Automatic Video Captions

Transcribe speech on your device and burn styled captions into your video.

Free · no signup · your files stay on your device.

Choose a videoor drop a file here

Speech in the video is transcribed on your device, then the captions are burned in — also locally. Clips up to 5 minutes are supported.

Runs locally in a Web Worker. One-time ~77 MB model download, cached for next time. Your file never leaves your device.

How to use Automatic Video Captions

1
Choose your video. Drop it on the picker or browse — the audio never leaves your device.
2
Generate and review the captions. Pick the spoken language to transcribe, then review and edit the timed captions it produces.
3
Style and export the video. Set the position, size, text color and background bar, then export the video with the captions burned in.

Place styled text on a video for a specific start and end time, and export the result.

Check the exact duration, size and dimensions of a video, audio file or image.

Place a still image such as a logo over a video, with full control of position, size and timing.

Adjust the brightness, contrast and saturation of a video, and export the corrected file.