💬Auto Subtitles
SRT captions for any video, automatically. Free, private, no signup — files never leave your browser.
Speech model downloads once (~40MB), then runs on-device. Works in 99 languages.
Every video, captioned.
Timestamped SRT subtitles generated locally — players pick them up automatically.
How to use Auto Subtitles
Captions without the typing. Drop any video and on-device AI writes timestamped subtitles you can download as SRT — name it like your video and most players pick it up automatically. Nothing is uploaded.
- 1Drop a video file (MP4, WebM, MOV).
- 2Hit Generate subtitles and let the AI listen.
- 3Download the .srt and keep the same filename as your video.
Use cases
What auto subtitles does
- ✓AI transcription of your video’s audio track.
- ✓Timestamped cues ready as standard .srt.
- ✓Auto filename matching tip for one-click player pickup.
- ✓99 languages with auto-detect.
- ✓Private: no uploads, no accounts, no watermarks.
Specs
- Speed
- Roughly real-time, on-device
- Input
- MP4, WebM, MOV
- Output
- Timestamped .srt captions
- Privacy
- On-device AI, zero uploads
- Cost
- Free, unlimited, no signup
Frequently asked questions
Is my video uploaded anywhere?
No. Only the audio track is analyzed, 100% in your browser. Nothing ever leaves your device.
How do I use the SRT file?
Save it next to your video with the identical filename — VLC, YouTube, and most players load it automatically.
Which languages work?
99 languages with auto-detect, including Hindi and English.
Why does the first run take longer?
The speech model (~40MB) downloads once and is cached. Captioning itself runs locally.