AVI to MKV
Drop an AVI from older cameras and Windows software and get an MKV file you can use where AVI won't open.
Your file stays on your device. Nothing is uploaded.
AVI to MKV in three steps
Drop your AVI
Up to 500 MB.
Convert
The file is re-encoded in your browser.
Download the MKV
Ready to play, edit or upload.
AVI vs MKV, in short
AVI is an old Windows video format from the 1990s. Older cameras, screen recorders and archives still produce it, but phones and most websites don't play it.
MKV (Matroska) is a flexible container that can hold several audio and subtitle tracks. OBS and other recorders use it because a recording survives a crash, but phones and many editors don't open it.
The video is re-encoded to H.264 video with AAC sound. That runs on your own device, in the browser, so it takes a while for longer videos.
Frequently
Asked Questions
Does converting AVI to MKV lose quality?
It's re-encoded once, at good quality settings. Most people won't see a difference.
Is the sound kept?
Yes. The audio track comes along with the video.
How long does it take?
It depends on the length: re-encoding in the browser uses one processor core, so expect a minute or more per minute of video.
Is my file uploaded?
No. It's processed in your browser, on your own device, and never leaves it.