diff --git a/.github/workflows/test_server.yml b/.github/workflows/test_server.yml
index 71bed5d0..9f3b9a6a 100644
--- a/.github/workflows/test_server.yml
+++ b/.github/workflows/test_server.yml
@@ -11,6 +11,11 @@ on:
 jobs:
   pytest:
     runs-on: ubuntu-latest
+    services:
+      redis:
+        image: redis:6
+        ports:
+          - 6379:6379
     steps:
     - uses: actions/checkout@v3
     - name: Install poetry
diff --git a/README.md b/README.md
index 22651cc6..cb75c76b 100644
--- a/README.md
+++ b/README.md
@@ -6,7 +6,7 @@ The project architecture consists of three primary components:
 
 * **Front-End**: NextJS React project hosted on Vercel, located in `www/`.
 * **Back-End**: Python server that offers an API and data persistence, found in `server/`.
-* **AI Models**: Providing services such as speech-to-text transcription, topic generation, automated summaries, and translations.
+* **GPU implementation**: Providing services such as speech-to-text transcription, topic generation, automated summaries, and translations.
 
 It also uses https://github.com/fief-dev for authentication, and Vercel for deployment and configuration of the front-end.
 
@@ -120,6 +120,9 @@ TRANSCRIPT_MODAL_API_KEY=<omitted>
 LLM_BACKEND=modal
 LLM_URL=https://monadical-sas--reflector-llm-web.modal.run
 LLM_MODAL_API_KEY=<omitted>
+TRANSLATE_URL=https://monadical-sas--reflector-translator-web.modal.run
+ZEPHYR_LLM_URL=https://monadical-sas--reflector-llm-zephyr-web.modal.run
+DIARIZATION_URL=https://monadical-sas--reflector-diarizer-web.modal.run
 
 AUTH_BACKEND=fief
 AUTH_FIEF_URL=https://auth.reflector.media/reflector-local
@@ -138,6 +141,10 @@ Use:
 poetry run python3 -m reflector.app
 ```
 
+And start the background worker
+
+celery -A reflector.worker.app worker --loglevel=info
+
 #### Using docker
 
 Use:
@@ -161,4 +168,5 @@ poetry run python -m reflector.tools.process path/to/audio.wav
 
 ## AI Models
 
-*(Documentation for this section is pending.)*
\ No newline at end of file
+*(Documentation for this section is pending.)*
+
diff --git a/docker-compose.yml b/docker-compose.yml
index 934baaac..9e6519af 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -5,10 +5,19 @@ services:
       context: server
     ports:
       - 1250:1250
-    environment:
-      LLM_URL: "${LLM_URL}"
     volumes:
       - model-cache:/root/.cache
+    environment: ENTRYPOINT=server
+  worker:
+    build:
+      context: server
+    volumes:
+      - model-cache:/root/.cache
+    environment: ENTRYPOINT=worker
+  redis:
+    image: redis:7.2
+    ports:
+      - 6379:6379
   web:
     build:
       context: www
@@ -17,4 +26,3 @@ services:
 
 volumes:
   model-cache:
-
diff --git a/server/docker-compose.yml b/server/docker-compose.yml
index 374130fa..c8432816 100644
--- a/server/docker-compose.yml
+++ b/server/docker-compose.yml
@@ -5,11 +5,23 @@ services:
       context: .
     ports:
       - 1250:1250
-    environment:
-      LLM_URL: "${LLM_URL}"
-      MIN_TRANSCRIPT_LENGTH: "${MIN_TRANSCRIPT_LENGTH}"
     volumes:
       - model-cache:/root/.cache
+    environment:
+      ENTRYPOINT: server
+      REDIS_HOST: redis
+  worker:
+    build:
+      context: .
+    volumes:
+      - model-cache:/root/.cache
+    environment:
+      ENTRYPOINT: worker
+      REDIS_HOST: redis
+  redis:
+    image: redis:7.2
+    ports:
+      - 6379:6379
 
 volumes:
   model-cache:
diff --git a/server/migrations/versions/38a927dcb099_rename_back_text_to_transcript.py b/server/migrations/versions/38a927dcb099_rename_back_text_to_transcript.py
new file mode 100644
index 00000000..dffe6fa1
--- /dev/null
+++ b/server/migrations/versions/38a927dcb099_rename_back_text_to_transcript.py
@@ -0,0 +1,80 @@
+"""rename back text to transcript
+
+Revision ID: 38a927dcb099
+Revises: 9920ecfe2735
+Create Date: 2023-11-02 19:53:09.116240
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.sql import table, column
+from sqlalchemy import select
+
+
+# revision identifiers, used by Alembic.
+revision: str = '38a927dcb099'
+down_revision: Union[str, None] = '9920ecfe2735'
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # bind the engine
+    bind = op.get_bind()
+
+    # Reflect the table
+    transcript = table("transcript", column("id", sa.String), column("topics", sa.JSON))
+
+    # Select all rows from the transcript table
+    results = bind.execute(select([transcript.c.id, transcript.c.topics]))
+
+    for row in results:
+        transcript_id = row["id"]
+        topics_json = row["topics"]
+
+        # Process each topic in the topics JSON array
+        updated_topics = []
+        for topic in topics_json:
+            if "text" in topic:
+                # Rename key 'text' back to 'transcript'
+                topic["transcript"] = topic.pop("text")
+            updated_topics.append(topic)
+
+        # Update the transcript table
+        bind.execute(
+            transcript.update()
+            .where(transcript.c.id == transcript_id)
+            .values(topics=updated_topics)
+        )
+
+
+def downgrade() -> None:
+    # bind the engine
+    bind = op.get_bind()
+
+    # Reflect the table
+    transcript = table("transcript", column("id", sa.String), column("topics", sa.JSON))
+
+    # Select all rows from the transcript table
+    results = bind.execute(select([transcript.c.id, transcript.c.topics]))
+
+    for row in results:
+        transcript_id = row["id"]
+        topics_json = row["topics"]
+
+        # Process each topic in the topics JSON array
+        updated_topics = []
+        for topic in topics_json:
+            if "transcript" in topic:
+                # Rename key 'transcript' to 'text'
+                topic["text"] = topic.pop("transcript")
+            updated_topics.append(topic)
+
+        # Update the transcript table
+        bind.execute(
+            transcript.update()
+            .where(transcript.c.id == transcript_id)
+            .values(topics=updated_topics)
+        )
diff --git a/server/migrations/versions/9920ecfe2735_rename_transcript_to_text.py b/server/migrations/versions/9920ecfe2735_rename_transcript_to_text.py
new file mode 100644
index 00000000..caecaefd
--- /dev/null
+++ b/server/migrations/versions/9920ecfe2735_rename_transcript_to_text.py
@@ -0,0 +1,80 @@
+"""Migration transcript to text field in transcripts table
+
+Revision ID: 9920ecfe2735
+Revises: 99365b0cd87b
+Create Date: 2023-11-02 18:55:17.019498
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+from sqlalchemy.sql import table, column
+from sqlalchemy import select
+
+
+# revision identifiers, used by Alembic.
+revision: str = "9920ecfe2735"
+down_revision: Union[str, None] = "99365b0cd87b"
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    # bind the engine
+    bind = op.get_bind()
+
+    # Reflect the table
+    transcript = table("transcript", column("id", sa.String), column("topics", sa.JSON))
+
+    # Select all rows from the transcript table
+    results = bind.execute(select([transcript.c.id, transcript.c.topics]))
+
+    for row in results:
+        transcript_id = row["id"]
+        topics_json = row["topics"]
+
+        # Process each topic in the topics JSON array
+        updated_topics = []
+        for topic in topics_json:
+            if "transcript" in topic:
+                # Rename key 'transcript' to 'text'
+                topic["text"] = topic.pop("transcript")
+            updated_topics.append(topic)
+
+        # Update the transcript table
+        bind.execute(
+            transcript.update()
+            .where(transcript.c.id == transcript_id)
+            .values(topics=updated_topics)
+        )
+
+
+def downgrade() -> None:
+    # bind the engine
+    bind = op.get_bind()
+
+    # Reflect the table
+    transcript = table("transcript", column("id", sa.String), column("topics", sa.JSON))
+
+    # Select all rows from the transcript table
+    results = bind.execute(select([transcript.c.id, transcript.c.topics]))
+
+    for row in results:
+        transcript_id = row["id"]
+        topics_json = row["topics"]
+
+        # Process each topic in the topics JSON array
+        updated_topics = []
+        for topic in topics_json:
+            if "text" in topic:
+                # Rename key 'text' back to 'transcript'
+                topic["transcript"] = topic.pop("text")
+            updated_topics.append(topic)
+
+        # Update the transcript table
+        bind.execute(
+            transcript.update()
+            .where(transcript.c.id == transcript_id)
+            .values(topics=updated_topics)
+        )
diff --git a/server/poetry.lock b/server/poetry.lock
index 330c23e3..e72ade57 100644
--- a/server/poetry.lock
+++ b/server/poetry.lock
@@ -308,6 +308,20 @@ typing-extensions = ">=4"
 [package.extras]
 tz = ["python-dateutil"]
 
+[[package]]
+name = "amqp"
+version = "5.1.1"
+description = "Low-level AMQP client for Python (fork of amqplib)."
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "amqp-5.1.1-py3-none-any.whl", hash = "sha256:6f0956d2c23d8fa6e7691934d8c3930eadb44972cbbd1a7ae3a520f735d43359"},
+    {file = "amqp-5.1.1.tar.gz", hash = "sha256:2c1b13fecc0893e946c65cbd5f36427861cffa4ea2201d8f6fca22e2a373b5e2"},
+]
+
+[package.dependencies]
+vine = ">=5.0.0"
+
 [[package]]
 name = "annotated-types"
 version = "0.6.0"
@@ -474,6 +488,17 @@ files = [
     {file = "av-10.0.0.tar.gz", hash = "sha256:8afd3d5610e1086f3b2d8389d66672ea78624516912c93612de64dcaa4c67e05"},
 ]
 
+[[package]]
+name = "billiard"
+version = "4.1.0"
+description = "Python multiprocessing fork with improvements and bugfixes"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "billiard-4.1.0-py3-none-any.whl", hash = "sha256:0f50d6be051c6b2b75bfbc8bfd85af195c5739c281d3f5b86a5640c65563614a"},
+    {file = "billiard-4.1.0.tar.gz", hash = "sha256:1ad2eeae8e28053d729ba3373d34d9d6e210f6e4d8bf0a9c64f92bd053f1edf5"},
+]
+
 [[package]]
 name = "black"
 version = "23.9.1"
@@ -556,6 +581,61 @@ urllib3 = ">=1.25.4,<1.27"
 [package.extras]
 crt = ["awscrt (==0.16.26)"]
 
+[[package]]
+name = "celery"
+version = "5.3.4"
+description = "Distributed Task Queue."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "celery-5.3.4-py3-none-any.whl", hash = "sha256:1e6ed40af72695464ce98ca2c201ad0ef8fd192246f6c9eac8bba343b980ad34"},
+    {file = "celery-5.3.4.tar.gz", hash = "sha256:9023df6a8962da79eb30c0c84d5f4863d9793a466354cc931d7f72423996de28"},
+]
+
+[package.dependencies]
+billiard = ">=4.1.0,<5.0"
+click = ">=8.1.2,<9.0"
+click-didyoumean = ">=0.3.0"
+click-plugins = ">=1.1.1"
+click-repl = ">=0.2.0"
+kombu = ">=5.3.2,<6.0"
+python-dateutil = ">=2.8.2"
+tzdata = ">=2022.7"
+vine = ">=5.0.0,<6.0"
+
+[package.extras]
+arangodb = ["pyArango (>=2.0.2)"]
+auth = ["cryptography (==41.0.3)"]
+azureblockblob = ["azure-storage-blob (>=12.15.0)"]
+brotli = ["brotli (>=1.0.0)", "brotlipy (>=0.7.0)"]
+cassandra = ["cassandra-driver (>=3.25.0,<4)"]
+consul = ["python-consul2 (==0.1.5)"]
+cosmosdbsql = ["pydocumentdb (==2.3.5)"]
+couchbase = ["couchbase (>=3.0.0)"]
+couchdb = ["pycouchdb (==1.14.2)"]
+django = ["Django (>=2.2.28)"]
+dynamodb = ["boto3 (>=1.26.143)"]
+elasticsearch = ["elasticsearch (<8.0)"]
+eventlet = ["eventlet (>=0.32.0)"]
+gevent = ["gevent (>=1.5.0)"]
+librabbitmq = ["librabbitmq (>=2.0.0)"]
+memcache = ["pylibmc (==1.6.3)"]
+mongodb = ["pymongo[srv] (>=4.0.2)"]
+msgpack = ["msgpack (==1.0.5)"]
+pymemcache = ["python-memcached (==1.59)"]
+pyro = ["pyro4 (==4.82)"]
+pytest = ["pytest-celery (==0.0.0)"]
+redis = ["redis (>=4.5.2,!=4.5.5,<5.0.0)"]
+s3 = ["boto3 (>=1.26.143)"]
+slmq = ["softlayer-messaging (>=1.0.3)"]
+solar = ["ephem (==4.1.4)"]
+sqlalchemy = ["sqlalchemy (>=1.4.48,<2.1)"]
+sqs = ["boto3 (>=1.26.143)", "kombu[sqs] (>=5.3.0)", "pycurl (>=7.43.0.5)", "urllib3 (>=1.26.16)"]
+tblib = ["tblib (>=1.3.0)", "tblib (>=1.5.0)"]
+yaml = ["PyYAML (>=3.10)"]
+zookeeper = ["kazoo (>=1.3.1)"]
+zstd = ["zstandard (==0.21.0)"]
+
 [[package]]
 name = "certifi"
 version = "2023.7.22"
@@ -744,6 +824,55 @@ files = [
 [package.dependencies]
 colorama = {version = "*", markers = "platform_system == \"Windows\""}
 
+[[package]]
+name = "click-didyoumean"
+version = "0.3.0"
+description = "Enables git-like *did-you-mean* feature in click"
+optional = false
+python-versions = ">=3.6.2,<4.0.0"
+files = [
+    {file = "click-didyoumean-0.3.0.tar.gz", hash = "sha256:f184f0d851d96b6d29297354ed981b7dd71df7ff500d82fa6d11f0856bee8035"},
+    {file = "click_didyoumean-0.3.0-py3-none-any.whl", hash = "sha256:a0713dc7a1de3f06bc0df5a9567ad19ead2d3d5689b434768a6145bff77c0667"},
+]
+
+[package.dependencies]
+click = ">=7"
+
+[[package]]
+name = "click-plugins"
+version = "1.1.1"
+description = "An extension module for click to enable registering CLI commands via setuptools entry-points."
+optional = false
+python-versions = "*"
+files = [
+    {file = "click-plugins-1.1.1.tar.gz", hash = "sha256:46ab999744a9d831159c3411bb0c79346d94a444df9a3a3742e9ed63645f264b"},
+    {file = "click_plugins-1.1.1-py2.py3-none-any.whl", hash = "sha256:5d262006d3222f5057fd81e1623d4443e41dcda5dc815c06b442aa3c02889fc8"},
+]
+
+[package.dependencies]
+click = ">=4.0"
+
+[package.extras]
+dev = ["coveralls", "pytest (>=3.6)", "pytest-cov", "wheel"]
+
+[[package]]
+name = "click-repl"
+version = "0.3.0"
+description = "REPL plugin for Click"
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "click-repl-0.3.0.tar.gz", hash = "sha256:17849c23dba3d667247dc4defe1757fff98694e90fe37474f3feebb69ced26a9"},
+    {file = "click_repl-0.3.0-py3-none-any.whl", hash = "sha256:fb7e06deb8da8de86180a33a9da97ac316751c094c6899382da7feeeeb51b812"},
+]
+
+[package.dependencies]
+click = ">=7.0"
+prompt-toolkit = ">=3.0.36"
+
+[package.extras]
+testing = ["pytest (>=7.2.1)", "pytest-cov (>=4.0.0)", "tox (>=4.4.3)"]
+
 [[package]]
 name = "colorama"
 version = "0.4.6"
@@ -981,6 +1110,24 @@ idna = ["idna (>=2.1,<4.0)"]
 trio = ["trio (>=0.14,<0.23)"]
 wmi = ["wmi (>=1.5.1,<2.0.0)"]
 
+[[package]]
+name = "ecdsa"
+version = "0.18.0"
+description = "ECDSA cryptographic signature library (pure python)"
+optional = false
+python-versions = ">=2.6, !=3.0.*, !=3.1.*, !=3.2.*"
+files = [
+    {file = "ecdsa-0.18.0-py2.py3-none-any.whl", hash = "sha256:80600258e7ed2f16b9aa1d7c295bd70194109ad5a30fdee0eaeefef1d4c559dd"},
+    {file = "ecdsa-0.18.0.tar.gz", hash = "sha256:190348041559e21b22a1d65cee485282ca11a6f81d503fddb84d5017e9ed1e49"},
+]
+
+[package.dependencies]
+six = ">=1.9.0"
+
+[package.extras]
+gmpy = ["gmpy"]
+gmpy2 = ["gmpy2"]
+
 [[package]]
 name = "fastapi"
 version = "0.100.1"
@@ -1624,6 +1771,38 @@ files = [
 cryptography = ">=3.4"
 deprecated = "*"
 
+[[package]]
+name = "kombu"
+version = "5.3.2"
+description = "Messaging library for Python."
+optional = false
+python-versions = ">=3.8"
+files = [
+    {file = "kombu-5.3.2-py3-none-any.whl", hash = "sha256:b753c9cfc9b1e976e637a7cbc1a65d446a22e45546cd996ea28f932082b7dc9e"},
+    {file = "kombu-5.3.2.tar.gz", hash = "sha256:0ba213f630a2cb2772728aef56ac6883dc3a2f13435e10048f6e97d48506dbbd"},
+]
+
+[package.dependencies]
+amqp = ">=5.1.1,<6.0.0"
+vine = "*"
+
+[package.extras]
+azureservicebus = ["azure-servicebus (>=7.10.0)"]
+azurestoragequeues = ["azure-identity (>=1.12.0)", "azure-storage-queue (>=12.6.0)"]
+confluentkafka = ["confluent-kafka (==2.1.1)"]
+consul = ["python-consul2"]
+librabbitmq = ["librabbitmq (>=2.0.0)"]
+mongodb = ["pymongo (>=4.1.1)"]
+msgpack = ["msgpack"]
+pyro = ["pyro4"]
+qpid = ["qpid-python (>=0.26)", "qpid-tools (>=0.26)"]
+redis = ["redis (>=4.5.2)"]
+slmq = ["softlayer-messaging (>=1.0.3)"]
+sqlalchemy = ["sqlalchemy (>=1.4.48,<2.1)"]
+sqs = ["boto3 (>=1.26.143)", "pycurl (>=7.43.0.5)", "urllib3 (>=1.26.16)"]
+yaml = ["PyYAML (>=3.10)"]
+zookeeper = ["kazoo (>=2.8.0)"]
+
 [[package]]
 name = "levenshtein"
 version = "0.21.1"
@@ -2151,6 +2330,20 @@ files = [
 fastapi = ">=0.38.1,<1.0.0"
 prometheus-client = ">=0.8.0,<1.0.0"
 
+[[package]]
+name = "prompt-toolkit"
+version = "3.0.39"
+description = "Library for building powerful interactive command lines in Python"
+optional = false
+python-versions = ">=3.7.0"
+files = [
+    {file = "prompt_toolkit-3.0.39-py3-none-any.whl", hash = "sha256:9dffbe1d8acf91e3de75f3b544e4842382fc06c6babe903ac9acb74dc6e08d88"},
+    {file = "prompt_toolkit-3.0.39.tar.gz", hash = "sha256:04505ade687dc26dc4284b1ad19a83be2f2afe83e7a828ace0c72f3a1df72aac"},
+]
+
+[package.dependencies]
+wcwidth = "*"
+
 [[package]]
 name = "protobuf"
 version = "4.24.4"
@@ -2173,6 +2366,17 @@ files = [
     {file = "protobuf-4.24.4.tar.gz", hash = "sha256:5a70731910cd9104762161719c3d883c960151eea077134458503723b60e3667"},
 ]
 
+[[package]]
+name = "pyasn1"
+version = "0.5.0"
+description = "Pure-Python implementation of ASN.1 types and DER/BER/CER codecs (X.208)"
+optional = false
+python-versions = "!=3.0.*,!=3.1.*,!=3.2.*,!=3.3.*,!=3.4.*,!=3.5.*,>=2.7"
+files = [
+    {file = "pyasn1-0.5.0-py2.py3-none-any.whl", hash = "sha256:87a2121042a1ac9358cabcaf1d07680ff97ee6404333bacca15f76aa8ad01a57"},
+    {file = "pyasn1-0.5.0.tar.gz", hash = "sha256:97b7290ca68e62a832558ec3976f15cbf911bf5d7c7039d8b861c2a0ece69fde"},
+]
+
 [[package]]
 name = "pycparser"
 version = "2.21"
@@ -2501,6 +2705,20 @@ pytest = ">=7.0.0"
 docs = ["sphinx (>=5.3)", "sphinx-rtd-theme (>=1.0)"]
 testing = ["coverage (>=6.2)", "flaky (>=3.5.0)", "hypothesis (>=5.7.1)", "mypy (>=0.931)", "pytest-trio (>=0.7.0)"]
 
+[[package]]
+name = "pytest-celery"
+version = "0.0.0"
+description = "pytest-celery a shim pytest plugin to enable celery.contrib.pytest"
+optional = false
+python-versions = "*"
+files = [
+    {file = "pytest-celery-0.0.0.tar.gz", hash = "sha256:cfd060fc32676afa1e4f51b2938f903f7f75d952186b8c6cf631628c4088f406"},
+    {file = "pytest_celery-0.0.0-py2.py3-none-any.whl", hash = "sha256:63dec132df3a839226ecb003ffdbb0c2cb88dd328550957e979c942766578060"},
+]
+
+[package.dependencies]
+celery = ">=4.4.0"
+
 [[package]]
 name = "pytest-cov"
 version = "4.1.0"
@@ -2565,6 +2783,28 @@ files = [
 [package.extras]
 cli = ["click (>=5.0)"]
 
+[[package]]
+name = "python-jose"
+version = "3.3.0"
+description = "JOSE implementation in Python"
+optional = false
+python-versions = "*"
+files = [
+    {file = "python-jose-3.3.0.tar.gz", hash = "sha256:55779b5e6ad599c6336191246e95eb2293a9ddebd555f796a65f838f07e5d78a"},
+    {file = "python_jose-3.3.0-py2.py3-none-any.whl", hash = "sha256:9b1376b023f8b298536eedd47ae1089bcdb848f1535ab30555cd92002d78923a"},
+]
+
+[package.dependencies]
+cryptography = {version = ">=3.4.0", optional = true, markers = "extra == \"cryptography\""}
+ecdsa = "!=0.15"
+pyasn1 = "*"
+rsa = "*"
+
+[package.extras]
+cryptography = ["cryptography (>=3.4.0)"]
+pycrypto = ["pyasn1", "pycrypto (>=2.6.0,<2.7.0)"]
+pycryptodome = ["pyasn1", "pycryptodome (>=3.3.1,<4.0.0)"]
+
 [[package]]
 name = "pyyaml"
 version = "6.0.1"
@@ -2744,6 +2984,24 @@ files = [
 [package.extras]
 full = ["numpy"]
 
+[[package]]
+name = "redis"
+version = "5.0.1"
+description = "Python client for Redis database and key-value store"
+optional = false
+python-versions = ">=3.7"
+files = [
+    {file = "redis-5.0.1-py3-none-any.whl", hash = "sha256:ed4802971884ae19d640775ba3b03aa2e7bd5e8fb8dfaed2decce4d0fc48391f"},
+    {file = "redis-5.0.1.tar.gz", hash = "sha256:0dab495cd5753069d3bc650a0dde8a8f9edde16fc5691b689a566eda58100d0f"},
+]
+
+[package.dependencies]
+async-timeout = {version = ">=4.0.2", markers = "python_full_version <= \"3.11.2\""}
+
+[package.extras]
+hiredis = ["hiredis (>=1.0.0)"]
+ocsp = ["cryptography (>=36.0.1)", "pyopenssl (==20.0.1)", "requests (>=2.26.0)"]
+
 [[package]]
 name = "regex"
 version = "2023.10.3"
@@ -2862,6 +3120,20 @@ urllib3 = ">=1.21.1,<3"
 socks = ["PySocks (>=1.5.6,!=1.5.7)"]
 use-chardet-on-py3 = ["chardet (>=3.0.2,<6)"]
 
+[[package]]
+name = "rsa"
+version = "4.9"
+description = "Pure-Python RSA implementation"
+optional = false
+python-versions = ">=3.6,<4"
+files = [
+    {file = "rsa-4.9-py3-none-any.whl", hash = "sha256:90260d9058e514786967344d0ef75fa8727eed8a7d2e43ce9f4bcf1b536174f7"},
+    {file = "rsa-4.9.tar.gz", hash = "sha256:e38464a49c6c85d7f1351b0126661487a7e0a14a50f1675ec50eb34d4f20ef21"},
+]
+
+[package.dependencies]
+pyasn1 = ">=0.1.3"
+
 [[package]]
 name = "s3transfer"
 version = "0.6.2"
@@ -3438,6 +3710,17 @@ files = [
     {file = "typing_extensions-4.8.0.tar.gz", hash = "sha256:df8e4339e9cb77357558cbdbceca33c303714cf861d1eef15e1070055ae8b7ef"},
 ]
 
+[[package]]
+name = "tzdata"
+version = "2023.3"
+description = "Provider of IANA time zone data"
+optional = false
+python-versions = ">=2"
+files = [
+    {file = "tzdata-2023.3-py2.py3-none-any.whl", hash = "sha256:7e65763eef3120314099b6939b5546db7adce1e7d6f2e179e3df563c70511eda"},
+    {file = "tzdata-2023.3.tar.gz", hash = "sha256:11ef1e08e54acb0d4f95bdb1be05da659673de4acbd21bf9c69e94cc5e907a3a"},
+]
+
 [[package]]
 name = "urllib3"
 version = "1.26.17"
@@ -3523,6 +3806,17 @@ dev = ["Cython (>=0.29.32,<0.30.0)", "Sphinx (>=4.1.2,<4.2.0)", "aiohttp", "flak
 docs = ["Sphinx (>=4.1.2,<4.2.0)", "sphinx-rtd-theme (>=0.5.2,<0.6.0)", "sphinxcontrib-asyncio (>=0.3.0,<0.4.0)"]
 test = ["Cython (>=0.29.32,<0.30.0)", "aiohttp", "flake8 (>=3.9.2,<3.10.0)", "mypy (>=0.800)", "psutil", "pyOpenSSL (>=22.0.0,<22.1.0)", "pycodestyle (>=2.7.0,<2.8.0)"]
 
+[[package]]
+name = "vine"
+version = "5.0.0"
+description = "Promises, promises, promises."
+optional = false
+python-versions = ">=3.6"
+files = [
+    {file = "vine-5.0.0-py2.py3-none-any.whl", hash = "sha256:4c9dceab6f76ed92105027c49c823800dd33cacce13bdedc5b914e3514b7fb30"},
+    {file = "vine-5.0.0.tar.gz", hash = "sha256:7d3b1624a953da82ef63462013bbd271d3eb75751489f9807598e8f340bd637e"},
+]
+
 [[package]]
 name = "watchfiles"
 version = "0.20.0"
@@ -3557,6 +3851,17 @@ files = [
 [package.dependencies]
 anyio = ">=3.0.0"
 
+[[package]]
+name = "wcwidth"
+version = "0.2.8"
+description = "Measures the displayed width of unicode strings in a terminal"
+optional = false
+python-versions = "*"
+files = [
+    {file = "wcwidth-0.2.8-py2.py3-none-any.whl", hash = "sha256:77f719e01648ed600dfa5402c347481c0992263b81a027344f3e1ba25493a704"},
+    {file = "wcwidth-0.2.8.tar.gz", hash = "sha256:8705c569999ffbb4f6a87c6d1b80f324bd6db952f5eb0b95bc07517f4c1813d4"},
+]
+
 [[package]]
 name = "websockets"
 version = "11.0.3"
@@ -3838,4 +4143,4 @@ multidict = ">=4.0"
 [metadata]
 lock-version = "2.0"
 python-versions = "^3.11"
-content-hash = "61578467a70980ff9c2dc0cd787b6410b91d7c5fd2bb4c46b6951ec82690ef67"
+content-hash = "cfefbd402bde7585caa42c1a889be0496d956e285bb05db9e1e7ae5e485e91fe"
diff --git a/server/pyproject.toml b/server/pyproject.toml
index e3b44774..7681af39 100644
--- a/server/pyproject.toml
+++ b/server/pyproject.toml
@@ -33,6 +33,9 @@ prometheus-fastapi-instrumentator = "^6.1.0"
 sentencepiece = "^0.1.99"
 protobuf = "^4.24.3"
 profanityfilter = "^2.0.6"
+celery = "^5.3.4"
+redis = "^5.0.1"
+python-jose = {extras = ["cryptography"], version = "^3.3.0"}
 
 
 [tool.poetry.group.dev.dependencies]
@@ -47,6 +50,7 @@ pytest-asyncio = "^0.21.1"
 pytest = "^7.4.0"
 httpx-ws = "^0.4.1"
 pytest-httpx = "^0.23.1"
+pytest-celery = "^0.0.0"
 
 
 [tool.poetry.group.aws.dependencies]
diff --git a/server/reflector/app.py b/server/reflector/app.py
index 758faf69..c2e3bf7e 100644
--- a/server/reflector/app.py
+++ b/server/reflector/app.py
@@ -64,6 +64,9 @@ app.include_router(transcripts_router, prefix="/v1")
 app.include_router(user_router, prefix="/v1")
 add_pagination(app)
 
+# prepare celery
+from reflector.worker import app as celery_app  # noqa
+
 
 # simpler openapi id
 def use_route_names_as_operation_ids(app: FastAPI) -> None:
diff --git a/server/reflector/db/__init__.py b/server/reflector/db/__init__.py
index b68dfe20..9871c633 100644
--- a/server/reflector/db/__init__.py
+++ b/server/reflector/db/__init__.py
@@ -1,32 +1,13 @@
 import databases
 import sqlalchemy
-
 from reflector.events import subscribers_shutdown, subscribers_startup
 from reflector.settings import settings
 
 database = databases.Database(settings.DATABASE_URL)
 metadata = sqlalchemy.MetaData()
 
-
-transcripts = sqlalchemy.Table(
-    "transcript",
-    metadata,
-    sqlalchemy.Column("id", sqlalchemy.String, primary_key=True),
-    sqlalchemy.Column("name", sqlalchemy.String),
-    sqlalchemy.Column("status", sqlalchemy.String),
-    sqlalchemy.Column("locked", sqlalchemy.Boolean),
-    sqlalchemy.Column("duration", sqlalchemy.Integer),
-    sqlalchemy.Column("created_at", sqlalchemy.DateTime),
-    sqlalchemy.Column("title", sqlalchemy.String, nullable=True),
-    sqlalchemy.Column("short_summary", sqlalchemy.String, nullable=True),
-    sqlalchemy.Column("long_summary", sqlalchemy.String, nullable=True),
-    sqlalchemy.Column("topics", sqlalchemy.JSON),
-    sqlalchemy.Column("events", sqlalchemy.JSON),
-    sqlalchemy.Column("source_language", sqlalchemy.String, nullable=True),
-    sqlalchemy.Column("target_language", sqlalchemy.String, nullable=True),
-    # with user attached, optional
-    sqlalchemy.Column("user_id", sqlalchemy.String),
-)
+# import models
+import reflector.db.transcripts  # noqa
 
 engine = sqlalchemy.create_engine(
     settings.DATABASE_URL, connect_args={"check_same_thread": False}
diff --git a/server/reflector/db/transcripts.py b/server/reflector/db/transcripts.py
new file mode 100644
index 00000000..6ac2e32a
--- /dev/null
+++ b/server/reflector/db/transcripts.py
@@ -0,0 +1,296 @@
+import json
+from contextlib import asynccontextmanager
+from datetime import datetime
+from pathlib import Path
+from typing import Any
+from uuid import uuid4
+
+import sqlalchemy
+from pydantic import BaseModel, Field
+from reflector.db import database, metadata
+from reflector.processors.types import Word as ProcessorWord
+from reflector.settings import settings
+from reflector.utils.audio_waveform import get_audio_waveform
+
+transcripts = sqlalchemy.Table(
+    "transcript",
+    metadata,
+    sqlalchemy.Column("id", sqlalchemy.String, primary_key=True),
+    sqlalchemy.Column("name", sqlalchemy.String),
+    sqlalchemy.Column("status", sqlalchemy.String),
+    sqlalchemy.Column("locked", sqlalchemy.Boolean),
+    sqlalchemy.Column("duration", sqlalchemy.Integer),
+    sqlalchemy.Column("created_at", sqlalchemy.DateTime),
+    sqlalchemy.Column("title", sqlalchemy.String, nullable=True),
+    sqlalchemy.Column("short_summary", sqlalchemy.String, nullable=True),
+    sqlalchemy.Column("long_summary", sqlalchemy.String, nullable=True),
+    sqlalchemy.Column("topics", sqlalchemy.JSON),
+    sqlalchemy.Column("events", sqlalchemy.JSON),
+    sqlalchemy.Column("source_language", sqlalchemy.String, nullable=True),
+    sqlalchemy.Column("target_language", sqlalchemy.String, nullable=True),
+    # with user attached, optional
+    sqlalchemy.Column("user_id", sqlalchemy.String),
+)
+
+
+def generate_uuid4():
+    return str(uuid4())
+
+
+def generate_transcript_name():
+    now = datetime.utcnow()
+    return f"Transcript {now.strftime('%Y-%m-%d %H:%M:%S')}"
+
+
+class AudioWaveform(BaseModel):
+    data: list[float]
+
+
+class TranscriptText(BaseModel):
+    text: str
+    translation: str | None
+
+
+class TranscriptSegmentTopic(BaseModel):
+    speaker: int
+    text: str
+    timestamp: float
+
+
+class TranscriptTopic(BaseModel):
+    id: str = Field(default_factory=generate_uuid4)
+    title: str
+    summary: str
+    timestamp: float
+    duration: float | None = 0
+    transcript: str | None = None
+    words: list[ProcessorWord] = []
+
+
+class TranscriptFinalShortSummary(BaseModel):
+    short_summary: str
+
+
+class TranscriptFinalLongSummary(BaseModel):
+    long_summary: str
+
+
+class TranscriptFinalTitle(BaseModel):
+    title: str
+
+
+class TranscriptEvent(BaseModel):
+    event: str
+    data: dict
+
+
+class Transcript(BaseModel):
+    id: str = Field(default_factory=generate_uuid4)
+    user_id: str | None = None
+    name: str = Field(default_factory=generate_transcript_name)
+    status: str = "idle"
+    locked: bool = False
+    duration: float = 0
+    created_at: datetime = Field(default_factory=datetime.utcnow)
+    title: str | None = None
+    short_summary: str | None = None
+    long_summary: str | None = None
+    topics: list[TranscriptTopic] = []
+    events: list[TranscriptEvent] = []
+    source_language: str = "en"
+    target_language: str = "en"
+
+    def add_event(self, event: str, data: BaseModel) -> TranscriptEvent:
+        ev = TranscriptEvent(event=event, data=data.model_dump())
+        self.events.append(ev)
+        return ev
+
+    def upsert_topic(self, topic: TranscriptTopic):
+        index = next((i for i, t in enumerate(self.topics) if t.id == topic.id), None)
+        if index is not None:
+            self.topics[index] = topic
+        else:
+            self.topics.append(topic)
+
+    def events_dump(self, mode="json"):
+        return [event.model_dump(mode=mode) for event in self.events]
+
+    def topics_dump(self, mode="json"):
+        return [topic.model_dump(mode=mode) for topic in self.topics]
+
+    def convert_audio_to_waveform(self, segments_count=256):
+        fn = self.audio_waveform_filename
+        if fn.exists():
+            return
+        waveform = get_audio_waveform(
+            path=self.audio_mp3_filename, segments_count=segments_count
+        )
+        try:
+            with open(fn, "w") as fd:
+                json.dump(waveform, fd)
+        except Exception:
+            # remove file if anything happen during the write
+            fn.unlink(missing_ok=True)
+            raise
+        return waveform
+
+    def unlink(self):
+        self.data_path.unlink(missing_ok=True)
+
+    @property
+    def data_path(self):
+        return Path(settings.DATA_DIR) / self.id
+
+    @property
+    def audio_mp3_filename(self):
+        return self.data_path / "audio.mp3"
+
+    @property
+    def audio_waveform_filename(self):
+        return self.data_path / "audio.json"
+
+    @property
+    def audio_waveform(self):
+        try:
+            with open(self.audio_waveform_filename) as fd:
+                data = json.load(fd)
+        except json.JSONDecodeError:
+            # unlink file if it's corrupted
+            self.audio_waveform_filename.unlink(missing_ok=True)
+            return None
+
+        return AudioWaveform(data=data)
+
+
+class TranscriptController:
+    async def get_all(
+        self,
+        user_id: str | None = None,
+        order_by: str | None = None,
+        filter_empty: bool | None = False,
+        filter_recording: bool | None = False,
+    ) -> list[Transcript]:
+        """
+        Get all transcripts
+
+        If `user_id` is specified, only return transcripts that belong to the user.
+        Otherwise, return all anonymous transcripts.
+
+        Parameters:
+        - `order_by`: field to order by, e.g. "-created_at"
+        - `filter_empty`: filter out empty transcripts
+        - `filter_recording`: filter out transcripts that are currently recording
+        """
+        query = transcripts.select().where(transcripts.c.user_id == user_id)
+
+        if order_by is not None:
+            field = getattr(transcripts.c, order_by[1:])
+            if order_by.startswith("-"):
+                field = field.desc()
+            query = query.order_by(field)
+
+        if filter_empty:
+            query = query.filter(transcripts.c.status != "idle")
+
+        if filter_recording:
+            query = query.filter(transcripts.c.status != "recording")
+
+        results = await database.fetch_all(query)
+        return results
+
+    async def get_by_id(self, transcript_id: str, **kwargs) -> Transcript | None:
+        """
+        Get a transcript by id
+        """
+        query = transcripts.select().where(transcripts.c.id == transcript_id)
+        if "user_id" in kwargs:
+            query = query.where(transcripts.c.user_id == kwargs["user_id"])
+        result = await database.fetch_one(query)
+        if not result:
+            return None
+        return Transcript(**result)
+
+    async def add(
+        self,
+        name: str,
+        source_language: str = "en",
+        target_language: str = "en",
+        user_id: str | None = None,
+    ):
+        """
+        Add a new transcript
+        """
+        transcript = Transcript(
+            name=name,
+            source_language=source_language,
+            target_language=target_language,
+            user_id=user_id,
+        )
+        query = transcripts.insert().values(**transcript.model_dump())
+        await database.execute(query)
+        return transcript
+
+    async def update(self, transcript: Transcript, values: dict):
+        """
+        Update a transcript fields with key/values in values
+        """
+        query = (
+            transcripts.update()
+            .where(transcripts.c.id == transcript.id)
+            .values(**values)
+        )
+        await database.execute(query)
+        for key, value in values.items():
+            setattr(transcript, key, value)
+
+    async def remove_by_id(
+        self,
+        transcript_id: str,
+        user_id: str | None = None,
+    ) -> None:
+        """
+        Remove a transcript by id
+        """
+        transcript = await self.get_by_id(transcript_id, user_id=user_id)
+        if not transcript:
+            return
+        if user_id is not None and transcript.user_id != user_id:
+            return
+        transcript.unlink()
+        query = transcripts.delete().where(transcripts.c.id == transcript_id)
+        await database.execute(query)
+
+    @asynccontextmanager
+    async def transaction(self):
+        """
+        A context manager for database transaction
+        """
+        async with database.transaction(isolation="serializable"):
+            yield
+
+    async def append_event(
+        self,
+        transcript: Transcript,
+        event: str,
+        data: Any,
+    ) -> TranscriptEvent:
+        """
+        Append an event to a transcript
+        """
+        resp = transcript.add_event(event=event, data=data)
+        await self.update(transcript, {"events": transcript.events_dump()})
+        return resp
+
+    async def upsert_topic(
+        self,
+        transcript: Transcript,
+        topic: TranscriptTopic,
+    ) -> TranscriptEvent:
+        """
+        Append an event to a transcript
+        """
+        transcript.upsert_topic(topic)
+        await self.update(transcript, {"topics": transcript.topics_dump()})
+
+
+transcripts_controller = TranscriptController()
diff --git a/server/reflector/llm/llm_modal.py b/server/reflector/llm/llm_modal.py
index 220730e5..4b81c5a0 100644
--- a/server/reflector/llm/llm_modal.py
+++ b/server/reflector/llm/llm_modal.py
@@ -47,6 +47,7 @@ class ModalLLM(LLM):
                 json=json_payload,
                 timeout=self.timeout,
                 retry_timeout=60 * 5,
+                follow_redirects=True,
             )
             response.raise_for_status()
             text = response.json()["text"]
diff --git a/server/reflector/pipelines/main_live_pipeline.py b/server/reflector/pipelines/main_live_pipeline.py
new file mode 100644
index 00000000..b2bc51ea
--- /dev/null
+++ b/server/reflector/pipelines/main_live_pipeline.py
@@ -0,0 +1,362 @@
+"""
+Main reflector pipeline for live streaming
+==========================================
+
+This is the default pipeline used in the API.
+
+It is decoupled to:
+- PipelineMainLive: have limited processing during live
+- PipelineMainPost: do heavy lifting after the live
+
+It is directly linked to our data model.
+"""
+
+import asyncio
+from contextlib import asynccontextmanager
+from datetime import timedelta
+from pathlib import Path
+
+from celery import shared_task
+from pydantic import BaseModel
+from reflector.app import app
+from reflector.db.transcripts import (
+    Transcript,
+    TranscriptFinalLongSummary,
+    TranscriptFinalShortSummary,
+    TranscriptFinalTitle,
+    TranscriptText,
+    TranscriptTopic,
+    transcripts_controller,
+)
+from reflector.logger import logger
+from reflector.pipelines.runner import PipelineRunner
+from reflector.processors import (
+    AudioChunkerProcessor,
+    AudioDiarizationAutoProcessor,
+    AudioFileWriterProcessor,
+    AudioMergeProcessor,
+    AudioTranscriptAutoProcessor,
+    BroadcastProcessor,
+    Pipeline,
+    TranscriptFinalLongSummaryProcessor,
+    TranscriptFinalShortSummaryProcessor,
+    TranscriptFinalTitleProcessor,
+    TranscriptLinerProcessor,
+    TranscriptTopicDetectorProcessor,
+    TranscriptTranslatorProcessor,
+)
+from reflector.processors.types import AudioDiarizationInput
+from reflector.processors.types import (
+    TitleSummaryWithId as TitleSummaryWithIdProcessorType,
+)
+from reflector.processors.types import Transcript as TranscriptProcessorType
+from reflector.settings import settings
+from reflector.ws_manager import WebsocketManager, get_ws_manager
+
+
+def broadcast_to_sockets(func):
+    """
+    Decorator to broadcast transcript event to websockets
+    concerning this transcript
+    """
+
+    async def wrapper(self, *args, **kwargs):
+        resp = await func(self, *args, **kwargs)
+        if resp is None:
+            return
+        await self.ws_manager.send_json(
+            room_id=self.ws_room_id,
+            message=resp.model_dump(mode="json"),
+        )
+
+    return wrapper
+
+
+class StrValue(BaseModel):
+    value: str
+
+
+class PipelineMainBase(PipelineRunner):
+    transcript_id: str
+    ws_room_id: str | None = None
+    ws_manager: WebsocketManager | None = None
+
+    def prepare(self):
+        # prepare websocket
+        self._lock = asyncio.Lock()
+        self.ws_room_id = f"ts:{self.transcript_id}"
+        self.ws_manager = get_ws_manager()
+
+    async def get_transcript(self) -> Transcript:
+        # fetch the transcript
+        result = await transcripts_controller.get_by_id(
+            transcript_id=self.transcript_id
+        )
+        if not result:
+            raise Exception("Transcript not found")
+        return result
+
+    @asynccontextmanager
+    async def transaction(self):
+        async with self._lock:
+            async with transcripts_controller.transaction():
+                yield
+
+    @broadcast_to_sockets
+    async def on_status(self, status):
+        # if it's the first part, update the status of the transcript
+        # but do not set the ended status yet.
+        if isinstance(self, PipelineMainLive):
+            status_mapping = {
+                "started": "recording",
+                "push": "recording",
+                "flush": "processing",
+                "error": "error",
+            }
+        elif isinstance(self, PipelineMainDiarization):
+            status_mapping = {
+                "push": "processing",
+                "flush": "processing",
+                "error": "error",
+                "ended": "ended",
+            }
+        else:
+            raise Exception(f"Runner {self.__class__} is missing status mapping")
+
+        # mutate to model status
+        status = status_mapping.get(status)
+        if not status:
+            return
+
+        # when the status of the pipeline changes, update the transcript
+        async with self.transaction():
+            transcript = await self.get_transcript()
+            if status == transcript.status:
+                return
+            resp = await transcripts_controller.append_event(
+                transcript=transcript,
+                event="STATUS",
+                data=StrValue(value=status),
+            )
+            await transcripts_controller.update(
+                transcript,
+                {
+                    "status": status,
+                },
+            )
+            return resp
+
+    @broadcast_to_sockets
+    async def on_transcript(self, data):
+        async with self.transaction():
+            transcript = await self.get_transcript()
+            return await transcripts_controller.append_event(
+                transcript=transcript,
+                event="TRANSCRIPT",
+                data=TranscriptText(text=data.text, translation=data.translation),
+            )
+
+    @broadcast_to_sockets
+    async def on_topic(self, data):
+        topic = TranscriptTopic(
+            title=data.title,
+            summary=data.summary,
+            timestamp=data.timestamp,
+            transcript=data.transcript.text,
+            words=data.transcript.words,
+        )
+        if isinstance(data, TitleSummaryWithIdProcessorType):
+            topic.id = data.id
+        async with self.transaction():
+            transcript = await self.get_transcript()
+            await transcripts_controller.upsert_topic(transcript, topic)
+            return await transcripts_controller.append_event(
+                transcript=transcript,
+                event="TOPIC",
+                data=topic,
+            )
+
+    @broadcast_to_sockets
+    async def on_title(self, data):
+        final_title = TranscriptFinalTitle(title=data.title)
+        async with self.transaction():
+            transcript = await self.get_transcript()
+            if not transcript.title:
+                await transcripts_controller.update(
+                    transcript,
+                    {
+                        "title": final_title.title,
+                    },
+                )
+            return await transcripts_controller.append_event(
+                transcript=transcript,
+                event="FINAL_TITLE",
+                data=final_title,
+            )
+
+    @broadcast_to_sockets
+    async def on_long_summary(self, data):
+        final_long_summary = TranscriptFinalLongSummary(long_summary=data.long_summary)
+        async with self.transaction():
+            transcript = await self.get_transcript()
+            await transcripts_controller.update(
+                transcript,
+                {
+                    "long_summary": final_long_summary.long_summary,
+                },
+            )
+            return await transcripts_controller.append_event(
+                transcript=transcript,
+                event="FINAL_LONG_SUMMARY",
+                data=final_long_summary,
+            )
+
+    @broadcast_to_sockets
+    async def on_short_summary(self, data):
+        final_short_summary = TranscriptFinalShortSummary(
+            short_summary=data.short_summary
+        )
+        async with self.transaction():
+            transcript = await self.get_transcript()
+            await transcripts_controller.update(
+                transcript,
+                {
+                    "short_summary": final_short_summary.short_summary,
+                },
+            )
+            return await transcripts_controller.append_event(
+                transcript=transcript,
+                event="FINAL_SHORT_SUMMARY",
+                data=final_short_summary,
+            )
+
+
+class PipelineMainLive(PipelineMainBase):
+    audio_filename: Path | None = None
+    source_language: str = "en"
+    target_language: str = "en"
+
+    async def create(self) -> Pipeline:
+        # create a context for the whole rtc transaction
+        # add a customised logger to the context
+        self.prepare()
+        transcript = await self.get_transcript()
+
+        processors = [
+            AudioFileWriterProcessor(path=transcript.audio_mp3_filename),
+            AudioChunkerProcessor(),
+            AudioMergeProcessor(),
+            AudioTranscriptAutoProcessor.as_threaded(),
+            TranscriptLinerProcessor(),
+            TranscriptTranslatorProcessor.as_threaded(callback=self.on_transcript),
+            TranscriptTopicDetectorProcessor.as_threaded(callback=self.on_topic),
+            BroadcastProcessor(
+                processors=[
+                    TranscriptFinalTitleProcessor.as_threaded(callback=self.on_title),
+                ]
+            ),
+        ]
+        pipeline = Pipeline(*processors)
+        pipeline.options = self
+        pipeline.set_pref("audio:source_language", transcript.source_language)
+        pipeline.set_pref("audio:target_language", transcript.target_language)
+        pipeline.logger.bind(transcript_id=transcript.id)
+        pipeline.logger.info(
+            "Pipeline main live created",
+            transcript_id=self.transcript_id,
+        )
+
+        return pipeline
+
+    async def on_ended(self):
+        # when the pipeline ends, connect to the post pipeline
+        logger.info("Pipeline main live ended", transcript_id=self.transcript_id)
+        logger.info("Scheduling pipeline main post", transcript_id=self.transcript_id)
+        task_pipeline_main_post.delay(transcript_id=self.transcript_id)
+
+
+class PipelineMainDiarization(PipelineMainBase):
+    """
+    Diarization is a long time process, so we do it in a separate pipeline
+    When done, adjust the short and final summary
+    """
+
+    async def create(self) -> Pipeline:
+        # create a context for the whole rtc transaction
+        # add a customised logger to the context
+        self.prepare()
+        processors = [
+            AudioDiarizationAutoProcessor(callback=self.on_topic),
+            BroadcastProcessor(
+                processors=[
+                    TranscriptFinalLongSummaryProcessor.as_threaded(
+                        callback=self.on_long_summary
+                    ),
+                    TranscriptFinalShortSummaryProcessor.as_threaded(
+                        callback=self.on_short_summary
+                    ),
+                ]
+            ),
+        ]
+        pipeline = Pipeline(*processors)
+        pipeline.options = self
+
+        # now let's start the pipeline by pushing information to the
+        # first processor diarization processor
+        # XXX translation is lost when converting our data model to the processor model
+        transcript = await self.get_transcript()
+        topics = [
+            TitleSummaryWithIdProcessorType(
+                id=topic.id,
+                title=topic.title,
+                summary=topic.summary,
+                timestamp=topic.timestamp,
+                duration=topic.duration,
+                transcript=TranscriptProcessorType(words=topic.words),
+            )
+            for topic in transcript.topics
+        ]
+
+        # we need to create an url to be used for diarization
+        # we can't use the audio_mp3_filename because it's not accessible
+        # from the diarization processor
+        from reflector.views.transcripts import create_access_token
+
+        path = app.url_path_for(
+            "transcript_get_audio_mp3",
+            transcript_id=transcript.id,
+        )
+        url = f"{settings.BASE_URL}{path}"
+        if transcript.user_id:
+            # we pass token only if the user_id is set
+            # otherwise, the audio is public
+            token = create_access_token(
+                {"sub": transcript.user_id},
+                expires_delta=timedelta(minutes=15),
+            )
+            url += f"?token={token}"
+        audio_diarization_input = AudioDiarizationInput(
+            audio_url=url,
+            topics=topics,
+        )
+
+        # as tempting to use pipeline.push, prefer to use the runner
+        # to let the start just do one job.
+        pipeline.logger.bind(transcript_id=transcript.id)
+        pipeline.logger.info(
+            "Pipeline main post created", transcript_id=self.transcript_id
+        )
+        self.push(audio_diarization_input)
+        self.flush()
+
+        return pipeline
+
+
+@shared_task
+def task_pipeline_main_post(transcript_id: str):
+    logger.info(
+        "Starting main post pipeline",
+        transcript_id=transcript_id,
+    )
+    runner = PipelineMainDiarization(transcript_id=transcript_id)
+    runner.start_sync()
diff --git a/server/reflector/pipelines/runner.py b/server/reflector/pipelines/runner.py
new file mode 100644
index 00000000..a1e137a7
--- /dev/null
+++ b/server/reflector/pipelines/runner.py
@@ -0,0 +1,137 @@
+"""
+Pipeline Runner
+===============
+
+Pipeline runner designed to be executed in a asyncio task.
+
+It is meant to be subclassed, and implement a create() method
+that expose/return a Pipeline instance.
+
+During its lifecycle, it will emit the following status:
+- started: the pipeline has been started
+- push: the pipeline received at least one data
+- flush: the pipeline is flushing
+- ended: the pipeline has ended
+- error: the pipeline has ended with an error
+"""
+
+import asyncio
+
+from pydantic import BaseModel, ConfigDict
+from reflector.logger import logger
+from reflector.processors import Pipeline
+
+
+class PipelineRunner(BaseModel):
+    model_config = ConfigDict(arbitrary_types_allowed=True)
+
+    status: str = "idle"
+    pipeline: Pipeline | None = None
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self._q_cmd = asyncio.Queue()
+        self._ev_done = asyncio.Event()
+        self._is_first_push = True
+        self._logger = logger.bind(
+            runner=id(self),
+            runner_cls=self.__class__.__name__,
+        )
+
+    def create(self) -> Pipeline:
+        """
+        Create the pipeline if not specified earlier.
+        Should be implemented in a subclass
+        """
+        raise NotImplementedError()
+
+    def start(self):
+        """
+        Start the pipeline as a coroutine task
+        """
+        asyncio.get_event_loop().create_task(self.run())
+
+    def start_sync(self):
+        """
+        Start the pipeline synchronously (for non-asyncio apps)
+        """
+        coro = self.run()
+        asyncio.run(coro)
+
+    def push(self, data):
+        """
+        Push data to the pipeline
+        """
+        self._add_cmd("PUSH", data)
+
+    def flush(self):
+        """
+        Flush the pipeline
+        """
+        self._add_cmd("FLUSH", None)
+
+    async def on_status(self, status):
+        """
+        Called when the status of the pipeline changes
+        """
+        pass
+
+    async def on_ended(self):
+        """
+        Called when the pipeline ends
+        """
+        pass
+
+    def _add_cmd(self, cmd: str, data):
+        """
+        Enqueue a command to be executed in the runner.
+        Currently supported commands: PUSH, FLUSH
+        """
+        self._q_cmd.put_nowait([cmd, data])
+
+    async def _set_status(self, status):
+        self._logger.debug("Runner status updated", status=status)
+        self.status = status
+        if self.on_status:
+            try:
+                await self.on_status(status)
+            except Exception:
+                self._logger.exception("Runer error while setting status")
+
+    async def run(self):
+        try:
+            # create the pipeline if not yet done
+            await self._set_status("init")
+            self._is_first_push = True
+            if not self.pipeline:
+                self.pipeline = await self.create()
+
+            # start the loop
+            await self._set_status("started")
+            while not self._ev_done.is_set():
+                cmd, data = await self._q_cmd.get()
+                func = getattr(self, f"cmd_{cmd.lower()}")
+                if func:
+                    await func(data)
+                else:
+                    raise Exception(f"Unknown command {cmd}")
+        except Exception:
+            self._logger.exception("Runner error")
+            await self._set_status("error")
+            self._ev_done.set()
+            if self.on_ended:
+                await self.on_ended()
+
+    async def cmd_push(self, data):
+        if self._is_first_push:
+            await self._set_status("push")
+            self._is_first_push = False
+        await self.pipeline.push(data)
+
+    async def cmd_flush(self, data):
+        await self._set_status("flush")
+        await self.pipeline.flush()
+        await self._set_status("ended")
+        self._ev_done.set()
+        if self.on_ended:
+            await self.on_ended()
diff --git a/server/reflector/processors/__init__.py b/server/reflector/processors/__init__.py
index 96a3941d..1c88d6c5 100644
--- a/server/reflector/processors/__init__.py
+++ b/server/reflector/processors/__init__.py
@@ -1,9 +1,16 @@
 from .audio_chunker import AudioChunkerProcessor  # noqa: F401
+from .audio_diarization_auto import AudioDiarizationAutoProcessor  # noqa: F401
 from .audio_file_writer import AudioFileWriterProcessor  # noqa: F401
 from .audio_merge import AudioMergeProcessor  # noqa: F401
 from .audio_transcript import AudioTranscriptProcessor  # noqa: F401
 from .audio_transcript_auto import AudioTranscriptAutoProcessor  # noqa: F401
-from .base import Pipeline, PipelineEvent, Processor, ThreadedProcessor  # noqa: F401
+from .base import (  # noqa: F401
+    BroadcastProcessor,
+    Pipeline,
+    PipelineEvent,
+    Processor,
+    ThreadedProcessor,
+)
 from .transcript_final_long_summary import (  # noqa: F401
     TranscriptFinalLongSummaryProcessor,
 )
diff --git a/server/reflector/processors/audio_diarization.py b/server/reflector/processors/audio_diarization.py
new file mode 100644
index 00000000..82c6a553
--- /dev/null
+++ b/server/reflector/processors/audio_diarization.py
@@ -0,0 +1,34 @@
+from reflector.processors.base import Processor
+from reflector.processors.types import AudioDiarizationInput, TitleSummary
+
+
+class AudioDiarizationProcessor(Processor):
+    INPUT_TYPE = AudioDiarizationInput
+    OUTPUT_TYPE = TitleSummary
+
+    async def _push(self, data: AudioDiarizationInput):
+        try:
+            self.logger.info("Diarization started", audio_file_url=data.audio_url)
+            diarization = await self._diarize(data)
+            self.logger.info("Diarization finished")
+        except Exception:
+            self.logger.exception("Diarization failed after retrying")
+            raise
+
+        # now reapply speaker to topics (if any)
+        # topics is a list[BaseModel] with an attribute words
+        # words is a list[BaseModel] with text, start and speaker attribute
+
+        # mutate in place
+        for topic in data.topics:
+            for word in topic.transcript.words:
+                for d in diarization:
+                    if d["start"] <= word.start <= d["end"]:
+                        word.speaker = d["speaker"]
+
+        # emit them
+        for topic in data.topics:
+            await self.emit(topic)
+
+    async def _diarize(self, data: AudioDiarizationInput):
+        raise NotImplementedError
diff --git a/server/reflector/processors/audio_diarization_auto.py b/server/reflector/processors/audio_diarization_auto.py
new file mode 100644
index 00000000..0e7bfc5c
--- /dev/null
+++ b/server/reflector/processors/audio_diarization_auto.py
@@ -0,0 +1,33 @@
+import importlib
+
+from reflector.processors.audio_diarization import AudioDiarizationProcessor
+from reflector.settings import settings
+
+
+class AudioDiarizationAutoProcessor(AudioDiarizationProcessor):
+    _registry = {}
+
+    @classmethod
+    def register(cls, name, kclass):
+        cls._registry[name] = kclass
+
+    def __new__(cls, name: str | None = None, **kwargs):
+        if name is None:
+            name = settings.DIARIZATION_BACKEND
+
+        if name not in cls._registry:
+            module_name = f"reflector.processors.audio_diarization_{name}"
+            importlib.import_module(module_name)
+
+        # gather specific configuration for the processor
+        # search `DIARIZATION_BACKEND_XXX_YYY`, push to constructor as `backend_xxx_yyy`
+        config = {}
+        name_upper = name.upper()
+        settings_prefix = "DIARIZATION_"
+        config_prefix = f"{settings_prefix}{name_upper}_"
+        for key, value in settings:
+            if key.startswith(config_prefix):
+                config_name = key[len(settings_prefix) :].lower()
+                config[config_name] = value
+
+        return cls._registry[name](**config | kwargs)
diff --git a/server/reflector/processors/audio_diarization_modal.py b/server/reflector/processors/audio_diarization_modal.py
new file mode 100644
index 00000000..53de2501
--- /dev/null
+++ b/server/reflector/processors/audio_diarization_modal.py
@@ -0,0 +1,37 @@
+import httpx
+from reflector.processors.audio_diarization import AudioDiarizationProcessor
+from reflector.processors.audio_diarization_auto import AudioDiarizationAutoProcessor
+from reflector.processors.types import AudioDiarizationInput, TitleSummary
+from reflector.settings import settings
+
+
+class AudioDiarizationModalProcessor(AudioDiarizationProcessor):
+    INPUT_TYPE = AudioDiarizationInput
+    OUTPUT_TYPE = TitleSummary
+
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.diarization_url = settings.DIARIZATION_URL + "/diarize"
+        self.headers = {
+            "Authorization": f"Bearer {settings.LLM_MODAL_API_KEY}",
+        }
+
+    async def _diarize(self, data: AudioDiarizationInput):
+        # Gather diarization data
+        params = {
+            "audio_file_url": data.audio_url,
+            "timestamp": 0,
+        }
+        async with httpx.AsyncClient() as client:
+            response = await client.post(
+                self.diarization_url,
+                headers=self.headers,
+                params=params,
+                timeout=None,
+                follow_redirects=True,
+            )
+            response.raise_for_status()
+            return response.json()["text"]
+
+
+AudioDiarizationAutoProcessor.register("modal", AudioDiarizationModalProcessor)
diff --git a/server/reflector/processors/audio_transcript.py b/server/reflector/processors/audio_transcript.py
index f029b587..3f9dc85b 100644
--- a/server/reflector/processors/audio_transcript.py
+++ b/server/reflector/processors/audio_transcript.py
@@ -1,6 +1,4 @@
-from profanityfilter import ProfanityFilter
 from prometheus_client import Counter, Histogram
-
 from reflector.processors.base import Processor
 from reflector.processors.types import AudioFile, Transcript
 
@@ -40,8 +38,6 @@ class AudioTranscriptProcessor(Processor):
         self.m_transcript_call = self.m_transcript_call.labels(name)
         self.m_transcript_success = self.m_transcript_success.labels(name)
         self.m_transcript_failure = self.m_transcript_failure.labels(name)
-        self.profanity_filter = ProfanityFilter()
-        self.profanity_filter.set_censor("*")
         super().__init__(*args, **kwargs)
 
     async def _push(self, data: AudioFile):
@@ -60,9 +56,3 @@ class AudioTranscriptProcessor(Processor):
 
     async def _transcript(self, data: AudioFile):
         raise NotImplementedError
-
-    def filter_profanity(self, text: str) -> str:
-        """
-        Remove censored words from the transcript
-        """
-        return self.profanity_filter.censor(text)
diff --git a/server/reflector/processors/audio_transcript_auto.py b/server/reflector/processors/audio_transcript_auto.py
index f223a52d..ac79ced0 100644
--- a/server/reflector/processors/audio_transcript_auto.py
+++ b/server/reflector/processors/audio_transcript_auto.py
@@ -1,8 +1,6 @@
 import importlib
 
 from reflector.processors.audio_transcript import AudioTranscriptProcessor
-from reflector.processors.base import Pipeline, Processor
-from reflector.processors.types import AudioFile
 from reflector.settings import settings
 
 
@@ -13,8 +11,9 @@ class AudioTranscriptAutoProcessor(AudioTranscriptProcessor):
     def register(cls, name, kclass):
         cls._registry[name] = kclass
 
-    @classmethod
-    def get_instance(cls, name):
+    def __new__(cls, name: str | None = None, **kwargs):
+        if name is None:
+            name = settings.TRANSCRIPT_BACKEND
         if name not in cls._registry:
             module_name = f"reflector.processors.audio_transcript_{name}"
             importlib.import_module(module_name)
@@ -30,30 +29,4 @@ class AudioTranscriptAutoProcessor(AudioTranscriptProcessor):
                 config_name = key[len(settings_prefix) :].lower()
                 config[config_name] = value
 
-        return cls._registry[name](**config)
-
-    def __init__(self, **kwargs):
-        self.processor = self.get_instance(settings.TRANSCRIPT_BACKEND)
-        super().__init__(**kwargs)
-
-    def set_pipeline(self, pipeline: Pipeline):
-        super().set_pipeline(pipeline)
-        self.processor.set_pipeline(pipeline)
-
-    def connect(self, processor: Processor):
-        self.processor.connect(processor)
-
-    def disconnect(self, processor: Processor):
-        self.processor.disconnect(processor)
-
-    def on(self, callback):
-        self.processor.on(callback)
-
-    def off(self, callback):
-        self.processor.off(callback)
-
-    async def _push(self, data: AudioFile):
-        return await self.processor._push(data)
-
-    async def _flush(self):
-        return await self.processor._flush()
+        return cls._registry[name](**config | kwargs)
diff --git a/server/reflector/processors/audio_transcript_modal.py b/server/reflector/processors/audio_transcript_modal.py
index 201ed9d4..0ca4710f 100644
--- a/server/reflector/processors/audio_transcript_modal.py
+++ b/server/reflector/processors/audio_transcript_modal.py
@@ -41,6 +41,7 @@ class AudioTranscriptModalProcessor(AudioTranscriptProcessor):
                 timeout=self.timeout,
                 headers=self.headers,
                 params=json_payload,
+                follow_redirects=True,
             )
 
             self.logger.debug(
@@ -48,10 +49,7 @@ class AudioTranscriptModalProcessor(AudioTranscriptProcessor):
             )
             response.raise_for_status()
             result = response.json()
-            text = result["text"][source_language]
-            text = self.filter_profanity(text)
             transcript = Transcript(
-                text=text,
                 words=[
                     Word(
                         text=word["text"],
diff --git a/server/reflector/processors/audio_transcript_whisper.py b/server/reflector/processors/audio_transcript_whisper.py
index e3bd595b..cd96e01a 100644
--- a/server/reflector/processors/audio_transcript_whisper.py
+++ b/server/reflector/processors/audio_transcript_whisper.py
@@ -30,7 +30,6 @@ class AudioTranscriptWhisperProcessor(AudioTranscriptProcessor):
         ts = data.timestamp
 
         for segment in segments:
-            transcript.text += segment.text
             for word in segment.words:
                 transcript.words.append(
                     Word(
diff --git a/server/reflector/processors/base.py b/server/reflector/processors/base.py
index 6771e11e..46bfb4a5 100644
--- a/server/reflector/processors/base.py
+++ b/server/reflector/processors/base.py
@@ -290,12 +290,12 @@ class BroadcastProcessor(Processor):
             processor.set_pipeline(pipeline)
 
     async def _push(self, data):
-        for processor in self.processors:
-            await processor.push(data)
+        coros = [processor.push(data) for processor in self.processors]
+        await asyncio.gather(*coros)
 
     async def _flush(self):
-        for processor in self.processors:
-            await processor.flush()
+        coros = [processor.flush() for processor in self.processors]
+        await asyncio.gather(*coros)
 
     def connect(self, processor: Processor):
         for processor in self.processors:
@@ -333,6 +333,7 @@ class Pipeline(Processor):
         self.logger.info("Pipeline created")
 
         self.processors = processors
+        self.options = None
         self.prefs = {}
 
         for processor in processors:
diff --git a/server/reflector/processors/transcript_liner.py b/server/reflector/processors/transcript_liner.py
index c1aa14a0..b4e7b5e3 100644
--- a/server/reflector/processors/transcript_liner.py
+++ b/server/reflector/processors/transcript_liner.py
@@ -36,7 +36,6 @@ class TranscriptLinerProcessor(Processor):
         # cut to the next .
         partial = Transcript(words=[])
         for word in self.transcript.words[:]:
-            partial.text += word.text
             partial.words.append(word)
             if not self.is_sentence_terminated(word.text):
                 continue
diff --git a/server/reflector/processors/transcript_translator.py b/server/reflector/processors/transcript_translator.py
index 77b8f5be..905ea423 100644
--- a/server/reflector/processors/transcript_translator.py
+++ b/server/reflector/processors/transcript_translator.py
@@ -50,6 +50,7 @@ class TranscriptTranslatorProcessor(Processor):
                 headers=self.headers,
                 params=json_payload,
                 timeout=self.timeout,
+                follow_redirects=True,
             )
             response.raise_for_status()
             result = response.json()["text"]
diff --git a/server/reflector/processors/types.py b/server/reflector/processors/types.py
index e867becf..312f5433 100644
--- a/server/reflector/processors/types.py
+++ b/server/reflector/processors/types.py
@@ -1,9 +1,16 @@
 import io
+import re
 import tempfile
 from pathlib import Path
 
+from profanityfilter import ProfanityFilter
 from pydantic import BaseModel, PrivateAttr
 
+PUNC_RE = re.compile(r"[.;:?!…]")
+
+profanity_filter = ProfanityFilter()
+profanity_filter.set_censor("*")
+
 
 class AudioFile(BaseModel):
     name: str
@@ -43,13 +50,29 @@ class Word(BaseModel):
     text: str
     start: float
     end: float
+    speaker: int = 0
+
+
+class TranscriptSegment(BaseModel):
+    text: str
+    start: float
+    speaker: int = 0
 
 
 class Transcript(BaseModel):
-    text: str = ""
     translation: str | None = None
     words: list[Word] = None
 
+    @property
+    def raw_text(self):
+        # Uncensored text
+        return "".join([word.text for word in self.words])
+
+    @property
+    def text(self):
+        # Censored text
+        return profanity_filter.censor(self.raw_text).strip()
+
     @property
     def human_timestamp(self):
         minutes = int(self.timestamp / 60)
@@ -74,7 +97,6 @@ class Transcript(BaseModel):
             self.words = other.words
         else:
             self.words.extend(other.words)
-        self.text += other.text
 
     def add_offset(self, offset: float):
         for word in self.words:
@@ -87,6 +109,48 @@ class Transcript(BaseModel):
         ]
         return Transcript(text=self.text, translation=self.translation, words=words)
 
+    def as_segments(self) -> list[TranscriptSegment]:
+        # from a list of word, create a list of segments
+        # join the word that are less than 2 seconds apart
+        # but separate if the speaker changes, or if the punctuation is a . , ; : ? !
+        segments = []
+        current_segment = None
+        MAX_SEGMENT_LENGTH = 120
+
+        for word in self.words:
+            if current_segment is None:
+                current_segment = TranscriptSegment(
+                    text=word.text,
+                    start=word.start,
+                    speaker=word.speaker,
+                )
+                continue
+
+            # If the word is attach to another speaker, push the current segment
+            # and start a new one
+            if word.speaker != current_segment.speaker:
+                segments.append(current_segment)
+                current_segment = TranscriptSegment(
+                    text=word.text,
+                    start=word.start,
+                    speaker=word.speaker,
+                )
+                continue
+
+            # if the word is the end of a sentence, and we have enough content,
+            # add the word to the current segment and push it
+            current_segment.text += word.text
+
+            have_punc = PUNC_RE.search(word.text)
+            if have_punc and (len(current_segment.text) > MAX_SEGMENT_LENGTH):
+                segments.append(current_segment)
+                current_segment = None
+
+        if current_segment:
+            segments.append(current_segment)
+
+        return segments
+
 
 class TitleSummary(BaseModel):
     title: str
@@ -103,6 +167,10 @@ class TitleSummary(BaseModel):
         return f"{minutes:02d}:{seconds:02d}.{milliseconds:03d}"
 
 
+class TitleSummaryWithId(TitleSummary):
+    id: str
+
+
 class FinalLongSummary(BaseModel):
     long_summary: str
     duration: float
@@ -318,3 +386,8 @@ class TranslationLanguages(BaseModel):
 
     def is_supported(self, lang_id: str) -> bool:
         return lang_id in self.supported_languages
+
+
+class AudioDiarizationInput(BaseModel):
+    audio_url: str
+    topics: list[TitleSummaryWithId]
diff --git a/server/reflector/settings.py b/server/reflector/settings.py
index e0ffd826..021d509f 100644
--- a/server/reflector/settings.py
+++ b/server/reflector/settings.py
@@ -89,6 +89,10 @@ class Settings(BaseSettings):
     # LLM Modal configuration
     LLM_MODAL_API_KEY: str | None = None
 
+    # Diarization
+    DIARIZATION_BACKEND: str = "modal"
+    DIARIZATION_URL: str | None = None
+
     # Sentry
     SENTRY_DSN: str | None = None
 
@@ -113,5 +117,19 @@ class Settings(BaseSettings):
     # Min transcript length to generate topic + summary
     MIN_TRANSCRIPT_LENGTH: int = 750
 
+    # Celery
+    CELERY_BROKER_URL: str = "redis://localhost:6379/1"
+    CELERY_RESULT_BACKEND: str = "redis://localhost:6379/1"
+
+    # Redis
+    REDIS_HOST: str = "localhost"
+    REDIS_PORT: int = 6379
+
+    # Secret key
+    SECRET_KEY: str = "changeme-f02f86fd8b3e4fd892c6043e5a298e21"
+
+    # Current hosting/domain
+    BASE_URL: str = "http://localhost:1250"
+
 
 settings = Settings()
diff --git a/server/reflector/tools/start_post_main_live_pipeline.py b/server/reflector/tools/start_post_main_live_pipeline.py
new file mode 100644
index 00000000..859f03a4
--- /dev/null
+++ b/server/reflector/tools/start_post_main_live_pipeline.py
@@ -0,0 +1,14 @@
+import argparse
+
+from reflector.app import celery_app  # noqa
+from reflector.pipelines.main_live_pipeline import task_pipeline_main_post
+
+parser = argparse.ArgumentParser()
+parser.add_argument("transcript_id", type=str)
+parser.add_argument("--delay", action="store_true")
+args = parser.parse_args()
+
+if args.delay:
+    task_pipeline_main_post.delay(args.transcript_id)
+else:
+    task_pipeline_main_post(args.transcript_id)
diff --git a/server/reflector/views/rtc_offer.py b/server/reflector/views/rtc_offer.py
index 5662d989..386ada9c 100644
--- a/server/reflector/views/rtc_offer.py
+++ b/server/reflector/views/rtc_offer.py
@@ -1,7 +1,5 @@
 import asyncio
-from enum import StrEnum
-from json import dumps, loads
-from pathlib import Path
+from json import loads
 
 import av
 from aiortc import MediaStreamTrack, RTCPeerConnection, RTCSessionDescription
@@ -10,25 +8,7 @@ from prometheus_client import Gauge
 from pydantic import BaseModel
 from reflector.events import subscribers_shutdown
 from reflector.logger import logger
-from reflector.processors import (
-    AudioChunkerProcessor,
-    AudioFileWriterProcessor,
-    AudioMergeProcessor,
-    AudioTranscriptAutoProcessor,
-    FinalLongSummary,
-    FinalShortSummary,
-    Pipeline,
-    TitleSummary,
-    Transcript,
-    TranscriptFinalLongSummaryProcessor,
-    TranscriptFinalShortSummaryProcessor,
-    TranscriptFinalTitleProcessor,
-    TranscriptLinerProcessor,
-    TranscriptTopicDetectorProcessor,
-    TranscriptTranslatorProcessor,
-)
-from reflector.processors.base import BroadcastProcessor
-from reflector.processors.types import FinalTitle
+from reflector.pipelines.runner import PipelineRunner
 
 sessions = []
 router = APIRouter()
@@ -38,7 +18,7 @@ m_rtc_sessions = Gauge("rtc_sessions", "Number of active RTC sessions")
 class TranscriptionContext(object):
     def __init__(self, logger):
         self.logger = logger
-        self.pipeline = None
+        self.pipeline_runner = None
         self.data_channel = None
         self.status = "idle"
         self.topics = []
@@ -60,7 +40,7 @@ class AudioStreamTrack(MediaStreamTrack):
         ctx = self.ctx
         frame = await self.track.recv()
         try:
-            await ctx.pipeline.push(frame)
+            ctx.pipeline_runner.push(frame)
         except Exception as e:
             ctx.logger.error("Pipeline error", error=e)
         return frame
@@ -71,27 +51,10 @@ class RtcOffer(BaseModel):
     type: str
 
 
-class StrValue(BaseModel):
-    value: str
-
-
-class PipelineEvent(StrEnum):
-    TRANSCRIPT = "TRANSCRIPT"
-    TOPIC = "TOPIC"
-    FINAL_LONG_SUMMARY = "FINAL_LONG_SUMMARY"
-    STATUS = "STATUS"
-    FINAL_SHORT_SUMMARY = "FINAL_SHORT_SUMMARY"
-    FINAL_TITLE = "FINAL_TITLE"
-
-
 async def rtc_offer_base(
     params: RtcOffer,
     request: Request,
-    event_callback=None,
-    event_callback_args=None,
-    audio_filename: Path | None = None,
-    source_language: str = "en",
-    target_language: str = "en",
+    pipeline_runner: PipelineRunner,
 ):
     # build an rtc session
     offer = RTCSessionDescription(sdp=params.sdp, type=params.type)
@@ -101,146 +64,10 @@ async def rtc_offer_base(
     clientid = f"{peername[0]}:{peername[1]}"
     ctx = TranscriptionContext(logger=logger.bind(client=clientid))
 
-    async def update_status(status: str):
-        changed = ctx.status != status
-        if changed:
-            ctx.status = status
-            if event_callback:
-                await event_callback(
-                    event=PipelineEvent.STATUS,
-                    args=event_callback_args,
-                    data=StrValue(value=status),
-                )
-
-    # build pipeline callback
-    async def on_transcript(transcript: Transcript):
-        ctx.logger.info("Transcript", transcript=transcript)
-
-        # send to RTC
-        if ctx.data_channel.readyState == "open":
-            result = {
-                "cmd": "SHOW_TRANSCRIPTION",
-                "text": transcript.text,
-            }
-            ctx.data_channel.send(dumps(result))
-
-        # send to callback (eg. websocket)
-        if event_callback:
-            await event_callback(
-                event=PipelineEvent.TRANSCRIPT,
-                args=event_callback_args,
-                data=transcript,
-            )
-
-    async def on_topic(topic: TitleSummary):
-        # FIXME: make it incremental with the frontend, not send everything
-        ctx.logger.info("Topic", topic=topic)
-        ctx.topics.append(
-            {
-                "title": topic.title,
-                "timestamp": topic.timestamp,
-                "transcript": topic.transcript.text,
-                "desc": topic.summary,
-            }
-        )
-
-        # send to RTC
-        if ctx.data_channel.readyState == "open":
-            result = {"cmd": "UPDATE_TOPICS", "topics": ctx.topics}
-            ctx.data_channel.send(dumps(result))
-
-        # send to callback (eg. websocket)
-        if event_callback:
-            await event_callback(
-                event=PipelineEvent.TOPIC, args=event_callback_args, data=topic
-            )
-
-    async def on_final_short_summary(summary: FinalShortSummary):
-        ctx.logger.info("FinalShortSummary", final_short_summary=summary)
-
-        # send to RTC
-        if ctx.data_channel.readyState == "open":
-            result = {
-                "cmd": "DISPLAY_FINAL_SHORT_SUMMARY",
-                "summary": summary.short_summary,
-                "duration": summary.duration,
-            }
-            ctx.data_channel.send(dumps(result))
-
-        # send to callback (eg. websocket)
-        if event_callback:
-            await event_callback(
-                event=PipelineEvent.FINAL_SHORT_SUMMARY,
-                args=event_callback_args,
-                data=summary,
-            )
-
-    async def on_final_long_summary(summary: FinalLongSummary):
-        ctx.logger.info("FinalLongSummary", final_summary=summary)
-
-        # send to RTC
-        if ctx.data_channel.readyState == "open":
-            result = {
-                "cmd": "DISPLAY_FINAL_LONG_SUMMARY",
-                "summary": summary.long_summary,
-                "duration": summary.duration,
-            }
-            ctx.data_channel.send(dumps(result))
-
-        # send to callback (eg. websocket)
-        if event_callback:
-            await event_callback(
-                event=PipelineEvent.FINAL_LONG_SUMMARY,
-                args=event_callback_args,
-                data=summary,
-            )
-
-    async def on_final_title(title: FinalTitle):
-        ctx.logger.info("FinalTitle", final_title=title)
-
-        # send to RTC
-        if ctx.data_channel.readyState == "open":
-            result = {"cmd": "DISPLAY_FINAL_TITLE", "title": title.title}
-            ctx.data_channel.send(dumps(result))
-
-        # send to callback (eg. websocket)
-        if event_callback:
-            await event_callback(
-                event=PipelineEvent.FINAL_TITLE,
-                args=event_callback_args,
-                data=title,
-            )
-
-    # create a context for the whole rtc transaction
-    # add a customised logger to the context
-    processors = []
-    if audio_filename is not None:
-        processors += [AudioFileWriterProcessor(path=audio_filename)]
-    processors += [
-        AudioChunkerProcessor(),
-        AudioMergeProcessor(),
-        AudioTranscriptAutoProcessor.as_threaded(),
-        TranscriptLinerProcessor(),
-        TranscriptTranslatorProcessor.as_threaded(callback=on_transcript),
-        TranscriptTopicDetectorProcessor.as_threaded(callback=on_topic),
-        BroadcastProcessor(
-            processors=[
-                TranscriptFinalTitleProcessor.as_threaded(callback=on_final_title),
-                TranscriptFinalLongSummaryProcessor.as_threaded(
-                    callback=on_final_long_summary
-                ),
-                TranscriptFinalShortSummaryProcessor.as_threaded(
-                    callback=on_final_short_summary
-                ),
-            ]
-        ),
-    ]
-    ctx.pipeline = Pipeline(*processors)
-    ctx.pipeline.set_pref("audio:source_language", source_language)
-    ctx.pipeline.set_pref("audio:target_language", target_language)
-
     # handle RTC peer connection
     pc = RTCPeerConnection()
+    ctx.pipeline_runner = pipeline_runner
+    ctx.pipeline_runner.start()
 
     async def flush_pipeline_and_quit(close=True):
         # may be called twice
@@ -249,12 +76,10 @@ async def rtc_offer_base(
         #    - when we receive the close event, we do nothing.
         # 2. or the client close the connection
         #    and there is nothing to do because it is already closed
-        await update_status("processing")
-        await ctx.pipeline.flush()
+        ctx.pipeline_runner.flush()
         if close:
             ctx.logger.debug("Closing peer connection")
             await pc.close()
-            await update_status("ended")
             if pc in sessions:
                 sessions.remove(pc)
                 m_rtc_sessions.dec()
@@ -287,7 +112,6 @@ async def rtc_offer_base(
     def on_track(track):
         ctx.logger.info(f"Track {track.kind} received")
         pc.addTrack(AudioStreamTrack(ctx, track))
-        asyncio.get_event_loop().create_task(update_status("recording"))
 
     await pc.setRemoteDescription(offer)
 
@@ -308,8 +132,3 @@ async def rtc_clean_sessions(_):
         logger.debug(f"Closing session {pc}")
         await pc.close()
     sessions.clear()
-
-
-@router.post("/offer")
-async def rtc_offer(params: RtcOffer, request: Request):
-    return await rtc_offer_base(params, request)
diff --git a/server/reflector/views/transcripts.py b/server/reflector/views/transcripts.py
index a7e01b8c..e3668ecb 100644
--- a/server/reflector/views/transcripts.py
+++ b/server/reflector/views/transcripts.py
@@ -1,8 +1,5 @@
-import json
-from datetime import datetime
-from pathlib import Path
+from datetime import datetime, timedelta
 from typing import Annotated, Optional
-from uuid import uuid4
 
 import reflector.auth as auth
 from fastapi import (
@@ -12,221 +9,36 @@ from fastapi import (
     Request,
     WebSocket,
     WebSocketDisconnect,
+    status,
 )
 from fastapi_pagination import Page, paginate
+from jose import jwt
 from pydantic import BaseModel, Field
-from reflector.db import database, transcripts
-from reflector.logger import logger
+from reflector.db.transcripts import (
+    AudioWaveform,
+    TranscriptTopic,
+    transcripts_controller,
+)
+from reflector.processors.types import Transcript as ProcessorTranscript
 from reflector.settings import settings
-from reflector.utils.audio_waveform import get_audio_waveform
+from reflector.ws_manager import get_ws_manager
 from starlette.concurrency import run_in_threadpool
 
 from ._range_requests_response import range_requests_response
-from .rtc_offer import PipelineEvent, RtcOffer, rtc_offer_base
+from .rtc_offer import RtcOffer, rtc_offer_base
 
 router = APIRouter()
 
-# ==============================================================
-# Models to move to a database, but required for the API to work
-# ==============================================================
+ALGORITHM = "HS256"
+DOWNLOAD_EXPIRE_MINUTES = 60
 
 
-def generate_uuid4():
-    return str(uuid4())
-
-
-def generate_transcript_name():
-    now = datetime.utcnow()
-    return f"Transcript {now.strftime('%Y-%m-%d %H:%M:%S')}"
-
-
-class AudioWaveform(BaseModel):
-    data: list[float]
-
-
-class TranscriptText(BaseModel):
-    text: str
-    translation: str | None
-
-
-class TranscriptTopic(BaseModel):
-    id: str = Field(default_factory=generate_uuid4)
-    title: str
-    summary: str
-    transcript: str | None = None
-    timestamp: float
-
-
-class TranscriptFinalShortSummary(BaseModel):
-    short_summary: str
-
-
-class TranscriptFinalLongSummary(BaseModel):
-    long_summary: str
-
-
-class TranscriptFinalTitle(BaseModel):
-    title: str
-
-
-class TranscriptEvent(BaseModel):
-    event: str
-    data: dict
-
-
-class Transcript(BaseModel):
-    id: str = Field(default_factory=generate_uuid4)
-    user_id: str | None = None
-    name: str = Field(default_factory=generate_transcript_name)
-    status: str = "idle"
-    locked: bool = False
-    duration: float = 0
-    created_at: datetime = Field(default_factory=datetime.utcnow)
-    title: str | None = None
-    short_summary: str | None = None
-    long_summary: str | None = None
-    topics: list[TranscriptTopic] = []
-    events: list[TranscriptEvent] = []
-    source_language: str = "en"
-    target_language: str = "en"
-
-    def add_event(self, event: str, data: BaseModel) -> TranscriptEvent:
-        ev = TranscriptEvent(event=event, data=data.model_dump())
-        self.events.append(ev)
-        return ev
-
-    def upsert_topic(self, topic: TranscriptTopic):
-        existing_topic = next((t for t in self.topics if t.id == topic.id), None)
-        if existing_topic:
-            existing_topic.update_from(topic)
-        else:
-            self.topics.append(topic)
-
-    def events_dump(self, mode="json"):
-        return [event.model_dump(mode=mode) for event in self.events]
-
-    def topics_dump(self, mode="json"):
-        return [topic.model_dump(mode=mode) for topic in self.topics]
-
-    def convert_audio_to_waveform(self, segments_count=256):
-        fn = self.audio_waveform_filename
-        if fn.exists():
-            return
-        waveform = get_audio_waveform(
-            path=self.audio_mp3_filename, segments_count=segments_count
-        )
-        try:
-            with open(fn, "w") as fd:
-                json.dump(waveform, fd)
-        except Exception:
-            # remove file if anything happen during the write
-            fn.unlink(missing_ok=True)
-            raise
-        return waveform
-
-    def unlink(self):
-        self.data_path.unlink(missing_ok=True)
-
-    @property
-    def data_path(self):
-        return Path(settings.DATA_DIR) / self.id
-
-    @property
-    def audio_mp3_filename(self):
-        return self.data_path / "audio.mp3"
-
-    @property
-    def audio_waveform_filename(self):
-        return self.data_path / "audio.json"
-
-    @property
-    def audio_waveform(self):
-        try:
-            with open(self.audio_waveform_filename) as fd:
-                data = json.load(fd)
-        except json.JSONDecodeError:
-            # unlink file if it's corrupted
-            self.audio_waveform_filename.unlink(missing_ok=True)
-            return None
-
-        return AudioWaveform(data=data)
-
-
-class TranscriptController:
-    async def get_all(
-        self,
-        user_id: str | None = None,
-        order_by: str | None = None,
-        filter_empty: bool | None = False,
-        filter_recording: bool | None = False,
-    ) -> list[Transcript]:
-        query = transcripts.select().where(transcripts.c.user_id == user_id)
-
-        if order_by is not None:
-            field = getattr(transcripts.c, order_by[1:])
-            if order_by.startswith("-"):
-                field = field.desc()
-            query = query.order_by(field)
-
-        if filter_empty:
-            query = query.filter(transcripts.c.status != "idle")
-
-        if filter_recording:
-            query = query.filter(transcripts.c.status != "recording")
-
-        results = await database.fetch_all(query)
-        return results
-
-    async def get_by_id(self, transcript_id: str, **kwargs) -> Transcript | None:
-        query = transcripts.select().where(transcripts.c.id == transcript_id)
-        if "user_id" in kwargs:
-            query = query.where(transcripts.c.user_id == kwargs["user_id"])
-        result = await database.fetch_one(query)
-        if not result:
-            return None
-        return Transcript(**result)
-
-    async def add(
-        self,
-        name: str,
-        source_language: str = "en",
-        target_language: str = "en",
-        user_id: str | None = None,
-    ):
-        transcript = Transcript(
-            name=name,
-            source_language=source_language,
-            target_language=target_language,
-            user_id=user_id,
-        )
-        query = transcripts.insert().values(**transcript.model_dump())
-        await database.execute(query)
-        return transcript
-
-    async def update(self, transcript: Transcript, values: dict):
-        query = (
-            transcripts.update()
-            .where(transcripts.c.id == transcript.id)
-            .values(**values)
-        )
-        await database.execute(query)
-        for key, value in values.items():
-            setattr(transcript, key, value)
-
-    async def remove_by_id(
-        self, transcript_id: str, user_id: str | None = None
-    ) -> None:
-        transcript = await self.get_by_id(transcript_id, user_id=user_id)
-        if not transcript:
-            return
-        if user_id is not None and transcript.user_id != user_id:
-            return
-        transcript.unlink()
-        query = transcripts.delete().where(transcripts.c.id == transcript_id)
-        await database.execute(query)
-
-
-transcripts_controller = TranscriptController()
+def create_access_token(data: dict, expires_delta: timedelta):
+    to_encode = data.copy()
+    expire = datetime.utcnow() + expires_delta
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, settings.SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
 
 
 # ==============================================================
@@ -298,6 +110,55 @@ async def transcripts_create(
 # ==============================================================
 
 
+class GetTranscriptSegmentTopic(BaseModel):
+    text: str
+    start: float
+    speaker: int
+
+
+class GetTranscriptTopic(BaseModel):
+    id: str
+    title: str
+    summary: str
+    timestamp: float
+    transcript: str
+    segments: list[GetTranscriptSegmentTopic] = []
+
+    @classmethod
+    def from_transcript_topic(cls, topic: TranscriptTopic):
+        if not topic.words:
+            # In previous version, words were missing
+            # Just output a segment with speaker 0
+            text = topic.transcript
+            segments = [
+                GetTranscriptSegmentTopic(
+                    text=topic.transcript,
+                    start=topic.timestamp,
+                    speaker=0,
+                )
+            ]
+        else:
+            # New versions include words
+            transcript = ProcessorTranscript(words=topic.words)
+            text = transcript.text
+            segments = [
+                GetTranscriptSegmentTopic(
+                    text=segment.text,
+                    start=segment.start,
+                    speaker=segment.speaker,
+                )
+                for segment in transcript.as_segments()
+            ]
+        return cls(
+            id=topic.id,
+            title=topic.title,
+            summary=topic.summary,
+            timestamp=topic.timestamp,
+            transcript=text,
+            segments=segments,
+        )
+
+
 @router.get("/transcripts/{transcript_id}", response_model=GetTranscript)
 async def transcript_get(
     transcript_id: str,
@@ -320,32 +181,17 @@ async def transcript_update(
     transcript = await transcripts_controller.get_by_id(transcript_id, user_id=user_id)
     if not transcript:
         raise HTTPException(status_code=404, detail="Transcript not found")
-    values = {"events": []}
+    values = {}
     if info.name is not None:
         values["name"] = info.name
     if info.locked is not None:
         values["locked"] = info.locked
     if info.long_summary is not None:
         values["long_summary"] = info.long_summary
-        for transcript_event in transcript.events:
-            if transcript_event["event"] == PipelineEvent.FINAL_LONG_SUMMARY:
-                transcript_event["long_summary"] = info.long_summary
-                break
-        values["events"].extend(transcript.events)
     if info.short_summary is not None:
         values["short_summary"] = info.short_summary
-        for transcript_event in transcript.events:
-            if transcript_event["event"] == PipelineEvent.FINAL_SHORT_SUMMARY:
-                transcript_event["short_summary"] = info.short_summary
-                break
-        values["events"].extend(transcript.events)
     if info.title is not None:
         values["title"] = info.title
-        for transcript_event in transcript.events:
-            if transcript_event["event"] == PipelineEvent.FINAL_TITLE:
-                transcript_event["title"] = info.title
-                break
-        values["events"].extend(transcript.events)
     await transcripts_controller.update(transcript, values)
     return transcript
 
@@ -368,8 +214,21 @@ async def transcript_get_audio_mp3(
     request: Request,
     transcript_id: str,
     user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
+    token: str | None = None,
 ):
     user_id = user["sub"] if user else None
+    if not user_id and token:
+        unauthorized_exception = HTTPException(
+            status_code=status.HTTP_401_UNAUTHORIZED,
+            detail="Invalid or expired token",
+            headers={"WWW-Authenticate": "Bearer"},
+        )
+        try:
+            payload = jwt.decode(token, settings.SECRET_KEY, algorithms=[ALGORITHM])
+            user_id: str = payload.get("sub")
+        except jwt.JWTError:
+            raise unauthorized_exception
+
     transcript = await transcripts_controller.get_by_id(transcript_id, user_id=user_id)
     if not transcript:
         raise HTTPException(status_code=404, detail="Transcript not found")
@@ -406,7 +265,10 @@ async def transcript_get_audio_waveform(
     return transcript.audio_waveform
 
 
-@router.get("/transcripts/{transcript_id}/topics", response_model=list[TranscriptTopic])
+@router.get(
+    "/transcripts/{transcript_id}/topics",
+    response_model=list[GetTranscriptTopic],
+)
 async def transcript_get_topics(
     transcript_id: str,
     user: Annotated[Optional[auth.UserInfo], Depends(auth.current_user_optional)],
@@ -415,7 +277,16 @@ async def transcript_get_topics(
     transcript = await transcripts_controller.get_by_id(transcript_id, user_id=user_id)
     if not transcript:
         raise HTTPException(status_code=404, detail="Transcript not found")
-    return transcript.topics
+
+    # convert to GetTranscriptTopic
+    return [
+        GetTranscriptTopic.from_transcript_topic(topic) for topic in transcript.topics
+    ]
+
+
+# ==============================================================
+# Websocket
+# ==============================================================
 
 
 @router.get("/transcripts/{transcript_id}/events")
@@ -423,41 +294,6 @@ async def transcript_get_websocket_events(transcript_id: str):
     pass
 
 
-# ==============================================================
-# Websocket Manager
-# ==============================================================
-
-
-class WebsocketManager:
-    def __init__(self):
-        self.active_connections = {}
-
-    async def connect(self, transcript_id: str, websocket: WebSocket):
-        await websocket.accept()
-        if transcript_id not in self.active_connections:
-            self.active_connections[transcript_id] = []
-        self.active_connections[transcript_id].append(websocket)
-
-    def disconnect(self, transcript_id: str, websocket: WebSocket):
-        if transcript_id not in self.active_connections:
-            return
-        self.active_connections[transcript_id].remove(websocket)
-        if not self.active_connections[transcript_id]:
-            del self.active_connections[transcript_id]
-
-    async def send_json(self, transcript_id: str, message):
-        if transcript_id not in self.active_connections:
-            return
-        for connection in self.active_connections[transcript_id][:]:
-            try:
-                await connection.send_json(message)
-            except Exception:
-                self.active_connections[transcript_id].remove(connection)
-
-
-ws_manager = WebsocketManager()
-
-
 @router.websocket("/transcripts/{transcript_id}/events")
 async def transcript_events_websocket(
     transcript_id: str,
@@ -469,21 +305,31 @@ async def transcript_events_websocket(
     if not transcript:
         raise HTTPException(status_code=404, detail="Transcript not found")
 
-    await ws_manager.connect(transcript_id, websocket)
+    # connect to websocket manager
+    # use ts:transcript_id as room id
+    room_id = f"ts:{transcript_id}"
+    ws_manager = get_ws_manager()
+    await ws_manager.add_user_to_room(room_id, websocket)
 
-    # on first connection, send all events
-    for event in transcript.events:
-        await websocket.send_json(event.model_dump(mode="json"))
-
-    # XXX if transcript is final (locked=True and status=ended)
-    # XXX send a final event to the client and close the connection
-
-    # endless loop to wait for new events
     try:
+        # on first connection, send all events only to the current user
+        for event in transcript.events:
+            # for now, do not send TRANSCRIPT or STATUS options - theses are live event
+            # not necessary to be sent to the client; but keep the rest
+            name = event.event
+            if name in ("TRANSCRIPT", "STATUS"):
+                continue
+            await websocket.send_json(event.model_dump(mode="json"))
+
+        # XXX if transcript is final (locked=True and status=ended)
+        # XXX send a final event to the client and close the connection
+
+        # endless loop to wait for new events
+        # we do not have command system now,
         while True:
             await websocket.receive()
     except (RuntimeError, WebSocketDisconnect):
-        ws_manager.disconnect(transcript_id, websocket)
+        await ws_manager.remove_user_from_room(room_id, websocket)
 
 
 # ==============================================================
@@ -491,105 +337,6 @@ async def transcript_events_websocket(
 # ==============================================================
 
 
-async def handle_rtc_event(event: PipelineEvent, args, data):
-    # OFC the current implementation is not good,
-    # but it's just a POC before persistence. It won't query the
-    # transcript from the database for each event.
-    # print(f"Event: {event}", args, data)
-    transcript_id = args
-    transcript = await transcripts_controller.get_by_id(transcript_id)
-    if not transcript:
-        return
-
-    # event send to websocket clients may not be the same as the event
-    # received from the pipeline. For example, the pipeline will send
-    # a TRANSCRIPT event with all words, but this is not what we want
-    # to send to the websocket client.
-
-    # FIXME don't do copy
-    if event == PipelineEvent.TRANSCRIPT:
-        resp = transcript.add_event(
-            event=event,
-            data=TranscriptText(text=data.text, translation=data.translation),
-        )
-        await transcripts_controller.update(
-            transcript,
-            {
-                "events": transcript.events_dump(),
-            },
-        )
-
-    elif event == PipelineEvent.TOPIC:
-        topic = TranscriptTopic(
-            title=data.title,
-            summary=data.summary,
-            transcript=data.transcript.text,
-            timestamp=data.timestamp,
-        )
-        resp = transcript.add_event(event=event, data=topic)
-        transcript.upsert_topic(topic)
-
-        await transcripts_controller.update(
-            transcript,
-            {
-                "events": transcript.events_dump(),
-                "topics": transcript.topics_dump(),
-            },
-        )
-
-    elif event == PipelineEvent.FINAL_TITLE:
-        final_title = TranscriptFinalTitle(title=data.title)
-        resp = transcript.add_event(event=event, data=final_title)
-        await transcripts_controller.update(
-            transcript,
-            {
-                "events": transcript.events_dump(),
-                "title": final_title.title,
-            },
-        )
-
-    elif event == PipelineEvent.FINAL_LONG_SUMMARY:
-        final_long_summary = TranscriptFinalLongSummary(long_summary=data.long_summary)
-        resp = transcript.add_event(event=event, data=final_long_summary)
-        await transcripts_controller.update(
-            transcript,
-            {
-                "events": transcript.events_dump(),
-                "long_summary": final_long_summary.long_summary,
-            },
-        )
-
-    elif event == PipelineEvent.FINAL_SHORT_SUMMARY:
-        final_short_summary = TranscriptFinalShortSummary(
-            short_summary=data.short_summary
-        )
-        resp = transcript.add_event(event=event, data=final_short_summary)
-        await transcripts_controller.update(
-            transcript,
-            {
-                "events": transcript.events_dump(),
-                "short_summary": final_short_summary.short_summary,
-            },
-        )
-
-    elif event == PipelineEvent.STATUS:
-        resp = transcript.add_event(event=event, data=data)
-        await transcripts_controller.update(
-            transcript,
-            {
-                "events": transcript.events_dump(),
-                "status": data.value,
-            },
-        )
-
-    else:
-        logger.warning(f"Unknown event: {event}")
-        return
-
-    # transmit to websocket clients
-    await ws_manager.send_json(transcript_id, resp.model_dump(mode="json"))
-
-
 @router.post("/transcripts/{transcript_id}/record/webrtc")
 async def transcript_record_webrtc(
     transcript_id: str,
@@ -605,13 +352,14 @@ async def transcript_record_webrtc(
     if transcript.locked:
         raise HTTPException(status_code=400, detail="Transcript is locked")
 
+    # create a pipeline runner
+    from reflector.pipelines.main_live_pipeline import PipelineMainLive
+
+    pipeline_runner = PipelineMainLive(transcript_id=transcript_id)
+
     # FIXME do not allow multiple recording at the same time
     return await rtc_offer_base(
         params,
         request,
-        event_callback=handle_rtc_event,
-        event_callback_args=transcript_id,
-        audio_filename=transcript.audio_mp3_filename,
-        source_language=transcript.source_language,
-        target_language=transcript.target_language,
+        pipeline_runner=pipeline_runner,
     )
diff --git a/server/reflector/worker/app.py b/server/reflector/worker/app.py
new file mode 100644
index 00000000..e1000364
--- /dev/null
+++ b/server/reflector/worker/app.py
@@ -0,0 +1,12 @@
+from celery import Celery
+from reflector.settings import settings
+
+app = Celery(__name__)
+app.conf.broker_url = settings.CELERY_BROKER_URL
+app.conf.result_backend = settings.CELERY_RESULT_BACKEND
+app.conf.broker_connection_retry_on_startup = True
+app.autodiscover_tasks(
+    [
+        "reflector.pipelines.main_live_pipeline",
+    ]
+)
diff --git a/server/reflector/ws_manager.py b/server/reflector/ws_manager.py
new file mode 100644
index 00000000..a84e3361
--- /dev/null
+++ b/server/reflector/ws_manager.py
@@ -0,0 +1,126 @@
+"""
+Websocket manager
+=================
+
+This module contains the WebsocketManager class, which is responsible for
+managing websockets and handling websocket connections.
+
+It uses the RedisPubSubManager class to subscribe to Redis channels and
+broadcast messages to all connected websockets.
+"""
+
+import asyncio
+import json
+import threading
+
+import redis.asyncio as redis
+from fastapi import WebSocket
+from reflector.settings import settings
+
+
+class RedisPubSubManager:
+    def __init__(self, host="localhost", port=6379):
+        self.redis_host = host
+        self.redis_port = port
+        self.redis_connection = None
+        self.pubsub = None
+
+    async def get_redis_connection(self) -> redis.Redis:
+        return redis.Redis(
+            host=self.redis_host,
+            port=self.redis_port,
+            auto_close_connection_pool=False,
+        )
+
+    async def connect(self) -> None:
+        if self.redis_connection is not None:
+            return
+        self.redis_connection = await self.get_redis_connection()
+        self.pubsub = self.redis_connection.pubsub()
+
+    async def disconnect(self) -> None:
+        if self.redis_connection is None:
+            return
+        await self.redis_connection.close()
+        self.redis_connection = None
+
+    async def send_json(self, room_id: str, message: str) -> None:
+        if not self.redis_connection:
+            await self.connect()
+        message = json.dumps(message)
+        await self.redis_connection.publish(room_id, message)
+
+    async def subscribe(self, room_id: str) -> redis.Redis:
+        await self.pubsub.subscribe(room_id)
+        return self.pubsub
+
+    async def unsubscribe(self, room_id: str) -> None:
+        await self.pubsub.unsubscribe(room_id)
+
+
+class WebsocketManager:
+    def __init__(self, pubsub_client: RedisPubSubManager = None):
+        self.rooms: dict = {}
+        self.pubsub_client = pubsub_client
+
+    async def add_user_to_room(self, room_id: str, websocket: WebSocket) -> None:
+        await websocket.accept()
+
+        if room_id in self.rooms:
+            self.rooms[room_id].append(websocket)
+        else:
+            self.rooms[room_id] = [websocket]
+
+            await self.pubsub_client.connect()
+            pubsub_subscriber = await self.pubsub_client.subscribe(room_id)
+            asyncio.create_task(self._pubsub_data_reader(pubsub_subscriber))
+
+    async def send_json(self, room_id: str, message: dict) -> None:
+        await self.pubsub_client.send_json(room_id, message)
+
+    async def remove_user_from_room(self, room_id: str, websocket: WebSocket) -> None:
+        self.rooms[room_id].remove(websocket)
+
+        if len(self.rooms[room_id]) == 0:
+            del self.rooms[room_id]
+            await self.pubsub_client.unsubscribe(room_id)
+
+    async def _pubsub_data_reader(self, pubsub_subscriber):
+        while True:
+            message = await pubsub_subscriber.get_message(
+                ignore_subscribe_messages=True
+            )
+            if message is not None:
+                room_id = message["channel"].decode("utf-8")
+                all_sockets = self.rooms[room_id]
+                for socket in all_sockets:
+                    data = json.loads(message["data"].decode("utf-8"))
+                    await socket.send_json(data)
+
+
+def get_ws_manager() -> WebsocketManager:
+    """
+    Returns the WebsocketManager instance for managing websockets.
+
+    This function initializes and returns the WebsocketManager instance,
+    which is responsible for managing websockets and handling websocket
+    connections.
+
+    Returns:
+        WebsocketManager: The initialized WebsocketManager instance.
+
+    Raises:
+        ImportError: If the 'reflector.settings' module cannot be imported.
+        RedisConnectionError: If there is an error connecting to the Redis server.
+    """
+    local = threading.local()
+    if hasattr(local, "ws_manager"):
+        return local.ws_manager
+
+    pubsub_client = RedisPubSubManager(
+        host=settings.REDIS_HOST,
+        port=settings.REDIS_PORT,
+    )
+    ws_manager = WebsocketManager(pubsub_client=pubsub_client)
+    local.ws_manager = ws_manager
+    return ws_manager
diff --git a/server/runserver.sh b/server/runserver.sh
index 38eafe09..b0c3f138 100755
--- a/server/runserver.sh
+++ b/server/runserver.sh
@@ -4,4 +4,11 @@ if [ -f "/venv/bin/activate" ]; then
     source /venv/bin/activate
 fi
 alembic upgrade head
-python -m reflector.app
+
+if [ "${ENTRYPOINT}" = "server" ]; then
+    python -m reflector.app
+elif [ "${ENTRYPOINT}" = "worker" ]; then
+    celery -A reflector.worker.app worker --loglevel=info
+else
+    echo "Unknown command"
+fi
diff --git a/server/tests/conftest.py b/server/tests/conftest.py
index 76b56abf..aafca9fd 100644
--- a/server/tests/conftest.py
+++ b/server/tests/conftest.py
@@ -45,28 +45,50 @@ async def dummy_transcript():
     from reflector.processors.types import AudioFile, Transcript, Word
 
     class TestAudioTranscriptProcessor(AudioTranscriptProcessor):
-        async def _transcript(self, data: AudioFile):
-            source_language = self.get_pref("audio:source_language", "en")
-            print("transcripting", source_language)
-            print("pipeline", self.pipeline)
-            print("prefs", self.pipeline.prefs)
+        _time_idx = 0
 
+        async def _transcript(self, data: AudioFile):
+            i = self._time_idx
+            self._time_idx += 2
             return Transcript(
                 text="Hello world.",
                 words=[
-                    Word(start=0.0, end=1.0, text="Hello"),
-                    Word(start=1.0, end=2.0, text=" world."),
+                    Word(start=i, end=i + 1, text="Hello", speaker=0),
+                    Word(start=i + 1, end=i + 2, text=" world.", speaker=0),
                 ],
             )
 
     with patch(
         "reflector.processors.audio_transcript_auto"
-        ".AudioTranscriptAutoProcessor.get_instance"
+        ".AudioTranscriptAutoProcessor.__new__"
     ) as mock_audio:
         mock_audio.return_value = TestAudioTranscriptProcessor()
         yield
 
 
+@pytest.fixture
+async def dummy_diarization():
+    from reflector.processors.audio_diarization import AudioDiarizationProcessor
+
+    class TestAudioDiarizationProcessor(AudioDiarizationProcessor):
+        _time_idx = 0
+
+        async def _diarize(self, data):
+            i = self._time_idx
+            self._time_idx += 2
+            return [
+                {"start": i, "end": i + 1, "speaker": 0},
+                {"start": i + 1, "end": i + 2, "speaker": 1},
+            ]
+
+    with patch(
+        "reflector.processors.audio_diarization_auto"
+        ".AudioDiarizationAutoProcessor.__new__"
+    ) as mock_audio:
+        mock_audio.return_value = TestAudioDiarizationProcessor()
+        yield
+
+
 @pytest.fixture
 async def dummy_llm():
     from reflector.llm.base import LLM
@@ -98,7 +120,17 @@ def ensure_casing():
 @pytest.fixture
 def sentence_tokenize():
     with patch(
-        "reflector.processors.TranscriptFinalLongSummaryProcessor" ".sentence_tokenize"
+        "reflector.processors.TranscriptFinalLongSummaryProcessor.sentence_tokenize"
     ) as mock_sent_tokenize:
         mock_sent_tokenize.return_value = ["LLM LONG SUMMARY"]
         yield
+
+
+@pytest.fixture(scope="session")
+def celery_enable_logging():
+    return True
+
+
+@pytest.fixture(scope="session")
+def celery_config():
+    return {"broker_url": "memory://", "result_backend": "rpc"}
diff --git a/server/tests/test_processor_transcript_segment.py b/server/tests/test_processor_transcript_segment.py
new file mode 100644
index 00000000..6fde0dd1
--- /dev/null
+++ b/server/tests/test_processor_transcript_segment.py
@@ -0,0 +1,161 @@
+def test_processor_transcript_segment():
+    from reflector.processors.types import Transcript, Word
+
+    transcript = Transcript(
+        words=[
+            Word(text=" the", start=5.12, end=5.48, speaker=0),
+            Word(text=" different", start=5.48, end=5.8, speaker=0),
+            Word(text=" projects", start=5.8, end=6.3, speaker=0),
+            Word(text=" that", start=6.3, end=6.5, speaker=0),
+            Word(text=" are", start=6.5, end=6.58, speaker=0),
+            Word(text=" going", start=6.58, end=6.82, speaker=0),
+            Word(text=" on", start=6.82, end=7.26, speaker=0),
+            Word(text=" to", start=7.26, end=7.4, speaker=0),
+            Word(text=" give", start=7.4, end=7.54, speaker=0),
+            Word(text=" you", start=7.54, end=7.9, speaker=0),
+            Word(text=" context", start=7.9, end=8.24, speaker=0),
+            Word(text=" and", start=8.24, end=8.66, speaker=0),
+            Word(text=" I", start=8.66, end=8.72, speaker=0),
+            Word(text=" think", start=8.72, end=8.82, speaker=0),
+            Word(text=" that's", start=8.82, end=9.04, speaker=0),
+            Word(text=" what", start=9.04, end=9.12, speaker=0),
+            Word(text=" we'll", start=9.12, end=9.24, speaker=0),
+            Word(text=" do", start=9.24, end=9.32, speaker=0),
+            Word(text=" this", start=9.32, end=9.52, speaker=0),
+            Word(text=" week.", start=9.52, end=9.76, speaker=0),
+            Word(text=" Um,", start=10.24, end=10.62, speaker=0),
+            Word(text=" so,", start=11.36, end=11.94, speaker=0),
+            Word(text=" um,", start=12.46, end=12.92, speaker=0),
+            Word(text=" what", start=13.74, end=13.94, speaker=0),
+            Word(text=" we're", start=13.94, end=14.1, speaker=0),
+            Word(text=" going", start=14.1, end=14.24, speaker=0),
+            Word(text=" to", start=14.24, end=14.34, speaker=0),
+            Word(text=" do", start=14.34, end=14.8, speaker=0),
+            Word(text=" at", start=14.8, end=14.98, speaker=0),
+            Word(text=" H", start=14.98, end=15.04, speaker=0),
+            Word(text=" of", start=15.04, end=15.16, speaker=0),
+            Word(text=" you,", start=15.16, end=15.26, speaker=0),
+            Word(text=" maybe.", start=15.28, end=15.34, speaker=0),
+            Word(text=" you", start=15.36, end=15.52, speaker=0),
+            Word(text=" can", start=15.52, end=15.62, speaker=0),
+            Word(text=" introduce", start=15.62, end=15.98, speaker=0),
+            Word(text=" yourself", start=15.98, end=16.42, speaker=0),
+            Word(text=" to", start=16.42, end=16.68, speaker=0),
+            Word(text=" the", start=16.68, end=16.72, speaker=0),
+            Word(text=" team", start=16.72, end=17.52, speaker=0),
+            Word(text=" quickly", start=17.87, end=18.65, speaker=0),
+            Word(text=" and", start=18.65, end=19.63, speaker=0),
+            Word(text=" Oh,", start=20.91, end=21.55, speaker=0),
+            Word(text=" this", start=21.67, end=21.83, speaker=0),
+            Word(text=" is", start=21.83, end=22.17, speaker=0),
+            Word(text=" a", start=22.17, end=22.35, speaker=0),
+            Word(text=" reflector", start=22.35, end=22.89, speaker=0),
+            Word(text=" translating", start=22.89, end=23.33, speaker=0),
+            Word(text=" into", start=23.33, end=23.73, speaker=0),
+            Word(text=" French", start=23.73, end=23.95, speaker=0),
+            Word(text=" for", start=23.95, end=24.15, speaker=0),
+            Word(text=" me.", start=24.15, end=24.43, speaker=0),
+            Word(text=" This", start=27.87, end=28.19, speaker=0),
+            Word(text=" is", start=28.19, end=28.45, speaker=0),
+            Word(text=" all", start=28.45, end=28.79, speaker=0),
+            Word(text=" the", start=28.79, end=29.15, speaker=0),
+            Word(text=" way,", start=29.15, end=29.15, speaker=0),
+            Word(text=" please,", start=29.53, end=29.59, speaker=0),
+            Word(text=" please,", start=29.73, end=29.77, speaker=0),
+            Word(text=" please,", start=29.77, end=29.83, speaker=0),
+            Word(text=" please.", start=29.83, end=29.97, speaker=0),
+            Word(text=" Yeah,", start=29.97, end=30.17, speaker=0),
+            Word(text=" that's", start=30.25, end=30.33, speaker=0),
+            Word(text=" all", start=30.33, end=30.49, speaker=0),
+            Word(text=" it's", start=30.49, end=30.69, speaker=0),
+            Word(text=" right.", start=30.69, end=30.69, speaker=0),
+            Word(text=" Right.", start=30.72, end=30.98, speaker=1),
+            Word(text=" Yeah,", start=31.56, end=31.72, speaker=2),
+            Word(text=" that's", start=31.86, end=31.98, speaker=2),
+            Word(text=" right.", start=31.98, end=32.2, speaker=2),
+            Word(text=" Because", start=32.38, end=32.46, speaker=0),
+            Word(text=" I", start=32.46, end=32.58, speaker=0),
+            Word(text=" thought", start=32.58, end=32.78, speaker=0),
+            Word(text=" I'd", start=32.78, end=33.0, speaker=0),
+            Word(text=" be", start=33.0, end=33.02, speaker=0),
+            Word(text=" able", start=33.02, end=33.18, speaker=0),
+            Word(text=" to", start=33.18, end=33.34, speaker=0),
+            Word(text=" pull", start=33.34, end=33.52, speaker=0),
+            Word(text=" out.", start=33.52, end=33.68, speaker=0),
+            Word(text=" Yeah,", start=33.7, end=33.9, speaker=0),
+            Word(text=" that", start=33.9, end=34.02, speaker=0),
+            Word(text=" was", start=34.02, end=34.24, speaker=0),
+            Word(text=" the", start=34.24, end=34.34, speaker=0),
+            Word(text=" one", start=34.34, end=34.44, speaker=0),
+            Word(text=" before", start=34.44, end=34.7, speaker=0),
+            Word(text=" that.", start=34.7, end=35.24, speaker=0),
+            Word(text=" Friends,", start=35.84, end=36.46, speaker=0),
+            Word(text=" if", start=36.64, end=36.7, speaker=0),
+            Word(text=" you", start=36.7, end=36.7, speaker=0),
+            Word(text=" have", start=36.7, end=37.24, speaker=0),
+            Word(text=" tell", start=37.24, end=37.44, speaker=0),
+            Word(text=" us", start=37.44, end=37.68, speaker=0),
+            Word(text=" if", start=37.68, end=37.82, speaker=0),
+            Word(text=" it's", start=37.82, end=38.04, speaker=0),
+            Word(text=" good,", start=38.04, end=38.58, speaker=0),
+            Word(text=" exceptionally", start=38.96, end=39.1, speaker=0),
+            Word(text=" good", start=39.1, end=39.6, speaker=0),
+            Word(text=" and", start=39.6, end=39.86, speaker=0),
+            Word(text=" tell", start=39.86, end=40.0, speaker=0),
+            Word(text=" us", start=40.0, end=40.06, speaker=0),
+            Word(text=" when", start=40.06, end=40.2, speaker=0),
+            Word(text=" it's", start=40.2, end=40.34, speaker=0),
+            Word(text=" exceptionally", start=40.34, end=40.6, speaker=0),
+            Word(text=" bad.", start=40.6, end=40.94, speaker=0),
+            Word(text=" We", start=40.96, end=41.26, speaker=0),
+            Word(text=" don't", start=41.26, end=41.44, speaker=0),
+            Word(text=" need", start=41.44, end=41.66, speaker=0),
+            Word(text=" that", start=41.66, end=41.82, speaker=0),
+            Word(text=" at", start=41.82, end=41.94, speaker=0),
+            Word(text=" the", start=41.94, end=41.98, speaker=0),
+            Word(text=" middle", start=41.98, end=42.18, speaker=0),
+            Word(text=" of", start=42.18, end=42.36, speaker=0),
+            Word(text=" age.", start=42.36, end=42.7, speaker=0),
+            Word(text=" Okay,", start=43.26, end=43.44, speaker=0),
+            Word(text=" yeah,", start=43.68, end=43.76, speaker=0),
+            Word(text=" that", start=43.78, end=44.3, speaker=0),
+            Word(text=" sentence", start=44.3, end=44.72, speaker=0),
+            Word(text=" right", start=44.72, end=45.1, speaker=0),
+            Word(text=" before.", start=45.1, end=45.56, speaker=0),
+            Word(text=" it", start=46.08, end=46.36, speaker=0),
+            Word(text=" realizing", start=46.36, end=47.0, speaker=0),
+            Word(text=" that", start=47.0, end=47.28, speaker=0),
+            Word(text=" I", start=47.28, end=47.28, speaker=0),
+            Word(text=" was", start=47.28, end=47.64, speaker=0),
+            Word(text=" saying", start=47.64, end=48.06, speaker=0),
+            Word(text=" that", start=48.06, end=48.44, speaker=0),
+            Word(text=" it's", start=48.44, end=48.54, speaker=0),
+            Word(text=" interesting", start=48.54, end=48.78, speaker=0),
+            Word(text=" that", start=48.78, end=48.96, speaker=0),
+            Word(text=" it's", start=48.96, end=49.08, speaker=0),
+            Word(text=" translating", start=49.08, end=49.32, speaker=0),
+            Word(text=" the", start=49.32, end=49.56, speaker=0),
+            Word(text=" French", start=49.56, end=49.76, speaker=0),
+            Word(text=" was", start=49.76, end=50.16, speaker=0),
+            Word(text=" completely", start=50.16, end=50.4, speaker=0),
+            Word(text=" wrong.", start=50.4, end=50.7, speaker=0),
+        ]
+    )
+
+    segments = transcript.as_segments()
+    assert len(segments) == 7
+
+    # check speaker order
+    assert segments[0].speaker == 0
+    assert segments[1].speaker == 0
+    assert segments[2].speaker == 0
+    assert segments[3].speaker == 1
+    assert segments[4].speaker == 2
+    assert segments[5].speaker == 0
+    assert segments[6].speaker == 0
+
+    # check the timing (first entry, and first of others speakers)
+    assert segments[0].start == 5.12
+    assert segments[3].start == 30.72
+    assert segments[4].start == 31.56
+    assert segments[5].start == 32.38
diff --git a/server/tests/test_retry_decorator.py b/server/tests/test_retry_decorator.py
index 22729eac..c60a490f 100644
--- a/server/tests/test_retry_decorator.py
+++ b/server/tests/test_retry_decorator.py
@@ -1,3 +1,4 @@
+import asyncio
 import pytest
 import httpx
 from reflector.utils.retry import (
@@ -8,6 +9,31 @@ from reflector.utils.retry import (
 )
 
 
+@pytest.mark.asyncio
+async def test_retry_redirect(httpx_mock):
+    async def custom_response(request: httpx.Request):
+        if request.url.path == "/hello":
+            await asyncio.sleep(1)
+            return httpx.Response(
+                status_code=303, headers={"location": "https://test_url/redirected"}
+            )
+        elif request.url.path == "/redirected":
+            return httpx.Response(status_code=200, json={"hello": "world"})
+        else:
+            raise Exception("Unexpected path")
+
+    httpx_mock.add_callback(custom_response)
+    async with httpx.AsyncClient() as client:
+        # timeout should not triggered, as it will end up ok
+        # even though the first request is a 303 and took more that 0.5
+        resp = await retry(client.get)(
+            "https://test_url/hello",
+            retry_timeout=0.5,
+            follow_redirects=True,
+        )
+        assert resp.json() == {"hello": "world"}
+
+
 @pytest.mark.asyncio
 async def test_retry_httpx(httpx_mock):
     # this code should be force a retry
diff --git a/server/tests/test_transcripts_rtc_ws.py b/server/tests/test_transcripts_rtc_ws.py
index 50e74231..413c8b24 100644
--- a/server/tests/test_transcripts_rtc_ws.py
+++ b/server/tests/test_transcripts_rtc_ws.py
@@ -32,7 +32,7 @@ class ThreadedUvicorn:
 
 
 @pytest.fixture
-async def appserver(tmpdir):
+async def appserver(tmpdir, celery_session_app, celery_session_worker):
     from reflector.settings import settings
     from reflector.app import app
 
@@ -52,12 +52,20 @@ async def appserver(tmpdir):
     settings.DATA_DIR = DATA_DIR
 
 
+@pytest.fixture(scope="session")
+def celery_includes():
+    return ["reflector.pipelines.main_live_pipeline"]
+
+
+@pytest.mark.usefixtures("celery_session_app")
+@pytest.mark.usefixtures("celery_session_worker")
 @pytest.mark.asyncio
 async def test_transcript_rtc_and_websocket(
     tmpdir,
     dummy_llm,
     dummy_transcript,
     dummy_processors,
+    dummy_diarization,
     ensure_casing,
     appserver,
     sentence_tokenize,
@@ -95,6 +103,7 @@ async def test_transcript_rtc_and_websocket(
                 print("Test websocket: DISCONNECTED")
 
     websocket_task = asyncio.get_event_loop().create_task(websocket_task())
+    print("Test websocket: TASK CREATED", websocket_task)
 
     # create stream client
     import argparse
@@ -121,14 +130,20 @@ async def test_transcript_rtc_and_websocket(
     # XXX aiortc is long to close the connection
     # instead of waiting a long time, we just send a STOP
     client.channel.send(json.dumps({"cmd": "STOP"}))
-
-    # wait the processing to finish
-    await asyncio.sleep(2)
-
     await client.stop()
 
     # wait the processing to finish
-    await asyncio.sleep(2)
+    timeout = 20
+    while True:
+        # fetch the transcript and check if it is ended
+        resp = await ac.get(f"/transcripts/{tid}")
+        assert resp.status_code == 200
+        if resp.json()["status"] in ("ended", "error"):
+            break
+        await asyncio.sleep(1)
+
+    if resp.json()["status"] != "ended":
+        raise TimeoutError("Timeout while waiting for transcript to be ended")
 
     # stop websocket task
     websocket_task.cancel()
@@ -169,29 +184,28 @@ async def test_transcript_rtc_and_websocket(
 
     # check status order
     statuses = [e["data"]["value"] for e in events if e["event"] == "STATUS"]
-    assert statuses == ["recording", "processing", "ended"]
+    assert statuses.index("recording") < statuses.index("processing")
+    assert statuses.index("processing") < statuses.index("ended")
 
     # ensure the last event received is ended
     assert events[-1]["event"] == "STATUS"
     assert events[-1]["data"]["value"] == "ended"
 
-    # check that transcript status in model is updated
-    resp = await ac.get(f"/transcripts/{tid}")
-    assert resp.status_code == 200
-    assert resp.json()["status"] == "ended"
-
     # check that audio/mp3 is available
     resp = await ac.get(f"/transcripts/{tid}/audio/mp3")
     assert resp.status_code == 200
     assert resp.headers["Content-Type"] == "audio/mpeg"
 
 
+@pytest.mark.usefixtures("celery_session_app")
+@pytest.mark.usefixtures("celery_session_worker")
 @pytest.mark.asyncio
 async def test_transcript_rtc_and_websocket_and_fr(
     tmpdir,
     dummy_llm,
     dummy_transcript,
     dummy_processors,
+    dummy_diarization,
     ensure_casing,
     appserver,
     sentence_tokenize,
@@ -232,6 +246,7 @@ async def test_transcript_rtc_and_websocket_and_fr(
                 print("Test websocket: DISCONNECTED")
 
     websocket_task = asyncio.get_event_loop().create_task(websocket_task())
+    print("Test websocket: TASK CREATED", websocket_task)
 
     # create stream client
     import argparse
@@ -265,6 +280,18 @@ async def test_transcript_rtc_and_websocket_and_fr(
     await client.stop()
 
     # wait the processing to finish
+    timeout = 20
+    while True:
+        # fetch the transcript and check if it is ended
+        resp = await ac.get(f"/transcripts/{tid}")
+        assert resp.status_code == 200
+        if resp.json()["status"] == "ended":
+            break
+        await asyncio.sleep(1)
+
+    if resp.json()["status"] != "ended":
+        raise TimeoutError("Timeout while waiting for transcript to be ended")
+
     await asyncio.sleep(2)
 
     # stop websocket task
@@ -306,7 +333,8 @@ async def test_transcript_rtc_and_websocket_and_fr(
 
     # check status order
     statuses = [e["data"]["value"] for e in events if e["event"] == "STATUS"]
-    assert statuses == ["recording", "processing", "ended"]
+    assert statuses.index("recording") < statuses.index("processing")
+    assert statuses.index("processing") < statuses.index("ended")
 
     # ensure the last event received is ended
     assert events[-1]["event"] == "STATUS"
diff --git a/www/app/[domain]/transcripts/[transcriptId]/page.tsx b/www/app/[domain]/transcripts/[transcriptId]/page.tsx
index 97f1a846..d58d5247 100644
--- a/www/app/[domain]/transcripts/[transcriptId]/page.tsx
+++ b/www/app/[domain]/transcripts/[transcriptId]/page.tsx
@@ -3,6 +3,7 @@ import Modal from "../modal";
 import useTranscript from "../useTranscript";
 import useTopics from "../useTopics";
 import useWaveform from "../useWaveform";
+import useMp3 from "../useMp3";
 import { TopicList } from "../topicList";
 import Recorder from "../recorder";
 import { Topic } from "../webSocketTypes";
@@ -28,6 +29,7 @@ export default function TranscriptDetails(details: TranscriptDetails) {
   const topics = useTopics(protectedPath, transcriptId);
   const waveform = useWaveform(protectedPath, transcriptId);
   const useActiveTopic = useState<Topic | null>(null);
+  const mp3 = useMp3(api, transcriptId);
 
   if (transcript?.error /** || topics?.error || waveform?.error **/) {
     return (
@@ -62,6 +64,7 @@ export default function TranscriptDetails(details: TranscriptDetails) {
                 waveform={waveform?.waveform}
                 isPastMeeting={true}
                 transcriptId={transcript?.response?.id}
+                mp3Blob={mp3.blob}
               />
             )}
           </div>
diff --git a/www/app/[domain]/transcripts/recorder.tsx b/www/app/[domain]/transcripts/recorder.tsx
index dc6bc0a7..765d8f09 100644
--- a/www/app/[domain]/transcripts/recorder.tsx
+++ b/www/app/[domain]/transcripts/recorder.tsx
@@ -30,6 +30,7 @@ type RecorderProps = {
   waveform?: AudioWaveform | null;
   isPastMeeting: boolean;
   transcriptId?: string | null;
+  mp3Blob?: Blob | null;
 };
 
 export default function Recorder(props: RecorderProps) {
@@ -108,11 +109,7 @@ export default function Recorder(props: RecorderProps) {
     if (waveformRef.current) {
       const _wavesurfer = WaveSurfer.create({
         container: waveformRef.current,
-        url: props.transcriptId
-          ? `${process.env.NEXT_PUBLIC_API_URL}/v1/transcripts/${props.transcriptId}/audio/mp3`
-          : undefined,
         peaks: props.waveform?.data,
-
         hideScrollbar: true,
         autoCenter: true,
         barWidth: 2,
@@ -146,6 +143,10 @@ export default function Recorder(props: RecorderProps) {
 
       if (props.isPastMeeting) _wavesurfer.toggleInteraction(true);
 
+      if (props.mp3Blob) {
+        _wavesurfer.loadBlob(props.mp3Blob);
+      }
+
       setWavesurfer(_wavesurfer);
 
       return () => {
@@ -157,6 +158,12 @@ export default function Recorder(props: RecorderProps) {
     }
   }, []);
 
+  useEffect(() => {
+    if (!wavesurfer) return;
+    if (!props.mp3Blob) return;
+    wavesurfer.loadBlob(props.mp3Blob);
+  }, [props.mp3Blob]);
+
   useEffect(() => {
     topicsRef.current = props.topics;
     if (!isRecording) renderMarkers();
diff --git a/www/app/[domain]/transcripts/topicList.tsx b/www/app/[domain]/transcripts/topicList.tsx
index e5de09c8..e7454f79 100644
--- a/www/app/[domain]/transcripts/topicList.tsx
+++ b/www/app/[domain]/transcripts/topicList.tsx
@@ -7,6 +7,7 @@ import {
 import { formatTime } from "../../lib/time";
 import ScrollToBottom from "./scrollToBottom";
 import { Topic } from "./webSocketTypes";
+import { generateHighContrastColor } from "../../lib/utils";
 
 type TopicListProps = {
   topics: Topic[];
@@ -103,7 +104,37 @@ export function TopicList({
                   />
                 </div>
                 {activeTopic?.id == topic.id && (
-                  <div className="p-2">{topic.transcript}</div>
+                  <div className="p-2">
+                    {topic.segments ? (
+                      <>
+                        {topic.segments.map((segment, index: number) => (
+                          <p
+                            key={index}
+                            className="text-left text-slate-500 text-sm md:text-base"
+                          >
+                            <span className="font-mono text-slate-500">
+                              [{formatTime(segment.start)}]
+                            </span>
+                            <span
+                              className="font-bold text-slate-500"
+                              style={{
+                                color: generateHighContrastColor(
+                                  `Speaker ${segment.speaker}`,
+                                  [96, 165, 250],
+                                ),
+                              }}
+                            >
+                              {" "}
+                              (Speaker {segment.speaker}):
+                            </span>{" "}
+                            <span>{segment.text}</span>
+                          </p>
+                        ))}
+                      </>
+                    ) : (
+                      <>{topic.transcript}</>
+                    )}
+                  </div>
                 )}
               </button>
             ))}
diff --git a/www/app/[domain]/transcripts/useMp3.ts b/www/app/[domain]/transcripts/useMp3.ts
index 8bccf903..b7677180 100644
--- a/www/app/[domain]/transcripts/useMp3.ts
+++ b/www/app/[domain]/transcripts/useMp3.ts
@@ -1,36 +1,64 @@
-import { useEffect, useState } from "react";
+import { useContext, useEffect, useState } from "react";
 import {
   DefaultApi,
-  V1TranscriptGetAudioMp3Request,
+  // V1TranscriptGetAudioMp3Request,
 } from "../../api/apis/DefaultApi";
 import {} from "../../api";
 import { useError } from "../../(errors)/errorContext";
+import { DomainContext } from "../domainContext";
 
 type Mp3Response = {
   url: string | null;
+  blob: Blob | null;
   loading: boolean;
   error: Error | null;
 };
 
 const useMp3 = (api: DefaultApi, id: string): Mp3Response => {
   const [url, setUrl] = useState<string | null>(null);
+  const [blob, setBlob] = useState<Blob | null>(null);
   const [loading, setLoading] = useState<boolean>(false);
   const [error, setErrorState] = useState<Error | null>(null);
   const { setError } = useError();
+  const { api_url } = useContext(DomainContext);
 
   const getMp3 = (id: string) => {
-    if (!id) throw new Error("Transcript ID is required to get transcript Mp3");
+    if (!id) return;
 
     setLoading(true);
-    const requestParameters: V1TranscriptGetAudioMp3Request = {
-      transcriptId: id,
-    };
-    api
-      .v1TranscriptGetAudioMp3(requestParameters)
-      .then((result) => {
-        setUrl(result);
-        setLoading(false);
-        console.debug("Transcript Mp3 loaded:", result);
+    // XXX Current API interface does not output a blob, we need to to is manually
+    // const requestParameters: V1TranscriptGetAudioMp3Request = {
+    //   transcriptId: id,
+    // };
+    // api
+    //   .v1TranscriptGetAudioMp3(requestParameters)
+    //   .then((result) => {
+    //     setUrl(result);
+    //     setLoading(false);
+    //     console.debug("Transcript Mp3 loaded:", result);
+    //   })
+    //   .catch((err) => {
+    //     setError(err);
+    //     setErrorState(err);
+    //   });
+    const localUrl = `${api_url}/v1/transcripts/${id}/audio/mp3`;
+    if (localUrl == url) return;
+    const headers = new Headers();
+
+    if (api.configuration.configuration.accessToken) {
+      headers.set("Authorization", api.configuration.configuration.accessToken);
+    }
+
+    fetch(localUrl, {
+      method: "GET",
+      headers,
+    })
+      .then((response) => {
+        setUrl(localUrl);
+        response.blob().then((blob) => {
+          setBlob(blob);
+          setLoading(false);
+        });
       })
       .catch((err) => {
         setError(err);
@@ -42,7 +70,7 @@ const useMp3 = (api: DefaultApi, id: string): Mp3Response => {
     getMp3(id);
   }, [id]);
 
-  return { url, loading, error };
+  return { url, blob, loading, error };
 };
 
 export default useMp3;
diff --git a/www/app/[domain]/transcripts/useWebSockets.ts b/www/app/[domain]/transcripts/useWebSockets.ts
index 6bd7bf48..5610c2a4 100644
--- a/www/app/[domain]/transcripts/useWebSockets.ts
+++ b/www/app/[domain]/transcripts/useWebSockets.ts
@@ -58,6 +58,39 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             title: "Topic 1: Introduction to Quantum Mechanics",
             transcript:
               "A brief overview of quantum mechanics and its principles.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+              ,
+              {
+                speaker: 3,
+                start: 90,
+                text: "This is the third speaker",
+              },
+              {
+                speaker: 4,
+                start: 90,
+                text: "This is the fourth speaker",
+              },
+              {
+                speaker: 5,
+                start: 123,
+                text: "This is the fifth speaker",
+              },
+              {
+                speaker: 6,
+                start: 300,
+                text: "This is the sixth speaker",
+              },
+            ],
           },
           {
             id: "2",
@@ -66,6 +99,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             title: "Topic 2: Machine Learning Algorithms",
             transcript:
               "Understanding the different types of machine learning algorithms.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
           {
             id: "3",
@@ -73,6 +118,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             summary: "This is test topic 3",
             title: "Topic 3: Mental Health Awareness",
             transcript: "Ways to improve mental health and reduce stigma.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
           {
             id: "4",
@@ -80,6 +137,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             summary: "This is test topic 4",
             title: "Topic 4: Basics of Productivity",
             transcript: "Tips and tricks to increase daily productivity.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
           {
             id: "5",
@@ -88,6 +157,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             title: "Topic 5: Future of Aviation",
             transcript:
               "Exploring the advancements and possibilities in aviation.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
         ]);
 
@@ -106,6 +187,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
               "Topic 1: Introduction to Quantum Mechanics, a brief overview of quantum mechanics and its principles.",
             transcript:
               "A brief overview of quantum mechanics and its principles.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
           {
             id: "2",
@@ -115,6 +208,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
               "Topic 2: Machine Learning Algorithms, understanding the different types of machine learning algorithms.",
             transcript:
               "Understanding the different types of machine learning algorithms.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
           {
             id: "3",
@@ -123,6 +228,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             title:
               "Topic 3: Mental Health Awareness, ways to improve mental health and reduce stigma.",
             transcript: "Ways to improve mental health and reduce stigma.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
           {
             id: "4",
@@ -131,6 +248,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             title:
               "Topic 4: Basics of Productivity, tips and tricks to increase daily productivity.",
             transcript: "Tips and tricks to increase daily productivity.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
           {
             id: "5",
@@ -140,6 +269,18 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
               "Topic 5: Future of Aviation, exploring the advancements and possibilities in aviation.",
             transcript:
               "Exploring the advancements and possibilities in aviation.",
+            segments: [
+              {
+                speaker: 1,
+                start: 0,
+                text: "This is the transcription of an example title",
+              },
+              {
+                speaker: 2,
+                start: 10,
+                text: "This is the second speaker",
+              },
+            ],
           },
         ]);
 
@@ -173,7 +314,17 @@ export const useWebSockets = (transcriptId: string | null): UseWebSockets => {
             break;
 
           case "TOPIC":
-            setTopics((prevTopics) => [...prevTopics, message.data]);
+            setTopics((prevTopics) => {
+              const topic = message.data as Topic;
+              const index = prevTopics.findIndex(
+                (prevTopic) => prevTopic.id === topic.id,
+              );
+              if (index >= 0) {
+                prevTopics[index] = topic;
+                return prevTopics;
+              }
+              return [...prevTopics, topic];
+            });
             console.debug("TOPIC event:", message.data);
             break;
 
diff --git a/www/app/[domain]/transcripts/webSocketTypes.ts b/www/app/[domain]/transcripts/webSocketTypes.ts
index 450b3b1c..edd35eb6 100644
--- a/www/app/[domain]/transcripts/webSocketTypes.ts
+++ b/www/app/[domain]/transcripts/webSocketTypes.ts
@@ -1,10 +1,6 @@
-export type Topic = {
-  timestamp: number;
-  title: string;
-  transcript: string;
-  summary: string;
-  id: string;
-};
+import { GetTranscriptTopic } from "../../api";
+
+export type Topic = GetTranscriptTopic;
 
 export type Transcript = {
   text: string;
diff --git a/www/app/api/.openapi-generator/FILES b/www/app/api/.openapi-generator/FILES
index 16763a8d..532a6a16 100644
--- a/www/app/api/.openapi-generator/FILES
+++ b/www/app/api/.openapi-generator/FILES
@@ -5,10 +5,11 @@ models/AudioWaveform.ts
 models/CreateTranscript.ts
 models/DeletionStatus.ts
 models/GetTranscript.ts
+models/GetTranscriptSegmentTopic.ts
+models/GetTranscriptTopic.ts
 models/HTTPValidationError.ts
 models/PageGetTranscript.ts
 models/RtcOffer.ts
-models/TranscriptTopic.ts
 models/UpdateTranscript.ts
 models/UserInfo.ts
 models/ValidationError.ts
diff --git a/www/app/api/apis/DefaultApi.ts b/www/app/api/apis/DefaultApi.ts
index d51d42ca..5bb2e7e9 100644
--- a/www/app/api/apis/DefaultApi.ts
+++ b/www/app/api/apis/DefaultApi.ts
@@ -42,10 +42,6 @@ import {
   UpdateTranscriptToJSON,
 } from "../models";
 
-export interface RtcOfferRequest {
-  rtcOffer: RtcOffer;
-}
-
 export interface V1TranscriptDeleteRequest {
   transcriptId: any;
 }
@@ -56,6 +52,7 @@ export interface V1TranscriptGetRequest {
 
 export interface V1TranscriptGetAudioMp3Request {
   transcriptId: any;
+  token?: any;
 }
 
 export interface V1TranscriptGetAudioWaveformRequest {
@@ -132,58 +129,6 @@ export class DefaultApi extends runtime.BaseAPI {
     return await response.value();
   }
 
-  /**
-   * Rtc Offer
-   */
-  async rtcOfferRaw(
-    requestParameters: RtcOfferRequest,
-    initOverrides?: RequestInit | runtime.InitOverrideFunction,
-  ): Promise<runtime.ApiResponse<any>> {
-    if (
-      requestParameters.rtcOffer === null ||
-      requestParameters.rtcOffer === undefined
-    ) {
-      throw new runtime.RequiredError(
-        "rtcOffer",
-        "Required parameter requestParameters.rtcOffer was null or undefined when calling rtcOffer.",
-      );
-    }
-
-    const queryParameters: any = {};
-
-    const headerParameters: runtime.HTTPHeaders = {};
-
-    headerParameters["Content-Type"] = "application/json";
-
-    const response = await this.request(
-      {
-        path: `/offer`,
-        method: "POST",
-        headers: headerParameters,
-        query: queryParameters,
-        body: RtcOfferToJSON(requestParameters.rtcOffer),
-      },
-      initOverrides,
-    );
-
-    if (this.isJsonMime(response.headers.get("content-type"))) {
-      return new runtime.JSONApiResponse<any>(response);
-    } else {
-      return new runtime.TextApiResponse(response) as any;
-    }
-  }
-
-  /**
-   * Rtc Offer
-   */
-  async rtcOffer(
-    requestParameters: RtcOfferRequest,
-    initOverrides?: RequestInit | runtime.InitOverrideFunction,
-  ): Promise<any> {
-    const response = await this.rtcOfferRaw(requestParameters, initOverrides);
-    return await response.value();
-  }
-
   /**
    * Transcript Delete
    */
@@ -325,6 +270,10 @@ export class DefaultApi extends runtime.BaseAPI {
 
     const queryParameters: any = {};
 
+    if (requestParameters.token !== undefined) {
+      queryParameters["token"] = requestParameters.token;
+    }
+
     const headerParameters: runtime.HTTPHeaders = {};
 
     if (this.configuration && this.configuration.accessToken) {
diff --git a/www/app/api/models/GetTranscriptSegmentTopic.ts b/www/app/api/models/GetTranscriptSegmentTopic.ts
new file mode 100644
index 00000000..cc2049b1
--- /dev/null
+++ b/www/app/api/models/GetTranscriptSegmentTopic.ts
@@ -0,0 +1,88 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * FastAPI
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+import { exists, mapValues } from "../runtime";
+/**
+ *
+ * @export
+ * @interface GetTranscriptSegmentTopic
+ */
+export interface GetTranscriptSegmentTopic {
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptSegmentTopic
+   */
+  text: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptSegmentTopic
+   */
+  start: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptSegmentTopic
+   */
+  speaker: any | null;
+}
+
+/**
+ * Check if a given object implements the GetTranscriptSegmentTopic interface.
+ */
+export function instanceOfGetTranscriptSegmentTopic(value: object): boolean {
+  let isInstance = true;
+  isInstance = isInstance && "text" in value;
+  isInstance = isInstance && "start" in value;
+  isInstance = isInstance && "speaker" in value;
+
+  return isInstance;
+}
+
+export function GetTranscriptSegmentTopicFromJSON(
+  json: any,
+): GetTranscriptSegmentTopic {
+  return GetTranscriptSegmentTopicFromJSONTyped(json, false);
+}
+
+export function GetTranscriptSegmentTopicFromJSONTyped(
+  json: any,
+  ignoreDiscriminator: boolean,
+): GetTranscriptSegmentTopic {
+  if (json === undefined || json === null) {
+    return json;
+  }
+  return {
+    text: json["text"],
+    start: json["start"],
+    speaker: json["speaker"],
+  };
+}
+
+export function GetTranscriptSegmentTopicToJSON(
+  value?: GetTranscriptSegmentTopic | null,
+): any {
+  if (value === undefined) {
+    return undefined;
+  }
+  if (value === null) {
+    return null;
+  }
+  return {
+    text: value.text,
+    start: value.start,
+    speaker: value.speaker,
+  };
+}
diff --git a/www/app/api/models/GetTranscriptTopic.ts b/www/app/api/models/GetTranscriptTopic.ts
new file mode 100644
index 00000000..460b8b39
--- /dev/null
+++ b/www/app/api/models/GetTranscriptTopic.ts
@@ -0,0 +1,112 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * FastAPI
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+import { exists, mapValues } from "../runtime";
+/**
+ *
+ * @export
+ * @interface GetTranscriptTopic
+ */
+export interface GetTranscriptTopic {
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptTopic
+   */
+  id: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptTopic
+   */
+  title: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptTopic
+   */
+  summary: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptTopic
+   */
+  timestamp: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptTopic
+   */
+  transcript: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof GetTranscriptTopic
+   */
+  segments?: any | null;
+}
+
+/**
+ * Check if a given object implements the GetTranscriptTopic interface.
+ */
+export function instanceOfGetTranscriptTopic(value: object): boolean {
+  let isInstance = true;
+  isInstance = isInstance && "id" in value;
+  isInstance = isInstance && "title" in value;
+  isInstance = isInstance && "summary" in value;
+  isInstance = isInstance && "timestamp" in value;
+  isInstance = isInstance && "transcript" in value;
+
+  return isInstance;
+}
+
+export function GetTranscriptTopicFromJSON(json: any): GetTranscriptTopic {
+  return GetTranscriptTopicFromJSONTyped(json, false);
+}
+
+export function GetTranscriptTopicFromJSONTyped(
+  json: any,
+  ignoreDiscriminator: boolean,
+): GetTranscriptTopic {
+  if (json === undefined || json === null) {
+    return json;
+  }
+  return {
+    id: json["id"],
+    title: json["title"],
+    summary: json["summary"],
+    timestamp: json["timestamp"],
+    transcript: json["transcript"],
+    segments: !exists(json, "segments") ? undefined : json["segments"],
+  };
+}
+
+export function GetTranscriptTopicToJSON(
+  value?: GetTranscriptTopic | null,
+): any {
+  if (value === undefined) {
+    return undefined;
+  }
+  if (value === null) {
+    return null;
+  }
+  return {
+    id: value.id,
+    title: value.title,
+    summary: value.summary,
+    timestamp: value.timestamp,
+    transcript: value.transcript,
+    segments: value.segments,
+  };
+}
diff --git a/www/app/api/models/TranscriptSegmentTopic.ts b/www/app/api/models/TranscriptSegmentTopic.ts
new file mode 100644
index 00000000..73496a67
--- /dev/null
+++ b/www/app/api/models/TranscriptSegmentTopic.ts
@@ -0,0 +1,88 @@
+/* tslint:disable */
+/* eslint-disable */
+/**
+ * FastAPI
+ * No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)
+ *
+ * The version of the OpenAPI document: 0.1.0
+ *
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+import { exists, mapValues } from "../runtime";
+/**
+ *
+ * @export
+ * @interface TranscriptSegmentTopic
+ */
+export interface TranscriptSegmentTopic {
+  /**
+   *
+   * @type {any}
+   * @memberof TranscriptSegmentTopic
+   */
+  speaker: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof TranscriptSegmentTopic
+   */
+  text: any | null;
+  /**
+   *
+   * @type {any}
+   * @memberof TranscriptSegmentTopic
+   */
+  timestamp: any | null;
+}
+
+/**
+ * Check if a given object implements the TranscriptSegmentTopic interface.
+ */
+export function instanceOfTranscriptSegmentTopic(value: object): boolean {
+  let isInstance = true;
+  isInstance = isInstance && "speaker" in value;
+  isInstance = isInstance && "text" in value;
+  isInstance = isInstance && "timestamp" in value;
+
+  return isInstance;
+}
+
+export function TranscriptSegmentTopicFromJSON(
+  json: any,
+): TranscriptSegmentTopic {
+  return TranscriptSegmentTopicFromJSONTyped(json, false);
+}
+
+export function TranscriptSegmentTopicFromJSONTyped(
+  json: any,
+  ignoreDiscriminator: boolean,
+): TranscriptSegmentTopic {
+  if (json === undefined || json === null) {
+    return json;
+  }
+  return {
+    speaker: json["speaker"],
+    text: json["text"],
+    timestamp: json["timestamp"],
+  };
+}
+
+export function TranscriptSegmentTopicToJSON(
+  value?: TranscriptSegmentTopic | null,
+): any {
+  if (value === undefined) {
+    return undefined;
+  }
+  if (value === null) {
+    return null;
+  }
+  return {
+    speaker: value.speaker,
+    text: value.text,
+    timestamp: value.timestamp,
+  };
+}
diff --git a/www/app/api/models/TranscriptTopic.ts b/www/app/api/models/TranscriptTopic.ts
index 8b395374..f22496b2 100644
--- a/www/app/api/models/TranscriptTopic.ts
+++ b/www/app/api/models/TranscriptTopic.ts
@@ -42,13 +42,13 @@ export interface TranscriptTopic {
    * @type {any}
    * @memberof TranscriptTopic
    */
-  transcript?: any | null;
+  timestamp: any | null;
   /**
    *
    * @type {any}
    * @memberof TranscriptTopic
    */
-  timestamp: any | null;
+  segments?: any | null;
 }
 
 /**
@@ -78,8 +78,8 @@ export function TranscriptTopicFromJSONTyped(
     id: !exists(json, "id") ? undefined : json["id"],
     title: json["title"],
     summary: json["summary"],
-    transcript: !exists(json, "transcript") ? undefined : json["transcript"],
     timestamp: json["timestamp"],
+    segments: !exists(json, "segments") ? undefined : json["segments"],
   };
 }
 
@@ -94,7 +94,7 @@ export function TranscriptTopicToJSON(value?: TranscriptTopic | null): any {
     id: value.id,
     title: value.title,
     summary: value.summary,
-    transcript: value.transcript,
     timestamp: value.timestamp,
+    segments: value.segments,
   };
 }
diff --git a/www/app/api/models/index.ts b/www/app/api/models/index.ts
index 99874641..9e691b09 100644
--- a/www/app/api/models/index.ts
+++ b/www/app/api/models/index.ts
@@ -4,10 +4,11 @@ export * from "./AudioWaveform";
 export * from "./CreateTranscript";
 export * from "./DeletionStatus";
 export * from "./GetTranscript";
+export * from "./GetTranscriptSegmentTopic";
+export * from "./GetTranscriptTopic";
 export * from "./HTTPValidationError";
 export * from "./PageGetTranscript";
 export * from "./RtcOffer";
-export * from "./TranscriptTopic";
 export * from "./UpdateTranscript";
 export * from "./UserInfo";
 export * from "./ValidationError";
diff --git a/www/app/lib/utils.ts b/www/app/lib/utils.ts
index db775f07..6b72ddea 100644
--- a/www/app/lib/utils.ts
+++ b/www/app/lib/utils.ts
@@ -1,3 +1,123 @@
 export function isDevelopment() {
   return process.env.NEXT_PUBLIC_ENV === "development";
 }
+
+// Function to calculate WCAG contrast ratio
+export const getContrastRatio = (
+  foreground: [number, number, number],
+  background: [number, number, number],
+) => {
+  const [r1, g1, b1] = foreground;
+  const [r2, g2, b2] = background;
+
+  const lum1 =
+    0.2126 * Math.pow(r1 / 255, 2.2) +
+    0.7152 * Math.pow(g1 / 255, 2.2) +
+    0.0722 * Math.pow(b1 / 255, 2.2);
+  const lum2 =
+    0.2126 * Math.pow(r2 / 255, 2.2) +
+    0.7152 * Math.pow(g2 / 255, 2.2) +
+    0.0722 * Math.pow(b2 / 255, 2.2);
+
+  return (Math.max(lum1, lum2) + 0.05) / (Math.min(lum1, lum2) + 0.05);
+};
+
+// Function to hash string into 32-bit integer
+// 🔴 DO NOT USE FOR CRYPTOGRAPHY PURPOSES 🔴
+
+export function murmurhash3_32_gc(key: string, seed: number = 0) {
+  let remainder, bytes, h1, h1b, c1, c2, k1, i;
+
+  remainder = key.length & 3; // key.length % 4
+  bytes = key.length - remainder;
+  h1 = seed;
+  c1 = 0xcc9e2d51;
+  c2 = 0x1b873593;
+  i = 0;
+
+  while (i < bytes) {
+    k1 =
+      (key.charCodeAt(i) & 0xff) |
+      ((key.charCodeAt(++i) & 0xff) << 8) |
+      ((key.charCodeAt(++i) & 0xff) << 16) |
+      ((key.charCodeAt(++i) & 0xff) << 24);
+
+    ++i;
+
+    k1 =
+      ((k1 & 0xffff) * c1 + ((((k1 >>> 16) * c1) & 0xffff) << 16)) & 0xffffffff;
+    k1 = (k1 << 15) | (k1 >>> 17);
+    k1 =
+      ((k1 & 0xffff) * c2 + ((((k1 >>> 16) * c2) & 0xffff) << 16)) & 0xffffffff;
+
+    h1 ^= k1;
+    h1 = (h1 << 13) | (h1 >>> 19);
+    h1b =
+      ((h1 & 0xffff) * 5 + ((((h1 >>> 16) * 5) & 0xffff) << 16)) & 0xffffffff;
+    h1 = (h1b & 0xffff) + 0x6b64 + ((((h1b >>> 16) + 0xe654) & 0xffff) << 16);
+  }
+
+  k1 = 0;
+
+  switch (remainder) {
+    case 3:
+      k1 ^= (key.charCodeAt(i + 2) & 0xff) << 16;
+    case 2:
+      k1 ^= (key.charCodeAt(i + 1) & 0xff) << 8;
+    case 1:
+      k1 ^= key.charCodeAt(i) & 0xff;
+
+      k1 =
+        ((k1 & 0xffff) * c1 + ((((k1 >>> 16) * c1) & 0xffff) << 16)) &
+        0xffffffff;
+      k1 = (k1 << 15) | (k1 >>> 17);
+      k1 =
+        ((k1 & 0xffff) * c2 + ((((k1 >>> 16) * c2) & 0xffff) << 16)) &
+        0xffffffff;
+      h1 ^= k1;
+  }
+
+  h1 ^= key.length;
+
+  h1 ^= h1 >>> 16;
+  h1 =
+    ((h1 & 0xffff) * 0x85ebca6b +
+      ((((h1 >>> 16) * 0x85ebca6b) & 0xffff) << 16)) &
+    0xffffffff;
+  h1 ^= h1 >>> 13;
+  h1 =
+    ((h1 & 0xffff) * 0xc2b2ae35 +
+      ((((h1 >>> 16) * 0xc2b2ae35) & 0xffff) << 16)) &
+    0xffffffff;
+  h1 ^= h1 >>> 16;
+
+  return h1 >>> 0;
+}
+
+// Generates a color that is guaranteed to have high contrast with the given background color (optional)
+
+export const generateHighContrastColor = (
+  name: string,
+  backgroundColor: [number, number, number] | null = null,
+) => {
+  const hash = murmurhash3_32_gc(name);
+  let red = (hash & 0xff0000) >> 16;
+  let green = (hash & 0x00ff00) >> 8;
+  let blue = hash & 0x0000ff;
+
+  const getCssColor = (red: number, green: number, blue: number) =>
+    `rgb(${red}, ${green}, ${blue})`;
+
+  if (!backgroundColor) return getCssColor(red, green, blue);
+
+  const contrast = getContrastRatio([red, green, blue], backgroundColor);
+
+  // Adjust the color to achieve better contrast if necessary (WCAG recommends at least 4.5:1 for text)
+  if (contrast < 4.5) {
+    red = Math.abs(255 - red);
+    green = Math.abs(255 - green);
+    blue = Math.abs(255 - blue);
+  }
+
+  return getCssColor(red, green, blue);
+};
diff --git a/www/package.json b/www/package.json
index edbc0790..55c7df73 100644
--- a/www/package.json
+++ b/www/package.json
@@ -35,7 +35,7 @@
     "supports-color": "^9.4.0",
     "tailwindcss": "^3.3.2",
     "typescript": "^5.1.6",
-    "wavesurfer.js": "^7.0.3"
+    "wavesurfer.js": "^7.4.2"
   },
   "main": "index.js",
   "repository": "https://github.com/Monadical-SAS/reflector-ui.git",
diff --git a/www/pages/forbidden.tsx b/www/pages/forbidden.tsx
index 31a746fc..ada3d424 100644
--- a/www/pages/forbidden.tsx
+++ b/www/pages/forbidden.tsx
@@ -1,7 +1,7 @@
 import type { NextPage } from "next";
 
 const Forbidden: NextPage = () => {
-  return <h2>Sorry, you are not authorized to access this page.</h2>;
+  return <h2>Sorry, you are not authorized to access this page</h2>;
 };
 
 export default Forbidden;
diff --git a/www/yarn.lock b/www/yarn.lock
index a67822be..8ec03382 100644
--- a/www/yarn.lock
+++ b/www/yarn.lock
@@ -2638,10 +2638,10 @@ watchpack@2.4.0:
     glob-to-regexp "^0.4.1"
     graceful-fs "^4.1.2"
 
-wavesurfer.js@^7.0.3:
-  version "7.0.3"
-  resolved "https://registry.npmjs.org/wavesurfer.js/-/wavesurfer.js-7.0.3.tgz"
-  integrity sha512-gJ3P+Bd3Q4E8qETjjg0pneaVqm2J7jegG2Cc6vqEF5YDDKQ3m8sKsvVfgVhJkacKkO9jFAGDu58Hw4zLr7xD0A==
+wavesurfer.js@^7.4.2:
+  version "7.4.2"
+  resolved "https://registry.yarnpkg.com/wavesurfer.js/-/wavesurfer.js-7.4.2.tgz#59f5c87193d4eeeb199858688ddac1ad7ba86b3a"
+  integrity sha512-4pNQ1porOCUBYBmd2F1TqVuBnB2wBPipaw2qI920zYLuPnada0Rd1CURgh8HRuPGKxijj2iyZDFN2UZwsaEuhA==
 
 wcwidth@>=1.0.1, wcwidth@^1.0.1:
   version "1.0.1"