Hi All,
I am quite new to Audio/Video.I am getting raw packets of MPEG, camera board sends raw packets, no protocol (RTP or else...). application reads it using tcp/udp. My first question is, are there multiple frames of I frame,P Frame,B frame in single packet? and after decoding it we will get BMP which we can to render?

I tried example of http://dranger.com/ffmpeg/ffmpegtutorial_all.html but I am getting following error error,

[mpeg2video @ 0x9200330]invalid mb type in P Frame at 2 4
[mpeg2video @ 0x9200330]concealing 220 DC, 220 AC, 220 MV errors
[mpeg2video @ 0x9200330]ac-tex damaged at 11 5
[mpeg2video @ 0x9200330]concealing 200 DC, 200 AC, 200 MV errors
[mpeg2video @ 0x9200330]invalid cbp at 17 3
[mpeg2video @ 0x9200330]concealing 240 DC, 240 AC, 240 MV errors
[mpeg2video @ 0x9200330]ac-tex damaged at 0 4
[mpeg2video @ 0x9200330]concealing 220 DC, 220 AC, 220 MV errors
[mpeg2video @ 0x9200330]slice mismatch
[mpeg2video @ 0x9200330]concealing 200 DC, 200 AC, 200 MV errors
[mpeg2video @ 0x9200330]ac-tex damaged at 7 6
[mpeg2video @ 0x9200330]concealing 180 DC, 180 AC, 180 MV errors
[mpeg2video @ 0x9200330]invalid cbp at 10 7
[mpeg2video @ 0x9200330]concealing 160 DC, 160 AC, 160 MV errors
[mpeg2video @ 0x9200330]ac-tex damaged at 9 7
[mpeg2video @ 0x9200330]concealing 160 DC, 160 AC, 160 MV errors
[mpeg2video @ 0x9200330]ac-tex damaged at 10 2
[mpeg2video @ 0x9200330]concealing 260 DC, 260 AC, 260 MV errors
[mpeg2video @ 0x9200330]ac-tex damaged at 3 6
[mpeg2video @ 0x9200330]concealing 180 DC, 180 AC, 180 MV errors
[mpeg2video @ 0x9200330]ac-tex damaged at 4 7
[mpeg2video @ 0x9200330]concealing 160 DC, 160 AC, 160 MV errors

one solution to this I found is use AVParser I need help how can I use it to get correct frame to pass it to decoder.

I'm pretty clueless about all this, but using vlc I've been able to transcode different camera inputs to other formats. Have you looked into vlc?

Thanks for reply..
Yes VLC is the best player ever I seen, but since I want to code my player I was using ffmpeg. The problem was solved when i used
if(av_read_frame(pFormatContext,&packet))
{
Log(ERROR);
}
I think there is problem with av_read_packet(). Please share the difference between both if any one knows details.