Dear All, I am trying to extract the Audio / Video elementary streams from a sample C application using mplayer libraries ( ffmpeg/libmpdemux .. ). I could able to extract the AV streams using mplayer from command as below. #mplayer -dumpaudio -dumpvideo file.mp4. Is there any ffmpeg/any lib APIs can i access to demux the MP4 file from C application ? Please suggest me how can i acheive extration of AV elementary streams only from MP4 container file. Thanks in Advance. Thanks, Anil.V