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<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif; "><div>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.</div><div>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:</div><div>$ ffmpeg -i udp://232.X.X.X:PORT?sources=172.31.2.22 -vcodec yuv4 -acodec pcm_s16le -f mpegts -y /dev/null</div><div><br></div><div>After about 6 hours of decoding, I start getting errors (I don't know if the stream frame rate really changed or not):</div><div><br></div><div><div>[h264 @ 0x16c5700] Missing reference picture, default is 0</div><div>[h264 @ 0x16c5700] decode_slice_header error</div><div>[h264 @ 0x16cbfc0] Missing reference picture, default is 65556</div><div>[h264 @ 0x1cfc220] reference picture missing during reorder</div><div> Last message repeated 1 times</div><div>[h264 @ 0x1cfc220] Missing reference picture, default is 65556</div><div> Last message repeated 1 times</div><div>[h264 @ 0x1cfc680] mmco: unref short failure</div><div>[h264 @ 0x172ef60] reference picture missing during reorder</div><div>[h264 @ 0x172ef60] Missing reference picture, default is 65564</div><div>[h264 @ 0x172f7e0] mmco: unref short failure</div><div>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</div><div>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)</div><div>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</div><div>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)</div><div>PES packet size mismatch.0 size=1807996058kB time=06:46:03.03 bitrate=607933.3kbits/s dup=77714 drop=0</div><div>[ac3 @ 0x16d47a0] frame CRC mismatch</div><div>[ac3 @ 0x16d47a0] frame sync error</div><div>Error while decoding stream #0:1: Operation not permitted</div><div>[h264 @ 0x1730080] cabac decode of qscale diff failed at 81 39</div><div>[h264 @ 0x1730080] error while decoding MB 81 39, bytestream (34312)</div><div>[h264 @ 0x1730080] concealing 2578 DC, 2578 AC, 2578 MV errors in B frame</div><div>[h264 @ 0x17311c0] Reference 2 >= 2</div><div>[h264 @ 0x17311c0] error while decoding MB 0 19, bytestream (32490)</div><div>[h264 @ 0x17311c0] concealing 4459 DC, 4459 AC, 4459 MV errors in B frame</div><div>[ac3 @ 0x16d47a0] frame CRC mismatch</div><div>[ac3 @ 0x16d47a0] frame sync error</div><div>Error while decoding stream #0:1: Operation not permitted</div><div>[ac3 @ 0x16d47a0] frame CRC mismatch</div><div>[h264 @ 0x1730920] concealing 1989 DC, 1989 AC, 1989 MV errors in B frame</div><div>[h264 @ 0x1731a60] concealing 5111 DC, 5111 AC, 5111 MV errors in B frame</div><div>[h264 @ 0x1732300] Reference 3 >= 2</div><div>[h264 @ 0x1732300] error while decoding MB 88 1, bytestream (72952)</div><div>[h264 @ 0x1732300] concealing 5991 DC, 5991 AC, 5991 MV errors in P frame</div><div>[ac3 @ 0x16d47a0] frame sync error</div><div>Error while decoding stream #0:1: Operation not permitted</div><div>illegal short term buffer state detected28kB</div></div><div>…</div><div><br></div></body></html>