CaptionCove
Drag an audio or video file into CaptionCove and get an SRT, VTT, or burned-in captioned video back — all on your Mac, nothing uploaded. Built for indie podcasters, YouTubers, and journalists whose source material can't leave the building.
Indie podcasters, YouTubers, and journalists handling sensitive source material who cannot use cloud transcription services
- Drag-drop batch processing of audio/video with local ASR
- SRT/VTT export plus burned-in captioned MP4 rendering
- Speaker-turn detection for interviews and panel shows
- Optional vocabulary hints for names, jargon, and brand terms
Cloud transcription costs are climbing and several high-profile leaks of source material have made privacy-first local ASR a marketable differentiator; indie creators are explicitly searching for Whisper-style desktop tools.
HN traction (27 points) and a clear indie-creator privacy trend support demand, though creator transcription is more price-sensitive than clinical.MacWhisper — AI Transcription App for Mac | Free & Pro ↗
Most current tools (Otter, Rev, Descript) are cloud-first; a polished Mac-native, fully-offline captioner is genuinely undersupplied.MacWhisper — AI Transcription App for Mac | Free & Pro ↗
Creators pay $10-30/mo for Otter/Descript; one-time purchase or $10/mo is plausible but churn risk is higher than clinical.MacWhisper — AI Transcription App for Mac | Free & Pro ↗
Transcription is a multi-decade need; local models only get better, supporting long-term value.
MVP is essentially a clean UI wrapper over an open-source local ASR model with ffmpeg export — shippable in weeks.