MKV AVI
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Convert MKV to AVI

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MKV to AVI converterFREE

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Tested on macOS, Windows & Linux
Last verified Nov 2026

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How to convert MKV to AVI

  1. Add your .MKV file - drop it in the box above or click to browse.
  2. Convert it to .AVI in a few seconds.
  3. Download your new .AVI file.

What to expect

  • Re-encoding to Xvid and MP3 is unavoidable - quality always drops compared to the original MKV.
  • Subtitles, chapters, and extra audio tracks are discarded; AVI supports only one video and one audio stream.
  • The original AVI spec caps files at 4 GB, which can cause playback problems on very old devices.

Frequently asked questions

Does converting MKV to AVI always lose quality?
Yes. AVI cannot carry H.264 or H.265 without re-encoding to an older codec like Xvid, which always reduces quality.
Will my subtitles survive the conversion?
No - AVI has no subtitle track. To keep them visible, burn them into the video using FFmpeg's -vf subtitles=input.mkv filter.
My old TV still won't play the converted AVI - why?
Most AVI-compatible TVs expect Xvid/DivX video at SD resolution with MP3 audio; a 1080p or differently-encoded file may be rejected.
Is there a better alternative to AVI for old-device compatibility?
For most devices made after 2010, MP4 with H.264 and AAC audio works just as well and gives better quality at a smaller file size.