avi文件封装类，包括avi文件的读写等常用操作，音频视频流等-avi file Packaging categories, including avi file read and write popular operation, streaming audio and video, etc.

这是笔者写的一个小的类，用于把一系列jpeg文件转换为avi。 -This is the author wrote a small category, for the integration of a series of jpeg file conversion to avi.