ffmpeg is a very famouse multimedia library.
##There are several sites I think are very helpful for multimedia developer:##
##Today I want to talk how to demux network stream by ffmpeg, the full procedure is as following:
1 register movie container format and codec by calling av_rigister_all()
2 open the network stream by calling ‘av_open_input_stream()’
3 find the stream info by calling ‘av_find_stream_info()’
4 loop all the stream and find audio and video by checking the ‘codec_type’ of each ‘stream(nb_streams)’
5 alloc memory for packet of frame by calling ‘av_init_packet’ or ‘avcodec_alloc_frame’
6 read frame from stream by calling ‘av_read_frame’
7 check the type of stream(audio or video)
8 after read all the frame calling ‘av_close_input_stream’ to close the stream
##if want to do time search,the procedure is as following:
1 call ‘av_seek_frame’ to seek by time or by byte
2 call ‘av_read_frame’ to read packet and do demux and decode
#refer source code:
