AVI, or Audio Video Interleave, is a type of multimedia file format. AVI files can include audio and video data within a particular file container. This enables AVI files to support synchronized audio-video playback. Microsoft developed the AVI file format, originally created for the company’s Video for Windows standard.

This file format is supported by all versions of Windows Media Player, including Windows Media Player 7, Windows Media Player for XP, and Windows Media Player 11. Winamp and RealPlayer also support AVI files.

AVI is believed to be one of the most common video file formats in Windows computers. Audio and/or video content compressed using any of the available codecs can be stored within an AVI file.

Video Codecs

There are several video codecs used to create AVI files. These include:

  • DivX Codec;
  • Indeo codec;
  • MJPEG codec; and
  • Cinepak codec.

Audio Codecs

Similarly, there are several audio codecs used in AVI files. These include:

  • Uncompressed Pulse Code Modulation codec or PCM codec; and
  • Mp3 codec.

With the use of specific software, AVI files can be converted to other video file formats such as MPEG, MOV(QuickTime) and ASF.

AVI files can be downloaded from the Internet. There are certain sites enabling visitors to download AVI files and view video content such as movies, TV shows, and music videos. Some online sources offer this service for free while others require payment.