AVI文件标准格式文档

AVI Files

The Microsoft Audio/Video Interleaved (AVI) file format is a RIFF file specification used wit

h applications that capture, edit, and playback audio/video sequences. In general, AVI files co

ntain multiple streams of different types of data. Most AVI sequences will use both audio an

d video streams. A simple variation for an AVI sequence uses video data and does not requir

e an audio stream. Specialized AVI sequences might include a control track or MIDI track as

an additional data stream. The control track could control external devices such as an MCI

videodisc player. The MIDI track could play background music for the sequence. While a spe

• The optional chunks of an AVI file

• Developing routines to write AVI files

er's Guide and Microsoft Windows Multimedia Programmer's Reference.

For additional information about installable compressors and decompressors, see chapter 10, "

Video Compression and Decompression Drivers."

AVI RIFF Form

AVI files use the AVI RIFF form. The AVI RIFF form is identified by the four-character co

le shows the AVI RIFF form expanded with the chunks needed to complete the LIST "hdrl"

The Main AVI Header LIST

ur-character code. The header contains general information about the file, such as the number

has the following data structure defined for it:

es the overall timing for the file.

value indicates the number of bytes per second the system must handle to present an AVI se

Indicates the AVI file is interleaved.

Indicates the AVI file is a specially allocated file used for capturing real-time video.

The AVIF_HASINDEX and AVIF_MUSTUSEINDEX flags applies to files with an index chu

re information on interleaved files, see "Special Information for Interleaved Files."

capture data can be efficiently streamed into the file. If this flag is set, an application shoul

lag is set, applications should not let users duplicate the file or the data in the file.