Upload a MKV file and download a AVI. Free, no account, no watermark, and nothing is kept on our server.
Drag and drop a video file here
or
3GP · AVI · FLV · M4V · MKV · MOV · MP4 · MPEG · MPG · MTS · OGV · TS · WEBM · WMV · Maks 2 GB
Playing a modern download on genuinely old hardware.
Matroska is the most capable container there is: unlimited audio tracks, subtitles, chapters and any codec you like, all under an open licence. Its weakness is playback support - iPhones, iPads and most smart TVs will not touch it, which is why so many MKV files end up as MP4.
AVI dates from Windows 3.1 and shows its age. It has no proper support for modern subtitles, variable frame rates or efficient codecs, so the same footage takes far more space than in MP4. It survives because some editing suites, camcorders and TV sets still expect it.
| MKV | AVI | |
|---|---|---|
| Released | 2002 | 1992 |
| Developed by | Matroska project (open) | Microsoft |
| Type | Container | Container |
| Usual codecs | Any, including H.265 and multiple tracks | Almost anything, often old |
| File size | Same as its codec | Large |
| Best suited to | Films with subtitles and several audio tracks | Old software and hardware |
| Support | Good on desktop, poor on Apple and TVs | Wide but dated |
The video and the main audio track come across normally. What can be left behind is everything MKV is good at: additional audio languages, embedded subtitles and chapter marks, because AVI has far less room for them.
Video takes real time. A short clip finishes in under a minute, while a full-length film can take considerably longer, because every frame has to be decoded and encoded again. Uploading a large file is usually the slowest part of all.
Your file is uploaded to our server because the conversion runs there. A cleanup task runs every hour and deletes anything older than an hour, so nothing you upload survives more than about two hours. We do not open your files, we do not keep copies, and no account is needed to use the converter.