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Extract subtitles from video

Pull every text track out of an MP4 or MOV as its own .vtt or .srt file, reading the wvtt/tx3g sample tables directly rather than through mediabunny, which can mux a WebVTT track but not read one back. A packet-level read with no decoding, so this runs in Node, the CLI and MCP as well as the browser.

Input

Options

Extract subtitles from video opens an MP4 or MOV container and writes each text track out as a separate VTT or SRT file. It reads the wvtt and tx3g sample tables at the packet level, since the muxer library here writes WebVTT but never parses one back out. Nothing decodes, so it runs the same in Node, the CLI, or MCP.

Questions

What subtitle track formats does it read?

WebVTT tracks, stored as wvtt, and 3GPP Timed Text tracks, stored as tx3g, both muxed directly inside an MP4 or MOV container.

Why does it read the sample tables directly?

Because mediabunny has a writer for WebVTT tracks but no matching reader for getting one back out. Parsing the wvtt and tx3g sample tables by hand is what makes extraction possible here.

What if my video has no embedded text track?

The tool refuses by name, since most video files carry subtitles as a separate .srt or .vtt file rather than muxed inside the container, and there is nothing here to pull out.

Can I choose the output subtitle format?

Yes, vtt or srt, vtt by default. Every text track found is written out separately in the format you pick.

Does this need a browser to run?

No. It is a packet level read with no decoding involved, so it runs in Node, on the command line and through MCP as well as the browser.

Compare

ToolRuns on the CLILive as you type
Extract subtitles from videoYesNo
Watermark videoNoNo
Burn in subtitlesNoNo
Chroma key videoNoNo

Related Video tools

n→nWatermark videoStamp a text watermark onto every frame of a video, in the browser only, like video-convert, because compositing needs a decoded frame from WebCodecs, which Node has no equivalent of. Always outputs MP4.Runs on each file you dropn→1Burn in subtitlesDraw a subtitle track directly onto video frames, permanently. In the browser only, like video-watermark, because compositing needs a decoded frame from WebCodecs, which Node has no equivalent of. Reads SRT, VTT, ASS/SSA or SBV, the same parser the subtitle converters use. Cues whose timing runs past the end of the video are never reached, and reported in the result text rather than as an error. Always outputs MP4.Combines the files you dropn→nChroma key videoRemove a solid background color from a video, frame by frame, replacing it with transparency, a flat color or a black-and-white matte. In the browser only, like video-watermark, because compositing needs a decoded frame from WebCodecs, which Node has no equivalent of.Runs on each file you drop