[Libav-user] errors decoding h264 transport stream

[David Henry]

Hello – I have been using ffmpeg 0.9-2 to decode h264 source-specific multicast udp transport streams on Ubuntu 12.04.  I don't have any problem with that version.
I recently upgraded to 2.0.1 and now I am getting errors.  Here is an example command-line.  I'm sending to /dev/null so I don't fill the small hard drive:
$ ffmpeg -i udp://232.X.X.X:PORT?sources=172.31.2.22 -vcodec yuv4 -acodec pcm_s16le -f mpegts -y /dev/null

After about 6 hours of decoding, I start getting errors (I don't know if the stream frame rate really changed or not):

[h264 @ 0x16c5700] Missing reference picture, default is 0
[h264 @ 0x16c5700] decode_slice_header error
[h264 @ 0x16cbfc0] Missing reference picture, default is 65556
[h264 @ 0x1cfc220] reference picture missing during reorder
    Last message repeated 1 times
[h264 @ 0x1cfc220] Missing reference picture, default is 65556
    Last message repeated 1 times
[h264 @ 0x1cfc680] mmco: unref short failure
[h264 @ 0x172ef60] reference picture missing during reorder
[h264 @ 0x172ef60] Missing reference picture, default is 65564
[h264 @ 0x172f7e0] mmco: unref short failure
Input stream #0:1 frame changed from rate:48000 fmt:fltp ch:6 chl:5.1(side) to rate:48000 fmt:fltp ch:2 chl:stereo
Input stream #0:1 frame changed from rate:48000 fmt:fltp ch:2 chl:stereo to rate:48000 fmt:fltp ch:6 chl:5.1(side)
Input stream #0:1 frame changed from rate:48000 fmt:fltp ch:6 chl:5.1(side) to rate:48000 fmt:fltp ch:2 chl:stereo
Input stream #0:1 frame changed from rate:48000 fmt:fltp ch:2 chl:stereo to rate:48000 fmt:fltp ch:6 chl:5.1(side)
PES packet size mismatch.0 size=1807996058kB time=06:46:03.03 bitrate=607933.3kbits/s dup=77714 drop=0
[ac3 @ 0x16d47a0] frame CRC mismatch
[ac3 @ 0x16d47a0] frame sync error
Error while decoding stream #0:1: Operation not permitted
[h264 @ 0x1730080] cabac decode of qscale diff failed at 81 39
[h264 @ 0x1730080] error while decoding MB 81 39, bytestream (34312)
[h264 @ 0x1730080] concealing 2578 DC, 2578 AC, 2578 MV errors in B frame
[h264 @ 0x17311c0] Reference 2 >= 2
[h264 @ 0x17311c0] error while decoding MB 0 19, bytestream (32490)
[h264 @ 0x17311c0] concealing 4459 DC, 4459 AC, 4459 MV errors in B frame
[ac3 @ 0x16d47a0] frame CRC mismatch
[ac3 @ 0x16d47a0] frame sync error
Error while decoding stream #0:1: Operation not permitted
[ac3 @ 0x16d47a0] frame CRC mismatch
[h264 @ 0x1730920] concealing 1989 DC, 1989 AC, 1989 MV errors in B frame
[h264 @ 0x1731a60] concealing 5111 DC, 5111 AC, 5111 MV errors in B frame
[h264 @ 0x1732300] Reference 3 >= 2
[h264 @ 0x1732300] error while decoding MB 88 1, bytestream (72952)
[h264 @ 0x1732300] concealing 5991 DC, 5991 AC, 5991 MV errors in P frame
[ac3 @ 0x16d47a0] frame sync error
Error while decoding stream #0:1: Operation not permitted
illegal short term buffer state detected28kB
…

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