MP4 to MKV
Change MP4 to MKV and keep the quality you need. Free for up to 10 files a day, no sign-up.
MP4
Your files
Drop your .mp4 files here
or
You can add several files and convert them together.
How to convert MP4 to MKV
- Drop your MP4 file into the box above, or add it from a link.
- MKV is already selected. Use the settings button next to it to change size, quality or other options.
- Select Convert, then download your MKV file.
To do this from your own code, call the FileForge API with "output_format": "mkv".
About the formats
.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.
.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.