[FFmpeg-trac] #10137(avcodec:open): hevc_nvenc [Clipping lookahead depth] and surfaces

[FFmpeg]

#10137: hevc_nvenc [Clipping lookahead depth] and surfaces
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             Reporter:  colemarc     |                    Owner:  (none)
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avcodec
              Version:  unspecified  |               Resolution:
             Keywords:  hevc_nvenc   |               Blocked By:
  scenecut lookahead clipping        |
  surfaces                           |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by quinkblack):

 Replying to [comment:5 colemarc]:
 > Replying to [comment:4 quinkblack]:
 > It seems to me that hevc_nvenc scenecut detection is rather shallow.
 > I mean, very hard cuts are rendered as key frames, but a scene cut
 involving adiacent frames having similar colors is not (even if the
 pictures are completely different in terms of Mean Square Error).
 > Do you happen to know if it can be made more sensitive?
 > Could option `-b_ref_mode 0` interfere with scenecut detection?

 I don't know how to set scenecut threshold for nvenc, but you can set
 frmae->pict_type and implement scenecut your self.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10137#comment:6>
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