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Subtitle utility

Extract Subtitles from Video

Extract embedded text subtitle tracks from MKV, MP4, MOV, and WebM files locally with no video upload.

Free No signup Browser-local

Video input

No signup. No server upload. Browser-only processing.

Choose a video file with embedded subtitles

Runs FFmpeg locally. Text subtitle streams can be extracted; burned-in subtitles cannot.

Selected file: video.mkv

Extracted subtitle output

Runs locally in your browser

Selected file: video.mkv

Workflow notes

How to use this Video extractor tool

This tool is for embedded text subtitle streams in MKV, MP4, MOV, or WebM files, not burned-in subtitles that need OCR. It runs FFmpeg in the browser, keeps the video on your device, and attempts to save the first supported text subtitle stream as a separate subtitle file.

  1. Add a supported subtitle file. Upload or paste a supported subtitle file (.mkv, .mp4, .mov, .webm, .m4v), or load the sample input to see the expected structure.
  2. Run the Video extractor tool. Use the browser-based converter or repair action to process the subtitle file locally on your device.
  3. Review and download the output. Check the first few cues, the middle of the file, and the final cue before copying or downloading the result.

Input and output checklist

  • Use a complete subtitle file with valid cue timing when possible.
  • Keep a copy of the original file before replacing it in your workflow.
  • Review the first few cues, the middle of the file, and the final cue after export.
  • Test the downloaded output in the destination player, editor, or upload form.

Common mistakes to avoid

  • Expecting burned-in subtitles to be extracted as text.
  • Assuming every embedded subtitle stream can be converted to SRT.
  • Uploading a very large video before confirming it actually contains a text subtitle track.

All processing runs in your browser, so the subtitle or video file does not need to be uploaded to a server. That is useful for client review files, unreleased videos, internal training material, and other caption workflows where the text should stay on your device.

When to use this tool

Use this free video subtitle extractor when an MKV, MP4, MOV, or WebM file contains embedded text captions and you need a separate subtitle file without uploading the video.

  • Extract an embedded text subtitle track from an MKV file.
  • Check whether an MP4, MOV, or WebM file contains a caption stream.
  • Create a separate SRT-style subtitle file before conversion, cleanup, or timing repair.
  • Confirm whether subtitles are embedded text tracks instead of burned-in video pixels.

FAQ

Can this extract burned-in subtitles? +

No. Burned-in subtitles are part of the video image and require OCR. This tool extracts embedded text subtitle tracks only.

Can I extract subtitles from MKV or MP4 files? +

Yes, when the video contains an embedded text subtitle stream. MKV files often work best; MP4, MOV, and WebM files work when they include supported text captions.

Does the video upload to a server? +

No. FFmpeg runs in your browser. The video file stays on your device.

Which subtitle track does it extract? +

The tool attempts to extract the first embedded subtitle stream as SRT. If the stream is image-based, conversion may fail.