[FFmpeg-trac] #6335(undetermined:new): ffmpeg silently ignores first 50 frames when decoding h264

[FFmpeg]

#6335: ffmpeg silently ignores first 50 frames when decoding h264
-------------------------------------+-------------------------------------
             Reporter:  zhukov       |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:  git-
  undetermined                       |  master
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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 Summary of the bug:

 ffmpeg skips first 50 frames in my sample file silent_ignore_44vs94.mp4

 expected number of frames 94
 actual number of frames 44

 it plays as expected (no frames ignored) in all players including vlc,
 mplayer, quicktime, firefox/safari  browser builtin video player, but NOT
 chrome

 Same behavior in ffmpeg 3.2.4, 3.3, and git master


 How to reproduce:
 {{{
 % ffmpeg -report -i silent_ignore_44vs94.mp4 -f image2 -y image%04d.jpg
 ... decode ok ...
 Input file #0 (silent_ignore_44vs94.mp4):
   Input stream #0:0 (video): 94 packets read (293495 bytes); 44 frames
 decoded;
   Total: 94 packets (293495 bytes) demuxed
 ...

 % ls *.jpg | wc -l
 44
 }}}

 I am also attaching the report file and input file

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Ticket URL: <https://trac.ffmpeg.org/ticket/6335>
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