WMV to AVI Converter
Convert WMV to AVI free — no upload, no signup
To convert WMV to AVI, drop your WMV video into the box below and click Convert. Fylo converts with ffmpeg running inside your browser, so nothing is uploaded and there's no signup or watermark. Convert WMV for players that only read AVI.
Drop videos here
or tap to browse · paste with Ctrl+V · add many at once
Your files never leave your device
If the video already uses codecs that fit the new format, Fylo repackages it instantly with no quality loss.
Advanced
How to convert WMV to AVI
Add your WMV videos
Drag and drop WMV files into the box or tap to choose them. The converter engine (about 31 MB) downloads once, the first time you convert.
Choose quality (optional)
Balanced quality suits most videos. If the codecs already fit AVI, Fylo repackages the file instead of re-encoding it, with no quality loss.
Convert and download
Click Convert, then download each AVI file or all of them as one ZIP.
Why convert WMV to AVI?
Some older DVD players and TVs read Xvid AVI but not WMV.
What happens when you convert WMV to AVI?
Fylo re-encodes to MPEG-4 Part 2 (Xvid) with MP3 audio.
How does Fylo convert WMV to AVI?
Fylo reads the WMV with ffmpeg compiled to WebAssembly and writes MPEG-4 Part 2 tagged as Xvid with MP3 audio — the combination old DVD players and TVs understand. WMV's usual codecs (WMV 7/8/9 (VC-1)) can't go into AVI as-is, so the video is re-encoded. Speed depends on your device: short phone clips take seconds, while on our slow test PC a 2-minute 1080p video took about 10 minutes. Only the first video and audio track are kept, and the original resolution is preserved unless you pick 1080p, 720p or 480p under Advanced.
What's the difference between WMV and AVI?
WMV (Windows Media Video) is a family of Microsoft video codecs introduced in 1999, stored in the Advanced Systems Format (ASF) container together with WMA audio. WMV 9 was standardised as VC-1 and used on HD DVD and early Blu-ray discs.
AVI (Audio Video Interleave) was introduced by Microsoft with Video for Windows in 1992. It's based on the RIFF container used by WAV and stores interleaved chunks of audio and video. In the 2000s, AVI files with DivX or Xvid (MPEG-4 Part 2) video and MP3 audio were the standard for downloaded movies.
Learn more: WMV format guide · AVI format guide
| Property | WMV | AVI |
|---|---|---|
| Developed by | Microsoft | Microsoft |
| Introduced | 1999 | 1992 |
| Typical video codecs | WMV 7/8/9 (VC-1) | MPEG-4 Part 2 (Xvid/DivX), MJPEG |
| Typical audio codecs | WMA | MP3, PCM, AC-3 |
| Plays in web browsers | No | No |
| Compatibility | Windows Media Player, Windows apps; poor on Mac and phones | Windows, VLC, older DVD players and TVs |
| Best for | Old Windows software and PowerPoint presentations | Legacy players, old Windows software |
Frequently asked questions
Will quality drop?
Slightly, as with any re-encode. Pick High quality for important footage.
Is AVI bigger?
Often similar to WMV.
Is my WMV file uploaded to a server?
No. Fylo runs ffmpeg, the same engine used by professional video tools, compiled to WebAssembly inside your browser. Your WMV file is read directly from your device and never sent anywhere.
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