CD-DVD Tutorials - Herong's Tutorial Examples - Version 2.21, by Dr. Herong Yang
.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.
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