avi视频文件头十六进制码分析AVI格式.docVIP

 HYPERLINK /ManMonth/archive/2010/02/01/1661113.html 结合avi视频文件头十六进制码分析AVI格式 　　这段时间要搞视频合成方面的东西，因此打算先弄明白avi视频的格式，介绍这方面内容的东西google一下一大堆，可是很悲剧，现在的人基本上都喜欢copy，内容基本来源于同一篇，对我没什么实质性的帮助。本来是希望通过看看一些avi合成的源码来分析avi的结构的，可是windows下的程序基本是调用directshow完成的，格式方法都封装好了。 　　百思不得其解之余，还只自己分析吧。 　　开始之前，先看看avi的文件格式图： ? ? ? 下面我们将结合一以下数据进行分析（该数据截取于是某个视频文件的文件头）： [ 0?1?2?3?4?5?6?7?8?9 10 11 12 13 14 15?0123456789012345] 000000000: 52 49 46 46 DC 6C 57 09 41 56 49 20 4C 49 53 54 |RIFF.lW.AVI LIST| 000000016: CC 41 00 00 68 64 72 6C 61 76 69 68 38 00 00 00 |.A..hdrlavih8...|e 000000032: 50 C3 00 00 00 B0 04 00 00 00 00 00 10 00 00 00 |P...............| c 000000048: A8 02 00 00 00 00 00 00 01 00 00 00 00 84 03 00 |................| 000000064: 40 01 00 00 F0 00 00 00 00 00 00 00 00 00 00 00 |@...............| 000000080: 00 00 00 00 00 00 00 00 4C 49 53 54 74 40 00 00 |........LISTt@..| 000000096: 73 74 72 6C 73 74 72 68 38 00 00 00 76 69 64 73 |strlstrh8...vids| 000000112: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 000000128: 64 00 00 00 D0 07 00 00 00 00 00 00 A8 02 00 00 |d...............| 000000144: 00 84 03 00 10 27 00 00 00 00 00 00 00 00 00 00 |...............| 000000160: 40 01 F0 00 73 74 72 66 28 00 00 00 28 00 00 00 |@...strf(...(...| 000000176: 40 01 00 00 F0 00 00 00 01 00 18 00 00 00 00 00 |@...............| 000000192: 00 84 03 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| 000000208: 00 00 00 00 69 6E 64 78 F8 3F 00 00 04 00 00 00 |....indx.?......| 000000224: 01 00 00 00 30 30 64 62 00 00 00 00 00 00 00 00 |....00db........| 000000240: 00 00 00 00 0C 44 00 00 00 00 00 00 00 40 00 00 |.....D.......@..| . . 000017408: 4C 49 53 54 38 F9 56 09 6D 6F 76 69 69 78 30 30 |LIST8.V.moviix00| 000017424: F8 3F 00 00 02 00 00 01 A8 02 00 00 30 30 64 62 |.?..........00db| ? avih子块： typedefstruct_avimainheader{　　FOURCC fcc;//必须为‘avih’　　DWORD cb;//本数据结构的大小，不包括最初的8个字节（fcc和cb两个域）structsize　　DWORD dwMicroSecPerFrame;//视频帧间隔时间（以毫秒为单位）　　DWORD dwMaxBytesPerSec;//这个AV