Hi I am trying to dump a h.264 1080i source stream into raw bitstream file, the stream plays fine on mplayer over rtsp. However when I dump the video stream using -dumpvideo and -umpfile mplayer can't play it back. It looks like the bitstream only has one IDR frame (00 00 00 01 65) and no other NALU like sps/pps and mplayer complains about not finding them. But the rtsp stream version works flawlessly. If I look at the wireshark trace, I see that the stream starts with the rtp payload
0x7c 85 88 84 ..very first rtp packet 0x7c05d34f ... 2nd rtp packet ::::: ::::: 0x7c457c1ff being the last one in the gop (marker bit set) i think thats an idr frame.. the subsequent frames rtp payloads are: 5c819a20 first RTP paket of 2nd frame (possibly a p frame? ) 5c01ff37 2nd RTP packet : 534172c4 last RTP of 2nd frame and mrkar set roughly about 35 frames of type 5c81 .. 5c01 .. 5c41 's then it repeats with 7c858884 etc etc etc Anybody have any clue how to interprete these nalu headers in terms of anex b style bitstream? why would mplayer only convert the first IDR and not the other ones ? Is there anything missing from the subsequent IDR frames? Where are the SPS and PPS? thnx
_______________________________________________ live-devel mailing list live-devel@lists.live555.com http://lists.live555.com/mailman/listinfo/live-devel
