微软的音频/视频交错（AVI）文件格式是一种RIFF格式的文件规范与应用，捕捉，编辑使用和播放音频/视频序列。一般情况下，AVI文件包含了不同类型的数据多个流。大多数AVI序列将同时使用音频和视频流。一个简单的AVI序列变异使用视频数据，不需要音频流。专门阿维序列可能包括控制赛道作为额外的数据流或MIDI音轨。控制轨道可以控制，如一个MCI光碟机的外部设备。在MIDI轨道可以发挥的顺序的背景音乐。虽然专门序列需要专门的控制程序，利用它的全部功能，应用程序，可以阅读和发挥阿维序列仍然可以阅读和发挥在专门的AVI文件序列的优势。 （这些应用程序忽略了非专门文件阿维数据。）本章主要介绍AVI文件只包含音频和视频数据。

本章涵盖以下主题：

• 一个AVI文件所需的块

• 一个AVI文件可选的数据块

• 制定程序写入AVI文件

有关RIFF格式文件的其他信息，请参阅Microsoft Windows多媒体程序员指南和Microsoft Windows多媒体程序员参考。

有关安装的压缩机及解压缩的其他信息，请参见第10章“视频压缩和解压驱动程序。”-The Microsoft Audio/Video Interleaved (AVI) file format is a RIFF file specification used with applications that capture, edit, and playback audio/video sequences. In general, AVI files contain multiple streams of different types of data. Most AVI sequences will use both audio and video streams. A simple variation for an AVI sequence uses video data and does not require 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 specialized sequence requires a specialized control program to take advantage of all its capabilities, applications that can read and play AVI sequences can still read and play an AVI sequence in a specialized file. (These applications ignore the non-AVI data in the specialized file.) This chapter primarily describes AVI files containing only audio and vide