irfan saeed This workflow corresponds to n8n.io template #3450 — we link there as the canonical source.
This workflow follows the Chainllm → HTTP Request recipe pattern — see all workflows that pair these two integrations.
The workflow JSON
Copy or download the full n8n JSON below. Paste it into a new n8n workflow, add your credentials, activate. Full import guide →
{
"id": "SCUbdpVPX4USbQmr",
"meta": {
"templateCredsSetupCompleted": true
},
"name": "youtube chapter generator",
"tags": [
{
"id": "637Ga13eORejFbTG",
"name": "youtube",
"createdAt": "2025-04-06T16:41:11.086Z",
"updatedAt": "2025-04-06T16:41:11.086Z"
},
{
"id": "tfcUyZ2pGsRZFcje",
"name": "chapters",
"createdAt": "2025-04-06T16:41:28.633Z",
"updatedAt": "2025-04-06T16:41:28.633Z"
}
],
"nodes": [
{
"id": "104fa4ce-cd86-4fff-b31c-0ef37fba6d93",
"name": "When clicking \u2018Test workflow\u2019",
"type": "n8n-nodes-base.manualTrigger",
"position": [
-800,
-120
],
"parameters": {},
"typeVersion": 1
},
{
"id": "c3b45480-3098-40f9-a77f-ada54481b590",
"name": "Get Caption ID",
"type": "n8n-nodes-base.httpRequest",
"position": [
-200,
-120
],
"parameters": {
"url": "=https://www.googleapis.com/youtube/v3/captions?part=snippet&videoId={{ $json.id }}",
"options": {},
"authentication": "predefinedCredentialType",
"nodeCredentialType": "youTubeOAuth2Api"
},
"credentials": {
"youTubeOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "fe08adc4-e6ef-47ae-a946-1e6d5a85e10e",
"name": "Get Captions",
"type": "n8n-nodes-base.httpRequest",
"position": [
20,
-120
],
"parameters": {
"url": "=https://www.googleapis.com/youtube/v3/captions/{{ $json.items[0].id }}?tfmt=srt",
"options": {},
"authentication": "predefinedCredentialType",
"nodeCredentialType": "youTubeOAuth2Api"
},
"credentials": {
"youTubeOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 4.2
},
{
"id": "0e15f334-9ff8-4a7e-85a9-4cf8cf10ea55",
"name": "Extract Captions",
"type": "n8n-nodes-base.extractFromFile",
"position": [
240,
-120
],
"parameters": {
"options": {},
"operation": "text"
},
"typeVersion": 1
},
{
"id": "af99a919-7ebc-4a6c-80be-83e2ffa68d05",
"name": "Structured Captions",
"type": "@n8n/n8n-nodes-langchain.outputParserStructured",
"position": [
640,
100
],
"parameters": {
"jsonSchemaExample": "{\n\t\"description\": \"California\"\n\t\n}"
},
"typeVersion": 1.2
},
{
"id": "414a41a2-0715-4a57-a606-9f3678b2472a",
"name": "Get Video Meta Data",
"type": "n8n-nodes-base.youTube",
"position": [
-420,
-120
],
"parameters": {
"options": {},
"videoId": "={{ $json.video_id }}",
"resource": "video",
"operation": "get"
},
"credentials": {
"youTubeOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "7304d9b1-5956-41c3-b78a-2c409d0aa726",
"name": "Google Gemini Chat Model",
"type": "@n8n/n8n-nodes-langchain.lmChatGoogleGemini",
"position": [
460,
100
],
"parameters": {
"options": {},
"modelName": "models/gemini-1.5-flash-8b-exp-0924"
},
"credentials": {
"googlePalmApi": {
"name": "<your credential>"
}
},
"typeVersion": 1
},
{
"id": "867a6ad6-0712-4fbf-97fd-ab054b783172",
"name": "Set Video ID",
"type": "n8n-nodes-base.set",
"position": [
-640,
-120
],
"parameters": {
"options": {},
"assignments": {
"assignments": [
{
"id": "568762f7-e496-4550-8567-d49e2ce1676d",
"name": "video_id",
"type": "string",
"value": "r1wqsrW2vmE"
}
]
}
},
"typeVersion": 3.4
},
{
"id": "dcd0c9d7-1a69-45e8-98e9-b7cf7d12734e",
"name": "Update Chapters",
"type": "n8n-nodes-base.youTube",
"position": [
940,
-120
],
"parameters": {
"title": "={{ $('Get Video Meta Data').item.json.snippet.title }}",
"videoId": "={{ $('Get Captions').item.json.items[0].snippet.videoId }}",
"resource": "video",
"operation": "update",
"categoryId": "22",
"regionCode": "US",
"updateFields": {
"description": "={{ $json.output.description }}\nChapters\n{{ $json.output.description }}"
}
},
"credentials": {
"youTubeOAuth2Api": {
"name": "<your credential>"
}
},
"typeVersion": 1,
"alwaysOutputData": true
},
{
"id": "916629c4-6e49-4432-88e8-626748cb3d24",
"name": "Tag Chapters in Description",
"type": "@n8n/n8n-nodes-langchain.chainLlm",
"position": [
460,
-120
],
"parameters": {
"text": "=This is an srt format data. please classify this data into chapters\nbased upon this transcript \n{{ $json.data }}\n{\n\"description\":\"00:00 Introduction\n02:15 Topic One\n05:30 Topic Two\n10:45 Conclusion\"\n}\n",
"promptType": "define",
"hasOutputParser": true
},
"typeVersion": 1.6
},
{
"id": "b0f56d68-b787-4ccc-8bb5-bdb5b04c3ae4",
"name": "Sticky Note",
"type": "n8n-nodes-base.stickyNote",
"position": [
-680,
-200
],
"parameters": {
"width": 1040,
"height": 440,
"content": "\n## Get Captions"
},
"typeVersion": 1
},
{
"id": "0bcee6b5-0e8b-4f85-8f83-c829e785467a",
"name": "Sticky Note1",
"type": "n8n-nodes-base.stickyNote",
"position": [
378,
-200
],
"parameters": {
"color": 4,
"width": 420,
"height": 440,
"content": "## Generate Chapters\n"
},
"typeVersion": 1
},
{
"id": "0f90f6ec-2154-4945-b262-6531fef2334f",
"name": "Sticky Note2",
"type": "n8n-nodes-base.stickyNote",
"position": [
820,
-200
],
"parameters": {
"color": 6,
"width": 440,
"height": 440,
"content": "## Update Description\n"
},
"typeVersion": 1
}
],
"active": false,
"settings": {
"executionOrder": "v1"
},
"versionId": "27125160-7c64-4431-b243-832c1ae29d29",
"connections": {
"Get Captions": {
"main": [
[
{
"node": "Extract Captions",
"type": "main",
"index": 0
}
]
]
},
"Set Video ID": {
"main": [
[
{
"node": "Get Video Meta Data",
"type": "main",
"index": 0
}
]
]
},
"Get Caption ID": {
"main": [
[
{
"node": "Get Captions",
"type": "main",
"index": 0
}
]
]
},
"Extract Captions": {
"main": [
[
{
"node": "Tag Chapters in Description",
"type": "main",
"index": 0
}
]
]
},
"Get Video Meta Data": {
"main": [
[
{
"node": "Get Caption ID",
"type": "main",
"index": 0
}
]
]
},
"Structured Captions": {
"ai_outputParser": [
[
{
"node": "Tag Chapters in Description",
"type": "ai_outputParser",
"index": 0
}
]
]
},
"Google Gemini Chat Model": {
"ai_languageModel": [
[
{
"node": "Tag Chapters in Description",
"type": "ai_languageModel",
"index": 0
}
]
]
},
"Tag Chapters in Description": {
"main": [
[
{
"node": "Update Chapters",
"type": "main",
"index": 0
}
]
]
},
"When clicking \u2018Test workflow\u2019": {
"main": [
[
{
"node": "Set Video ID",
"type": "main",
"index": 0
}
]
]
}
}
}
Credentials you'll need
Each integration node will prompt for credentials when you import. We strip credential IDs before publishing — you'll add your own.
googlePalmApiyouTubeOAuth2Api
For the full experience including quality scoring and batch install features for each workflow upgrade to Pro
About this workflow
This workflow uses YouTube Data API v3 and Google Gemini 1.5 Flash AI to automatically generate timestamped chapters for videos by analyzing SRT captions. It enhances viewer navigation, improves SEO , and saves creators time by automating manual tasks. Create a Google Cloud…
Source: https://n8n.io/workflows/3450/ — original creator credit. Request a take-down →
Related workflows
Workflows that share integrations, category, or trigger type with this one. All free to copy and import.
It transforms a single text prompt into a fully scripted, visually rich video with AI-generated images and voiceovers, then distributes it across multiple social media platforms. Content Creators & Yo
Content - Newsletter Agent. Uses formTrigger, chainLlm, outputParserStructured, httpRequest. Event-driven trigger; 91 nodes.
Content - Newsletter Agent. Uses formTrigger, chainLlm, outputParserStructured, httpRequest. Event-driven trigger; 87 nodes.
This template attempts to replicate OpenAI's DeepResearch feature which, at time of writing, is only available to their pro subscribers.
My workflow 53. Uses formTrigger, httpRequest, lmChatOpenAi, form. Event-driven trigger; 74 nodes.