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Dr. Herong Yang, Version 2.14

.AVI File Name Extension - Audio Video Interleave Files

This section describes what is .avi file name extension or Audio Video Interleave file.

.avi is the file name extension for files that stores audio and video data together using the AVI (Audio Video Interleave) format, which was developed in 1992 by Microsoft.

An AVI file actually stores audio and video data under the RIFF (Resource Interchange File Format) container format. In AVI files, audio data and video data are stored next to each other to allow synchronous audio-with-video playback.

Audio data is usually stored in AVI files in uncompressed PCM (Pulse-Code Modulation) format with various parameters. Here are the format parameters of an example AVI file:

Bit Rate: 176.4 kbps
Sample Site: 8 bits
Sample Rate: 22.05 kHz (kilo Hertz)
Number of Channels: 1 (mono)

Video data is usually stored in AVI files in compressed format with various codecs and parameters. Here are the format parameters of an example AVI file:

Frame Rate: 15.000 fps
Resolution: 320x240 pixel
Bit Rate: 926.0 kbps
Codec: ffcvid - Cinepak Video

AVI files are usually generated by audio and video recording devices.

For more information on .avi file name extension, go to Microsoft Web site.

Sections in This Chapter

.MP3 File Name Extension - MP3 Files

.WAV File Name Extension - WAV Files

.WMA File Name Extension - Windows Media Audio Files

.ISO File Name Extension - ISO Files

.DAT File Name Extension - VCD Media Files

.INF File Name Extension - AUTORUN.INF Files

.IFO File Name Extension - DVD Infomation Files

.VOB File Name Extension - DVD Video Object Files

.AVI File Name Extension - Audio Video Interleave Files

.MPG File Name Extension - MPEG Files

Dr. Herong Yang, updated in 2007
.AVI File Name Extension - Audio Video Interleave Files