[FFmpeg-trac] #7562(undetermined:open): using -hwaccel nvdec produces 'No decoder surfaces left' with interlaced input and 3 or more b-frames

[FFmpeg]

#7562: using -hwaccel nvdec produces 'No decoder surfaces left' with interlaced
input and 3 or more b-frames
-------------------------------------+-------------------------------------
             Reporter:  malakudi     |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  nvdec        |               Blocked By:
  regression                         |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Changes (by Balling):

 * status:  new => open


Comment:

 So this could be because frames_ctx->initial_pool_size = dpb_size + 2;
 should be executed here
 https://github.com/FFmpeg/FFmpeg/blob/317b7b06fd97cd39feac7df57db22a30550351ff/libavcodec/nvdec.c#L621
 see #6989. Well, it can be fixed with
 -extra_hw_frames 2, OBVIOUSLY, no surprises here /facepalm.

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Ticket URL: <https://trac.ffmpeg.org/ticket/7562#comment:6>
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