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Narrating over a Video using Multimodal AI

by Jimleukadapted from n8n official workflow galleryUpdated Aug 2026
RequiresBBasic LLM ChainCCodeEdit ImageEdit ImageGoogle DriveGoogle DriveHTTP RequestHTTP RequestOpenAIOpenAI Chat ModelOpenAI Chat Model
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OpenAI Chat ModelOpenAI Chat Mod…CoCapture FramesSOSplit Out FramesHRDownload VideoCTConvert to BinaryConvert to Bina…MaWhen clicking ‘Test workflow’When clicking ‘…AgCombine ScriptUpload to GDriveWaStay Within Service LimitsStay Within Ser…SIFor Every 15 FramesFor Every 15 Fr…EIResize FrameAgAggregate FramesUse Text-to-SpeechUse Text-to-Spe…CLGenerate Narration ScriptGenerate Narrat…1234567891011121314
1/5
STEPS · 14
Run manually by an operator

This n8n template takes a video and extracts frames from it which are used with a multimodal LLM to generate a script. The script is then passed to the same multimodal LLM to generate a voiceover clip. This template was inspired by Processing and narrating a video with GPT's visual capabilities and the TTS API How it works Video is downloaded using the HTTP node. Python code node is used to extract the frames using OpenCV. Loop node is used o batch the frames for the LLM to generate partial scripts. All partial scripts are combined to form the full script which is then sent to OpenAI to generate audio from it. The finished voiceover clip is uploaded to Google Drive. Sample the finished product here: https://drive.google.com/file/d/1-XCoii0leGB2MffBMPpCZoxboVyeyeIX/view?usp=sharing Requirements OpenAI for LLM Ideally, a mid-range (16GB RAM) machine for acceptable performance! Customising this workflow For larger videos, consider splitting into smaller clips for better performance Use a multimodal LLM which supports fully video such as Google's Gemini.

Tags

n8nreference-onlychain-llmedit-imagegoogle-drivelm-chat-open-aiopen-ai
Connects
BBasic LLM ChainCCodeeditimageEdit ImagegoogledriveGoogle DriveWHTTP RequestOpenAI
CategoryAI Automation
Triggermanual
Complexitycomplex
Nodes14
AddedOct 17, 2024

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