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Subtitle utility

Extract Subtitles from Video

Extract embedded text subtitle tracks from MKV, MP4, MOV, and WebM files locally in your browser.

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, not burned-in subtitles. It runs FFmpeg in the browser and attempts to save the first subtitle stream as a separate subtitle file.

Start by uploading or pasting a supported file (.mkv, .mp4, .mov, .webm, .m4v). Check the sample input if you want to see the expected structure first, then run the conversion or repair step and review the output before downloading it. The tool is designed for quick subtitle jobs where opening a full video editor would be unnecessary.

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 when a video file contains an embedded subtitle stream and you need a separate subtitle file without uploading the video.

  • Extract a text subtitle track from an MKV file.
  • Check whether an MP4 contains an embedded caption stream.
  • Create a separate subtitle file before conversion or cleanup.

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.

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.