Dear Admin and Members,

This is the first time i am using this mailing list to post my query related to 
ffmpeg. I am a software developer using ffmpeg libs for playing the mediafiles. 
I am trying to demux an .mpg file using ffmpeg demuxer. This is a file which 
has mpeg video and Dolby digital audio and can be played through VLC player. 
When i try to denux it using ffmpeg and try to get the stream info using 
av_find_stream_info() api of libavformat, it fails and returns -5. When i try 
to debug further, i found out that it calls av_read_frame_internal which 
further calls av_read_packet. This function calls a function pointer 
read_packet. It fails and returns -5. Can somebody suggest the possible reason 
for this failure. Also wanna know the mapping of function pointer read_packet 
to the actual function. Please help

regards
Ankit Singhal
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