Remux video
Change a compatible video container locally with stream copy, without decoding or re-encoding the audio and video.
Features
- Choose MP4 or WebM as the target container.
- Copy compatible audio and video streams directly.
- Stop with a clear compatibility message when stream copy is unsafe.
How to use this tool
- Choose a supported video file.
- Select MP4 or WebM output.
- Start the remux and download the result.
Good to know
This tool is free without sign-up, with unlimited processing and exports within the displayed input limits.
- Incompatible codecs require the video conversion tool and are never silently re-encoded here.
Privacy and local processing
This tool processes your input in your browser. Source files and text are not uploaded to a FormatOwl processing server. Advanced-tool access and trial balances are checked online using tool IDs, file types, sizes and page counts. Free tools do not require account authorization. Save the results you need before leaving or refreshing the page.
Processing engines, preview resources or fonts may be downloaded from this site when needed. These downloads do not upload your source content.
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