MKV to MP4
Convert an MKV container to broadly compatible MP4 for browsers, phones and common editing tools. Video and audio are transcoded into standards that are easier to share when an MKV file is rejected. It is free, needs no account, and adds no watermark to your result.
MKV to MP4
Add your files. Recommended settings are ready, so you can process in one click.
PDF, Word, images, audio, video, archives and more
Up to 100 files · 250 MB · No account- 1Add files
- 2Choose an action
- 3Download or keep going
What people use it for.
What happens to your file.
FFmpeg reads the MKV streams and writes H.264 video with AAC audio in an MP4 container, with fast-start metadata so it can begin playing before it has fully downloaded. Every audio track is carried over, 5.1 surround stays 5.1, and text subtitles such as SRT or ASS are converted into MP4 subtitles. 10-bit and HDR video comes out as 8-bit in standard range, which phones and TVs play.
Where it stops: Image-based subtitles, the PGS and VobSub tracks most film rips carry, cannot go into an MP4 at all and are left out; text subtitles are converted. Conversion re-encodes the media and can reduce quality.
Everything you need, without a paywall.
Common questions.
Why convert MKV to MP4?
MP4 is accepted by more browsers, phones and upload services.
Are subtitles preserved?
Text subtitles (SRT, ASS) are converted into the subtitle format MP4 uses and kept. Image-based subtitles (PGS, VobSub) cannot be stored in an MP4, so they are left out rather than failing the conversion; burn them into the picture in a desktop tool first if you need them.
Can I convert a DRM file?
No. DRM-protected media is not supported.
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