Reference:
ffmpeg website http://ffmpeg.org/
ffmpeg developer http://ffmpeg.org/developer.html
An ffmpeg and SDL Tutorial http://dranger.com/ffmpeg/ffmpeg.html
Using libavformat and libavcodec http://www.inb.uni-luebeck.de/~boehme/using_libavcodec.html
Using libavformat and libavcodec: An Update http://www.inb.uni-luebeck.de/~boehme/libavcodec_update.html
ffmpeg official wiki http://ffmpeg.org/trac/ffmpeg
mplayer url http://www.mplayerhq.hu/design7/projects.html
SDK之快速入门 http://www.ffmpeg.com.cn/index.php/SDK%E4%B9%8B%E5%BF%AB%E9%80%9F%E5%85%A5%E9%97%A8