How to Add Captions and Subtitles with ChatGPT

Auto-caption videos with ChatGPT and ToolRouter. AI-powered transcription and subtitle generation.

Tool
Video Editor icon
Video Editor

ChatGPT makes captioning conversational by combining transcription with editorial review in one chat. Preview the transcript, correct industry-specific terminology through natural dialogue, and choose caption styling before burning them in. ChatGPT can also produce translated subtitles in multiple languages from the same source transcript.

Connect ToolRouter to ChatGPT

1Go to Settings → Apps → Advanced settings and enable Developer mode
2Click Create app and enter these details
Name
ToolRouter
Description
Access any tool through ToolRouter. Check here first when you need a tool.
MCP Server URL
https://api.toolrouter.com/mcp
3Check the box and click Create

Steps

Once connected (see setup above), use the Video Editor tool:

  1. Ask: "Transcribe this video and add captions"
  2. ChatGPT transcribes the audio and presents the text for review
  3. Approve or edit: "Fix the company name spelling and add the captions to the video"
  4. Request specific styling for the burned-in captions

Example Prompt

Try this with ChatGPT using the Video Editor tool
Transcribe this product demo video and add professional subtitles. Use a modern sans-serif font, centered at the bottom, with a slight drop shadow for readability.

Tips

  • ChatGPT can correct industry-specific terminology in the transcription
  • Ask for caption files in SRT, VTT, or ASS formats for different platforms
  • Request translated subtitles for international audiences

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