MKV to MP4
Change MKV to MP4 and keep the quality you need. Free for up to 10 files a day, no sign-up.
Your files
Drop your .mkv files here
or
You can add several files and convert them together.
How to convert MKV to MP4
MKV files often won't play on phones, TVs, in browsers or video editors. Converting to MP4 makes them work almost everywhere.
- Drop your MKV file into the box above, or add it from a link.
- MP4 is already selected. Use the settings button next to it to change size, quality or other options.
- Select Convert, then download your MP4 file.
To do this from your own code, call the FileForge API with "output_format": "mp4".
Good to know
- The first video and audio tracks are converted; extra audio languages and subtitle tracks aren't carried over.
- Video is encoded as H.264, which every device supports.
- Lowering the resolution makes the file much smaller for phones.
About the formats
.mkv
MKV (Matroska) is a flexible video container that can hold many audio and subtitle tracks. It's popular for films and recordings, but phones, browsers and editing apps often won't play it.
.mp4
MP4 is the most widely supported video format. It plays on practically every phone, browser, TV and editor, usually with H.264 video and AAC audio inside.
Questions
Will my subtitles be kept?
Embedded subtitle tracks aren't copied to the MP4. Keep the MKV if you need them, or use a separate .srt file with your player.
Why won't my TV play MKV?
Many TVs and phones support MKV poorly or not at all, while MP4 is supported by practically every device.
Are my files kept?
Your files are uploaded over HTTPS to a private link only you have. Originals and results are deleted automatically after 24 hours, or straight away when you remove them.