CaptionPipe for ChatGPT

com.captionpipe/captionpipe

One call burns captions into your video. Hosted, prepaid, no subscription. MP4 plus SRT and VTT.

client:ChatGPT transport:streamable-http

Install CaptionPipe in ChatGPT

Settings → Connectors → Advanced → Developer mode

https://api.captionpipe.com/mcp

Custom connectors are a paid-plan feature and take a remote URL only. ChatGPT cannot run a packaged server locally. ChatGPT docs