[FFmpeg-trac] #9805(ffplay:new): Gray frames while decoding when HEVC codec is used and frames with missing POC reference exist

[FFmpeg]

#9805: Gray frames while decoding when HEVC codec is used and frames with missing
POC reference exist
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             Reporter:  dhirendvs   |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  ffplay
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by dhirendvs):

 Replying to [comment:4 Balling]:
 > Does not happen for me on the file. VLC does not open it at all with HW
 turned off. Please check with https://github.com/BtbN/FFmpeg-Builds
 >
 > it is usually only bad on ts files. See: #9412
 >
 > This is a bug in our ts demuxer, hevc is good.

 I tried using the latest FFmpeg build: ​https://github.com/BtbN/FFmpeg-
 Builds on 64-bit Windows 10 (Ver 1803) with Intel i5-8400 CPU. While using
 ffmpeg-master-latest-win64-gpl-shared.zip or ffmpeg-master-latest-win64
 -lgpl-shared.zip, 8 instances of gray frames are still displayed when the
 following command is used:

 ffplay -vcodec hevc H265.mp4

 and the following warning messages are displayed:

 [hevc @ 000001e0129bcfc0] Could not find ref with POC 13 0B f=0/0
 [hevc @ 000001e019e625c0] Could not find ref with POC 25 0B f=0/0
 [hevc @ 000001e0129f2600] Could not find ref with POC 18 0B f=0/0
 [hevc @ 000001e019bb16c0] Could not find ref with POC 4  0B f=0/0
 [hevc @ 000001e0129f2600] Could not find ref with POC 44 0B f=0/0
 [hevc @ 000001e012a027c0] Could not find ref with POC 31 0B f=0/0
 [hevc @ 000001e01a07dc80] Could not find ref with POC 38 0B f=0/0
 [hevc @ 000001e0129bcfc0] Could not find ref with POC 35 0B f=0/0

 I've attached a screenshot (ffplay - Gray frame.png) of one of the
 instances of gray frames at time 00:32 during ffplay playback.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9805#comment:7>
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