gaca源码，多用于mp4格式的文件。编译可产生一些重要的库。-gaca source, then no time for the multi-format document. Compiler can produce some major libraries.

详细解析mp4文件的格式，包括头文件，各类压缩模块-describe Mp4 file format in details

IOS中，H264视频编码的avi文件转mp4文件格式。-In IOS，change avi file to mp4 file with H64 video encode.

基于赫夫曼树的压缩算法 二进制读入文件，对txt有较好压缩效果，而对MP4、pdf等已经被处理过的文件格式效果不不明显。但是是初学者很好的学习资料。(The compression algorithm based on Huffman tree Binary read into the file, TXT has a better compression effect, and MP4, PDF has been processed file format effect is not not