1Add your video
2Transcribe
In the app, the English & Hindi AI models are built in — nothing to download, transcription runs fully offline. On the web, the model downloads once, then it's cached.
3Review & fix the transcript
Click any caption to edit its text. Timings adjust automatically. Play the video above to preview karaoke.
4Style your captions
5Export video with burned-in captions
MP4 export runs on-device (WebCodecs — built into the app, Chrome and Edge). SRT/VTT work everywhere.
How export works (nerdy details)
Your video is decoded frame-by-frame with WebCodecs, each caption is drawn onto a canvas, and frames are re-encoded to H.264 + AAC into a new MP4 — all locally. Nothing is uploaded.