Pull an already-embedded subtitle track out of a video file as a standalone SRT or VTT file - locally, no upload.
Running locally on your device ...
Running locally on your device ...
0%
Your files never left your device
No. Everything runs in your browser - your file never leaves your device. How this is verifiable
An MKV rip with embedded subtitles, an archived video from an editing program that exported the subtitle track along with it, or an MP4 file with an embedded closed-captions track - this tool pulls exactly that already-existing track out and hands it to you as a standalone SRT or VTT file, instead of leaving it locked inside the container.
Important and honest: this tool only EXTRACTS an already-embedded track - it recognizes no spoken words and generates no new subtitles. If your file has no subtitle track at all, the tool honestly says so (instead of producing an empty or wrong file) and points to the sibling tool "Convert video to subtitles", which uses real speech recognition (whisper.cpp) to generate new subtitles from the spoken audio. If the file has several subtitle tracks (e.g. several languages), the first one is extracted.
The process runs entirely locally in the browser via ffmpeg.wasm - your video is not uploaded.
| Input formats | MP4, M4V, MOV, MKV, WEBM |
|---|---|
| Auto-conversion | PNG, GIF |
| Output formats | SRT, VTT |
| Batch processing | No |
| Processing | Locally in your browser (WebAssembly) |
| File upload | None |
Limitations: Only extracts an already-embedded track - it recognizes no speech and generates no new subtitles; for a video without a subtitle track, the sibling tool "Convert video to subtitles" (speech recognition) is the right choice instead. With several tracks, only the first is extracted. Image-based subtitle formats (e.g. PGS/DVB from DVD/Blu-ray rips) cannot be converted to text and are honestly refused. One file per run, ~500 MB limit in memory mode (more with browser streaming support).
No, everything runs locally in the browser.
The tool honestly reports that as an error, instead of producing an empty file. Use "Convert video to subtitles" instead for real speech recognition.
No. That tool recognizes spoken words via AI and generates NEW subtitles. This tool only pulls out an ALREADY existing subtitle track.
The first track of the container is extracted - usually the first embedded language.
Video to subtitles · Convert VTT to SRT · Burn in subtitles · Mirror video · Strip video metadata · Normalize volume