Format guide
AVI
Audio Video Interleave
AVI is Microsoft's video container from 1992, a workhorse for older Windows software, security camera systems, and legacy editing workflows. The format itself is durable but inefficient compared to MP4: same content takes 2-3× more disk space. Modern video software reads AVI but rarely writes it; converting old AVI archives to MP4 is the standard modernization path.
How to open a AVI file
VLC, every video player, every video editor. Smart TVs and mobile devices may struggle, convert to MP4 if you want to play AVI on a TV.
Primary use
Legacy video, security camera footage, older Windows workflows.
Convert other formats to AVI
Convert AVI to other formats
Looking for something else? Browse the full list of 192 converters.