This workflow follows the HTTP Request → Postgres 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 →
{
"name": "Video Generation Workflow",
"nodes": [
{
"parameters": {
"httpMethod": "POST",
"path": "video/generate",
"responseMode": "responseNode",
"options": {}
},
"id": "webhook-video-gen",
"name": "Webhook - Generate Video",
"type": "n8n-nodes-base.webhook",
"typeVersion": 1,
"position": [
250,
300
]
},
{
"parameters": {
"operation": "executeQuery",
"query": "SELECT cd.*, c.branding_json FROM content_drafts cd JOIN campaigns c ON cd.campaign_id = c.id WHERE cd.id = {{ $json.body.draft_id }}",
"additionalFields": {}
},
"id": "get-content",
"name": "Get Content Draft",
"type": "n8n-nodes-base.postgres",
"typeVersion": 2,
"position": [
450,
300
],
"credentials": {
"postgres": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"url": "http://langchain-service:8001/chains/video-script-builder",
"method": "POST",
"bodyParametersJson": "={\n \"content\": \"{{ $json.content }}\",\n \"platform\": \"{{ $('Webhook - Generate Video').item.json.body.platform || 'linkedin' }}\",\n \"duration\": {{ $('Webhook - Generate Video').item.json.body.duration || 30 }},\n \"narrative_arc\": {{ $('Webhook - Generate Video').item.json.body.narrative_arc || '[\"hook\", \"context\", \"content\", \"cta\"]' }}\n}",
"options": {}
},
"id": "build-script",
"name": "Build Video Script",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
650,
300
]
},
{
"parameters": {
"jsCode": "// Split scenes for parallel processing\nconst script = $input.item.json;\nconst scenes = script.scenes || [];\n\nreturn scenes.map((scene, index) => ({\n json: {\n scene_number: index + 1,\n ...scene,\n total_scenes: scenes.length,\n draft_id: $('Get Content Draft').item.json.id,\n provider: $('Webhook - Generate Video').item.json.body.provider || 'runway'\n }\n}));"
},
"id": "split-scenes",
"name": "Split into Scenes",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
850,
300
]
},
{
"parameters": {
"conditions": {
"options": {
"caseSensitive": true,
"leftValue": "",
"typeValidation": "strict"
},
"conditions": [
{
"id": "condition-runway",
"leftValue": "={{ $json.provider }}",
"rightValue": "runway",
"operator": {
"type": "string",
"operation": "equals"
}
}
],
"combinator": "and"
},
"options": {}
},
"id": "if-runway",
"name": "If Runway Provider",
"type": "n8n-nodes-base.if",
"typeVersion": 2,
"position": [
1050,
300
]
},
{
"parameters": {
"url": "http://langchain-service:8001/agents/video",
"method": "POST",
"bodyParametersJson": "={\n \"provider\": \"runway\",\n \"prompt\": \"{{ $json.prompt }}\",\n \"duration\": {{ $json.duration }},\n \"aspect_ratio\": \"{{ $('Webhook - Generate Video').item.json.body.aspect_ratio || '16:9' }}\",\n \"motion\": {{ $('Webhook - Generate Video').item.json.body.motion || 5 }}\n}",
"options": {
"timeout": 300000
}
},
"id": "generate-runway",
"name": "Generate with Runway ML",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
1250,
200
]
},
{
"parameters": {
"url": "http://langchain-service:8001/agents/video",
"method": "POST",
"bodyParametersJson": "={\n \"provider\": \"pika\",\n \"prompt\": \"{{ $json.prompt }}\",\n \"duration\": {{ $json.duration }},\n \"fps\": {{ $('Webhook - Generate Video').item.json.body.fps || 24 }},\n \"seed\": {{ $('Webhook - Generate Video').item.json.body.seed || -1 }}\n}",
"options": {
"timeout": 300000
}
},
"id": "generate-pika",
"name": "Generate with Pika",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
1250,
400
]
},
{
"parameters": {
"url": "={{ $json.video_url }}",
"method": "GET",
"options": {
"response": {
"response": {
"responseFormat": "file"
}
}
}
},
"id": "download-clip",
"name": "Download Video Clip",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
1450,
300
]
},
{
"parameters": {
"mode": "combine",
"combinationMode": "mergeByPosition",
"options": {}
},
"id": "collect-clips",
"name": "Collect All Clips",
"type": "n8n-nodes-base.merge",
"typeVersion": 2,
"position": [
1650,
300
]
},
{
"parameters": {
"jsCode": "// Prepare FFmpeg command to stitch clips together\nconst clips = $input.all();\nconst clipPaths = clips.map((clip, i) => `/tmp/scene_${i}.mp4`);\n\n// In production, this would invoke FFmpeg\nconst ffmpegCommand = {\n operation: 'concat',\n inputs: clipPaths,\n output: `/tmp/final_video_${Date.now()}.mp4`,\n options: {\n video_codec: 'libx264',\n audio_codec: 'aac',\n preset: 'medium',\n crf: 23\n }\n};\n\nreturn {\n json: {\n draft_id: clips[0].json.draft_id,\n ffmpeg_command: ffmpegCommand,\n total_clips: clips.length,\n total_duration: clips.reduce((sum, clip) => sum + (clip.json.duration || 0), 0)\n }\n};"
},
"id": "prepare-ffmpeg",
"name": "Prepare FFmpeg Stitching",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
1850,
300
]
},
{
"parameters": {
"url": "http://langchain-service:8001/tools/ffmpeg",
"method": "POST",
"bodyParametersJson": "={{ $json.ffmpeg_command }}",
"options": {
"timeout": 180000
}
},
"id": "stitch-clips",
"name": "Stitch Clips with FFmpeg",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
2050,
300
]
},
{
"parameters": {
"url": "http://langchain-service:8001/tools/ffmpeg/add-captions",
"method": "POST",
"bodyParametersJson": "={\n \"video_path\": \"{{ $json.output_path }}\",\n \"captions\": {{ $('Build Video Script').item.json.voiceover_script }},\n \"font_size\": 24,\n \"font_color\": \"white\",\n \"background_color\": \"rgba(0,0,0,0.7)\",\n \"position\": \"bottom\"\n}",
"options": {}
},
"id": "add-captions",
"name": "Add Captions",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
2050,
450
]
},
{
"parameters": {
"url": "http://langchain-service:8001/tools/ffmpeg/add-audio",
"method": "POST",
"bodyParametersJson": "={\n \"video_path\": \"{{ $json.output_path }}\",\n \"audio_url\": \"{{ $('Webhook - Generate Video').item.json.body.background_music_url }}\",\n \"volume\": {{ $('Webhook - Generate Video').item.json.body.music_volume || 0.3 }}\n}",
"options": {}
},
"id": "add-music",
"name": "Add Background Music",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
2050,
600
]
},
{
"parameters": {
"url": "http://langchain-service:8001/tools/ffmpeg/add-intro-outro",
"method": "POST",
"bodyParametersJson": "={\n \"video_path\": \"{{ $json.output_path }}\",\n \"intro_template\": \"brand_intro\",\n \"outro_template\": \"brand_outro\",\n \"brand_logo\": \"{{ $('Get Content Draft').item.json.branding_json.logo_url }}\",\n \"brand_colors\": {{ $('Get Content Draft').item.json.branding_json.primary_color ? `[\"${$('Get Content Draft').item.json.branding_json.primary_color}\"]` : '[]' }}\n}",
"options": {}
},
"id": "add-intro-outro",
"name": "Add Intro/Outro",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
2250,
400
]
},
{
"parameters": {
"jsCode": "// Create media asset metadata\nconst filename = `video_${Date.now()}_${Math.random().toString(36).substring(7)}.mp4`;\nconst filePath = `/app/media_assets/${filename}`;\n\nconst metadata = {\n draft_id: $('Get Content Draft').item.json.id,\n type: 'video',\n file_path: filePath,\n url: `http://localhost:8000/media/${filename}`,\n prompt: JSON.stringify($('Build Video Script').item.json.scenes),\n api_provider: $('Webhook - Generate Video').item.json.body.provider || 'runway',\n metadata_json: {\n dimensions: {\n width: 1920,\n height: 1080\n },\n duration: $('Prepare FFmpeg Stitching').item.json.total_duration,\n format: 'mp4',\n fps: $('Webhook - Generate Video').item.json.body.fps || 24,\n size_bytes: 0, // Will be updated after file save\n prompt_params: {\n platform: $('Webhook - Generate Video').item.json.body.platform || 'linkedin',\n aspect_ratio: $('Webhook - Generate Video').item.json.body.aspect_ratio || '16:9',\n total_scenes: $('Prepare FFmpeg Stitching').item.json.total_clips\n },\n processing: {\n captions_added: true,\n music_added: !!$('Webhook - Generate Video').item.json.body.background_music_url,\n intro_outro_added: true\n },\n generated_at: new Date().toISOString()\n }\n};\n\nreturn metadata;"
},
"id": "prepare-media-record",
"name": "Prepare Media Asset Record",
"type": "n8n-nodes-base.code",
"typeVersion": 2,
"position": [
2450,
400
]
},
{
"parameters": {
"operation": "insert",
"table": "media_assets",
"columns": "draft_id, type, file_path, url, prompt, api_provider, metadata_json, created_at",
"returnFields": "id, draft_id, url, type",
"additionalFields": {}
},
"id": "save-media",
"name": "Save Media Asset",
"type": "n8n-nodes-base.postgres",
"typeVersion": 2,
"position": [
2650,
400
],
"credentials": {
"postgres": {
"name": "<your credential>"
}
}
},
{
"parameters": {
"url": "http://localhost:5678/webhook/content-review",
"method": "POST",
"bodyParametersJson": "={\n \"draft_id\": {{ $json.draft_id }},\n \"media_asset_id\": {{ $json.id }},\n \"action\": \"video_ready_for_review\",\n \"media_url\": \"{{ $json.url }}\",\n \"media_type\": \"{{ $json.type }}\",\n \"dashboard_url\": \"http://localhost:8501/media_review?asset_id={{ $json.id }}\"\n}",
"options": {}
},
"id": "notify-review",
"name": "Notify Review Dashboard",
"type": "n8n-nodes-base.httpRequest",
"typeVersion": 4,
"position": [
2850,
400
]
},
{
"parameters": {
"respondWith": "json",
"responseBody": "={\n \"success\": true,\n \"message\": \"Video generated successfully\",\n \"asset_id\": {{ $json.id }},\n \"draft_id\": {{ $json.draft_id }},\n \"video_url\": \"{{ $json.url }}\",\n \"provider\": \"{{ $('Webhook - Generate Video').item.json.body.provider || 'runway' }}\",\n \"duration_seconds\": {{ $('Prepare FFmpeg Stitching').item.json.total_duration }},\n \"total_scenes\": {{ $('Prepare FFmpeg Stitching').item.json.total_clips }},\n \"processing_applied\": {\n \"captions\": true,\n \"background_music\": {{ !!$('Webhook - Generate Video').item.json.body.background_music_url }},\n \"intro_outro\": true\n },\n \"status\": \"ready_for_review\",\n \"review_url\": \"http://localhost:8501/media_review?asset_id={{ $json.id }}\"\n}",
"options": {}
},
"id": "response-success",
"name": "Respond Success",
"type": "n8n-nodes-base.respondToWebhook",
"typeVersion": 1,
"position": [
3050,
400
]
}
],
"connections": {
"Webhook - Generate Video": {
"main": [
[
{
"node": "Get Content Draft",
"type": "main",
"index": 0
}
]
]
},
"Get Content Draft": {
"main": [
[
{
"node": "Build Video Script",
"type": "main",
"index": 0
}
]
]
},
"Build Video Script": {
"main": [
[
{
"node": "Split into Scenes",
"type": "main",
"index": 0
}
]
]
},
"Split into Scenes": {
"main": [
[
{
"node": "If Runway Provider",
"type": "main",
"index": 0
}
]
]
},
"If Runway Provider": {
"main": [
[
{
"node": "Generate with Runway ML",
"type": "main",
"index": 0
}
],
[
{
"node": "Generate with Pika",
"type": "main",
"index": 0
}
]
]
},
"Generate with Runway ML": {
"main": [
[
{
"node": "Download Video Clip",
"type": "main",
"index": 0
}
]
]
},
"Generate with Pika": {
"main": [
[
{
"node": "Download Video Clip",
"type": "main",
"index": 0
}
]
]
},
"Download Video Clip": {
"main": [
[
{
"node": "Collect All Clips",
"type": "main",
"index": 0
}
]
]
},
"Collect All Clips": {
"main": [
[
{
"node": "Prepare FFmpeg Stitching",
"type": "main",
"index": 0
}
]
]
},
"Prepare FFmpeg Stitching": {
"main": [
[
{
"node": "Stitch Clips with FFmpeg",
"type": "main",
"index": 0
}
]
]
},
"Stitch Clips with FFmpeg": {
"main": [
[
{
"node": "Add Captions",
"type": "main",
"index": 0
},
{
"node": "Add Background Music",
"type": "main",
"index": 0
}
]
]
},
"Add Captions": {
"main": [
[
{
"node": "Add Intro/Outro",
"type": "main",
"index": 0
}
]
]
},
"Add Background Music": {
"main": [
[
{
"node": "Add Intro/Outro",
"type": "main",
"index": 0
}
]
]
},
"Add Intro/Outro": {
"main": [
[
{
"node": "Prepare Media Asset Record",
"type": "main",
"index": 0
}
]
]
},
"Prepare Media Asset Record": {
"main": [
[
{
"node": "Save Media Asset",
"type": "main",
"index": 0
}
]
]
},
"Save Media Asset": {
"main": [
[
{
"node": "Notify Review Dashboard",
"type": "main",
"index": 0
}
]
]
},
"Notify Review Dashboard": {
"main": [
[
{
"node": "Respond Success",
"type": "main",
"index": 0
}
]
]
}
},
"settings": {
"executionOrder": "v1"
},
"staticData": null,
"tags": [],
"triggerCount": 1,
"updatedAt": "2024-01-15T00:00:00.000Z",
"versionId": "1"
}
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.
postgres
Pro
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About this workflow
Video Generation Workflow. Uses postgres, httpRequest. Webhook trigger; 18 nodes.
Source: https://github.com/Yaakovyitzchak1231/CLAUDE-CODE_Marketing-Agent/blob/a9f11690dfb44a4e0f520ab2cd1436f06b18c442/n8n-workflows/video_generation.json — original creator credit. Request a take-down →
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