Convert avi to mp4
Converted on your device. Files never leave this tab. Output tops out around 2 GB.
Nothing is uploaded
The converter runs inside this page. Cut your network after it loads and it still works.
No account, no daily limit
No sign-up, no daily limit, no watermark, no queue behind other people's files. Batch as many AVI files as you like.
Real MP4 output
Encoded by ffmpeg, the same library the command-line tools use — not a renamed extension.
About AVI
Audio Video Interleave
Microsoft's RIFF-based video container from 1992. It is mostly found in older camera footage and DivX or Xvid files. Convert AVI to MP4 to play old clips on phones and current players, usually at a smaller size.
About MP4
MPEG-4 Part 14
An ISO container standard (ISO/IEC 14496-14) based on Apple's QuickTime format. It usually holds H.264 or H.265 video with AAC audio. Use it when a video has to play on any phone, browser, TV or editing app.