Convert MKV to MP4

OBS records to MKV by default because the file survives a crash. Editors, phones and chat apps prefer MP4. FeatherCut converts one to the other in your browser.

FreeNo uploadNo watermark
feathercut · studio Ready

01 · Where is the video going

MB

02 · Drop your video

Drop a video hereChoose a video or click to pick a filefrom your gallery or files · MP4, MOV, MKV, WebM, AVI
Before After
Download MP4 ✦
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Processed locally, your file never leaves the device First run downloads the engine (about 32 MB)
How it works

Three steps. A few seconds.

  1. Drop the video

    The file stays on your device. Nothing is uploaded.

  2. We convert to MP4

    High quality, H.264 and AAC, up to 1080p.

  3. Download the MP4

    H.264 + AAC, ready to send or upload.

Tips

OBS recordings and MKV

  • An OBS recording in H.264 up to 1080p at a moderate bitrate is just repackaged into MP4. It takes seconds and changes not a single pixel.
  • OBS also has its own remux option in the File menu. If OBS is at hand, that works just as well. FeatherCut helps when you are on another computer or want a smaller file right away.
  • High-bitrate, 1440p or 4K recordings are re-encoded to 1080p so the file is easy to share and edit.
  • Audio tracks: the MP4 keeps one main audio track.

Updated: October 2026

FAQ

Common questions

Why does OBS record to MKV?

An MKV file can still be read after a sudden crash. An MP4 cut off mid-recording is often unrecoverable.

Does YouTube accept MKV?

Yes, but Discord, WhatsApp, phones and many editors handle it worse. MP4 works everywhere.

What about multiple OBS audio tracks?

The MP4 keeps one main track. If you need separate tracks for editing, keep the original MKV.

See also

More FeatherCut tools

Convert to MP4MOV to MP4Convert to MP4WebM to MP4Compress for a platformDiscordCompress for a platformYouTube Shorts
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