[FFmpeg-trac] #5138(avcodec:new): [H264 Decoder] Missing B frame in the H264 decoded stream.

FFmpeg trac at avcodec.org
Thu Jan 7 18:22:13 CET 2016


#5138: [H264 Decoder] Missing B frame in the H264 decoded stream.
-------------------------------------+-------------------------------------
             Reporter:  jbbetton     |                     Type:  defect
               Status:  new          |                 Priority:  important
            Component:  avcodec      |                  Version:  git-
             Keywords:  H264,        |  master
  Decoder, B-Frames                  |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 I use the demuxing_decoding example to decode an H264 stream that contains
 different sizes of sub-GOP (dynamic B-Frames). The first five sub-GOPs
 have 3 B-Frames. The sixth sub-GOP has 7 B-Frames and is not decoded
 correctly.

 How to reproduce:
 {{{
 ./demuxing_decoding CNBC_3B_7B_in.264 CNBC_3B_7B_out.yuv
 CNBC_3B_7B_out.pcm
 ffmpeg version : git-master
 built on CentOS 6.6
 }}}

 Result :
 {{{
 Coded frame 24 is missing. It should be between coded frames 17 and 23.
 }}}

 [[Image(http://i.imgsafe.org/a7d9007.jpg)]]

--
Ticket URL: <https://trac.ffmpeg.org/ticket/5138>
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