[FFmpeg-trac] #5647(undetermined:new): video freeze with continuos error : cabac decode of qscale diff failed

[FFmpeg]

#5647: video freeze with continuos error : cabac decode of qscale diff failed
-------------------------------------+-------------------------------------
             Reporter:  gentian      |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 I am having errors on ffmpeg when transrating a Multicast/UDP stream from
 HD 1920x1080 to 720x576 profile and outputing again to multicast:

 ./ffmpeg -loglevel error -i
 udp://@234.2.2.1:1234?fifo_size=500000&buffer_size=100000&overrun_nonfatal=1
 -c:v libx264 -preset fast -s 720x576 -bsf:v h264_mp4toannexb -profile:v
 high -sn -flush_packets 0   -f mpegts
 udp://@234.2.2.2:1234?ttl=3&localaddr=10.100.50.66&pkt_size=1316

 After 1 days or sometimes 2 days, very randomly video freezes with half
 image blurred/distorted and freezed while sound is ok. on the console i
 see this errors every second, like it enters a loop. I need to restart and
 the process assume fine for another day. CPU and MEM of the process are
 ok.

 [h264 @ 0xbdcbae0] error while decoding MB 98 35, bytestream 16242
 [h264 @ 0xb3c8a00] Reference 5 >= 4
 [h264 @ 0xb3c8a00] error while decoding MB 54 14, bytestream 21837
 [h264 @ 0xc7e5ce0] cabac decode of qscale diff failed at 54 34
 [h264 @ 0xc7e5ce0] error while decoding MB 54 34, bytestream 10772
 [h264 @ 0xb3c8a00] Reference 2 >= 2
 [h264 @ 0xb3c8a00] error while decoding MB 73 56, bytestream 1577
 [h264 @ 0xb3c8a00] Reference 4 >= 4
 [h264 @ 0xb3c8a00] error while decoding MB 44 22, bytestream 42118
 [h264 @ 0x81ecf80] Reference 2 >= 2
 [h264 @ 0x81ecf80] error while decoding MB 16 15, bytestream 10029

 I have seen same problem opened from another user on Libav bug tracker:
 https://bugzilla.libav.org/show_bug.cgi?id=920

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5647>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker