Hi, I have exactly the same problem. somebody could solve it?
Em 11 de novembro de 2011 10:22, Johannes Ebersold < johannes.ebers...@dfki.de> escreveu: > Hi, > > i currently implementing an application to receive and decode an H.264 > RTSP stream using libavcodec and libavformat. > > The stream is displayed correctly for small resolutions (e.g. quarter VGA) > but the frames are broken for higher resolutions (e.g. HD). The upper half > of the frame is nicely and correctly displayed, however the lower half is > simply not there and the last line of correct pixels gets interpolated for > the complete lower half of the frame. Additionally, there are some small > artefacts in the upper left corner of the frame. It seems like a > (ring?)buffer is full, the first macroblock is overwritten and the > remaining part of the frame is discarded in order to avoid overwritting > the complete buffer. > > I add some debug output at the end of the mail, it may be helpful. > > The problem may be related to ticket #285 ( > http://ffmpeg.org/trac/ffmpeg/ticket/285), since the errors look exactly > the same. However, the proposed fix (comment 12) did not work and the > "missed x packets" message could not be reproduced. > > This issue also appears if ffplay is used to receive the stream and > appears with ffmpeg version 0.8.5 as well as with the latest git head. > > Thanks for any help and hints :) > > Regards, Johannes > > > Debug Output: > > [rtsp @ 0x13ed8e0] SDP: > v=0 > o=- 1321005425421685 1 IN IP4 172.16.7.100 > s=NetVFB > i=netvfbStream0 > t=0 0 > a=tool:LIVE555 Streaming Media v2011.08.22 > a=type:broadcast > a=control:* > a=range:npt=0- > a=x-qt-text-nam:NetVFB > a=x-qt-text-inf:netvfbStream0 > m=video 0 RTP/AVP 96 > c=IN IP4 0.0.0.0 > b=AS:10000 > a=rtpmap:96 H264/90000 > a=control:track1 > > [rtsp @ 0x13ed8e0] video codec set to: h264 > [rtsp @ 0x13ed8e0] hello state=0 > [h264 @ 0x13f0440] Unsupported bit depth: 0 > [h264 @ 0x13f0440] non-existing PPS referenced > [h264 @ 0x13f0440] non-existing PPS 0 referenced > [h264 @ 0x13f0440] decode_slice_header error > [h264 @ 0x13f0440] no frame! > [h264 @ 0x13f0440] out of range intra chroma pred mode at 45 33 > [h264 @ 0x13f0440] error while decoding MB 45 33 > [h264 @ 0x13f0440] concealing 5044 DC, 5044 AC, 5044 MV errors > [rtsp @ 0x13ed8e0] All info found > [rtsp @ 0x13ed8e0] Estimating duration from bitrate, this may be inaccurate > Input #0, rtsp, from 'rtsp://172.16.7.100:8554/netvfbStream0': > Metadata: > title : NetVFB > comment : netvfbStream0 > Duration: N/A, start: 0.068189, bitrate: N/A > Stream #0.0, 22, 1/90000: Video: h264 (Constrained Baseline), yuv420p, > 1920x1200, 1/50, 41.67 fps, 25 tbr, 90k tbn, 50 tbc > [rtsp @ 0x13ed8e0] hello state=1 > [h264 @ 0x13f0440] Missing reference picture > [h264 @ 0x13f0440] decode_slice_header error > [h264 @ 0x13f0440] concealing 9000 DC, 9000 AC, 9000 MV errors > [h264 @ 0x13f0440] out of range intra chroma pred mode at 45 33 > [h264 @ 0x13f0440] error while decoding MB 45 33 > [h264 @ 0x13f0440] concealing 5044 DC, 5044 AC, 5044 MV errors > [h264 @ 0x13f0440] corrupted macroblock 44 33 (total_coeff=-1) > [h264 @ 0x13f0440] error while decoding MB 44 33 > [h264 @ 0x13f0440] concealing 5045 DC, 5045 AC, 5045 MV errors > [h264 @ 0x13f0440] concealing 5054 DC, 5054 AC, 5054 MV errors > [h264 @ 0x13f0440] Frame num gap 3 1 > [h264 @ 0x13f0440] Frame num gap 2 0 > [h264 @ 0x13f0440] no picture > [h264 @ 0x13f0440] Frame num gap 5 3 > [h264 @ 0x13f0440] out of range intra chroma pred mode at 41 33 > [h264 @ 0x13f0440] error while decoding MB 41 33 > [h264 @ 0x13f0440] concealing 5048 DC, 5048 AC, 5048 MV errors > [h264 @ 0x13f0440] Frame num gap 2 0 > [h264 @ 0x13f0440] Frame num gap 7 5 > [h264 @ 0x13f0440] Invalid level prefix > [h264 @ 0x13f0440] error while decoding MB 49 33 > [h264 @ 0x13f0440] concealing 5040 DC, 5040 AC, 5040 MV errors > [h264 @ 0x13f0440] Frame num gap 2 0 > [h264 @ 0x13f0440] Frame num gap 5 3 > [h264 @ 0x13f0440] out of range intra chroma pred mode at 48 33 > [h264 @ 0x13f0440] error while decoding MB 48 33 > [h264 @ 0x13f0440] concealing 5041 DC, 5041 AC, 5041 MV errors > [h264 @ 0x13f0440] Frame num gap 2 0 > [h264 @ 0x13f0440] corrupted macroblock 46 33 (total_coeff=-1) > [h264 @ 0x13f0440] error while decoding MB 46 33 > [h264 @ 0x13f0440] concealing 5043 DC, 5043 AC, 5043 MV errors > [h264 @ 0x13f0440] Frame num gap 2 0 > [h264 @ 0x13f0440] mb_type 163 in I slice too large at 37 33 > [h264 @ 0x13f0440] error while decoding MB 37 33 > [h264 @ 0x13f0440] concealing 5052 DC, 5052 AC, 5052 MV errors > [h264 @ 0x13f0440] Frame num gap 2 0 > > _______________________________________________ > Libav-user mailing list > Libav-user@ffmpeg.org > http://ffmpeg.org/mailman/listinfo/libav-user >
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