What is AVI?
Audio Video Interleave
AVI, or Audio Video Interleave, is a container format created by Microsoft in November 1992. Files in the AVI format can store both video and audio data and allow synchronous audio-video playback. If you are wondering how to open AVI files, see the list of associated programs below.
AVI is a subformat of the Resource Interchange File Format (RIFF). Data within this file type is divided into two blocks. One block stores the video width, height, and frame rate, while the other contains audio and video data. Certain media players may not play the original AVI specification correctly since it doesn’t support modern compression techniques.
Windows Media Player, QuickTime Player, VLC, DivX Player, etc.