ffmpeg 命令

图片生成mov

ffmpeg -i 1/%d.jpg  -r 5.5   -vcodec mpeg4 1.mov 

avi 生成jpg

ffmpeg -i split.avi example.%d.jpg

http://www.codeios.com/thread-9608-1-1.html   iOS

https://github.com/jayrparro/iFrameExtractor

http://blog.youkuaiyun.com/xufeidll/article/details/7419160