Send YouTube transcripts to Slack using AssemblyAI

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1. Workflow Overview

How it works This workflow lets users extract full YouTube video transcripts directly from Slack using n8n and AssemblyAI. When a user submits a YouTube link via a Slack slash command, the workf...

Best for

Document Extraction automation workflows
Multimodal AI automation workflows
advanced n8n builders looking for reusable templates

Tools used

n8n-nodes-base.httprequest, n8n-nodes-base.webhook, n8n-nodes-base.set, n8n-nodes-base.wait, n8n-nodes-base.if, n8n-nodes-base.stickynote, n8n-nodes-base.code, @n8n/n8n-nodes-langchain.openai

Source and attribution

This workflow is cataloged by N8N Workflows and links back to its original n8n.io source page by Marsel Bait.

Original n8n.io source

1.1 Workflow description

Title: Send YouTube transcripts to Slack using AssemblyAI
Workflow name: Send YouTube transcripts to Slack using AssemblyAI

🧠 How it works This workflow lets users extract full YouTube video transcripts directly from Slack using n8n and AssemblyAI.

When a user submits a YouTube link via a Slack slash command, the workflow validates the video duration and converts the video into an audio file. The audio is then sent to AssemblyAI for transcription. Once the transcription is complete, the workflow cleans and formats the transcript for readability and posts the full text back to Slack asynchronously.

⚙️ Features • Triggers from a Slack slash command with a YouTube link • Validates video length before processing (maximum 10 minutes) • Converts YouTube videos to MP3 for transcription • Polls transcription status until completion • Cleans and reformats the transcript for easy reading • Posts the full transcript back to Slack without blocking the command

💡 Use cases & expected outcomes • YouTube lectures or tutorials → Get a full transcript in Slack for reference or note-taking • Podcast or interview videos → Extract spoken content as text for quoting or analysis • Product demos or walkthroughs → Review video content quickly without rewatching

💡 Perfect for • Teams that need quick access to YouTube transcripts inside Slack • Researchers, content creators, and note-takers • Developers learning how to connect Slack, external APIs, and async workflows in n8n

1.2 Logical Blocks

This catalog entry is organized from the workflow JSON. The node-level section below shows the executable blocks available for review before importing the template.

2. Block-by-Block Analysis

Block 1 - Check Video Duration

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 2 - Receive Slack command

Type / Role: n8n-nodes-base.webhook - webhook
Config choices: Version 2.1

Block 3 - Normalize Slack payload

Type / Role: n8n-nodes-base.set - set
Config choices: Version 3.4

Block 4 - Wait for transcription processing

Type / Role: n8n-nodes-base.wait - wait
Config choices: Version 1.1

Block 5 - Is transcription complete?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 6 - Sticky Note16

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 7 - Extract YouTube video ID

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 8 - Parse and validate video duration

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 9 - Is video longer than limit?

Type / Role: n8n-nodes-base.if - if
Config choices: Version 2.2

Block 10 - Send duration error to Slack

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.3

Block 11 - Convert YouTube video to MP3

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 12 - Create transcription job

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 13 - Submit audio for transcription

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 14 - Check transcription status

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 15 - Extract transcript text

Type / Role: n8n-nodes-base.code - code
Config choices: Version 2

Block 16 - Generate AI summary

Type / Role: @n8n/n8n-nodes-langchain.openAi - openAi
Config choices: Version 1.8

Block 17 - Post result to Slack

Type / Role: n8n-nodes-base.httpRequest - httpRequest
Config choices: Version 4.2

Block 18 - Sticky Note

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 19 - Sticky Note1

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 20 - Sticky Note2

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 21 - Sticky Note3

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

Block 22 - Sticky Note4

Type / Role: n8n-nodes-base.stickyNote - stickyNote
Config choices: Version 1

3. Summary Table

Workflow	Send YouTube transcripts to Slack using AssemblyAI
Complexity	advanced
Nodes	22
Categories	Document Extraction, Multimodal AI
Author	Marsel Bait
Published	23 Jan 2026

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

Use the JSON export at /data/workflows/12935/12935.json as the source template for this automation.
2. Import the template into n8n

Open n8n, import the downloaded JSON, and review each node before activating the workflow.
3. Configure credentials and variables

Replace placeholder credentials, API keys, webhook URLs, account IDs, and environment-specific values with your own settings.
4. Test with sample data

Run the workflow manually or in a staging workspace, inspect node output, and confirm downstream systems receive the expected data.
5. Activate and monitor

Enable the workflow only after testing, then monitor executions, errors, and rate limits during the first production runs.

5. General Notes & Resources

Review imported nodes carefully before activation. This catalog entry is intended to help you inspect the workflow structure, understand required services, and find related templates faster.

Node names, credentials, schedules, webhook paths, and external service limits may need adjustment for your workspace.

Download workflow JSON Original n8n.io source Document Extraction workflows Multimodal AI workflows

Frequently asked questions

What does Send YouTube transcripts to Slack using AssemblyAI do?

How it works This workflow lets users extract full YouTube video transcripts directly from Slack using n8n and AssemblyAI. When a user submits a YouTube link via a Slack slash command, the workf...

What do I need before importing this workflow?

Review the workflow JSON, configure any required credentials in n8n, and test the automation in a safe workspace before using it in production.

Can I customize this workflow?

Yes. Use the block-by-block analysis and the downloadable JSON to inspect each node, then adjust credentials, prompts, schedules, filters, or destinations for your Document Extraction, Multimodal AI use case.

Marsel Bait

2 workflows

Nodes

n8n-nodes-base.httprequest n8n-nodes-base.webhook n8n-nodes-base.set n8n-nodes-base.wait n8n-nodes-base.if n8n-nodes-base.stickynote n8n-nodes-base.code @n8n/n8n-nodes-langchain.openai

Complexity

advanced

Published 23 Jan 2026

Likes 0

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Install path: /data/workflows/12935/12935.json

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Send YouTube transcripts to Slack using AssemblyAI

Workflow preview

1. Workflow Overview

Best for

Tools used

Source and attribution

1.1 Workflow description

1.2 Logical Blocks

2. Block-by-Block Analysis

Block 1 - Check Video Duration

Block 2 - Receive Slack command

Block 3 - Normalize Slack payload

Block 4 - Wait for transcription processing

Block 5 - Is transcription complete?

Block 6 - Sticky Note16

Block 7 - Extract YouTube video ID

Block 8 - Parse and validate video duration

Block 9 - Is video longer than limit?

Block 10 - Send duration error to Slack

Block 11 - Convert YouTube video to MP3

Block 12 - Create transcription job

Block 13 - Submit audio for transcription

Block 14 - Check transcription status

Block 15 - Extract transcript text

Block 16 - Generate AI summary

Block 17 - Post result to Slack

Block 18 - Sticky Note

Block 19 - Sticky Note1

Block 20 - Sticky Note2

Block 21 - Sticky Note3

Block 22 - Sticky Note4

3. Summary Table

4. Reproducing the Workflow from Scratch

1. Download the workflow JSON

2. Import the template into n8n

3. Configure credentials and variables

4. Test with sample data

5. Activate and monitor

5. General Notes & Resources

Frequently asked questions