Open the container. Keep only the captions.

Inspect embedded tracks inside MKV, MP4, WebM and MOV files, then extract text subtitles without re-encoding the video.

Track language + title Default + forced flags Native · SRT · WebVTT

Container manifest

feature-film.mkv

4 tracks

Image tracks are identified now; PGS and VobSub OCR routing follows in the next phase.

Media source

Choose one container file

MKV · MP4 · M4V · WEBM · MOV

Drop a movie here or browse Only the selected subtitle streams are exported. Current file limit: 5 GiB

Upload route

Files above 95 MiB use signed 64 MiB chunks through the isolated upload gateway.

Large media bypasses the proxied-request limit. Failed chunks retry without restarting the whole file.

Sources and extracted files expire automatically after 15 minutes.

0% · 0 B Waiting to start

Choose a media file to inspect.

01 · INSPECT

Language, title, codec and forced/default flags come directly from the container manifest.

02 · SELECT

Export one or several text tracks. Converting ASS/SSA to SRT or WebVTT can simplify positioning and styling.

03 · EXTRACT

FFmpeg maps the selected subtitle stream only, reducing processing time and avoiding quality changes to the movie.