[FFmpeg-trac] #10047(undetermined:new): av1_nvenc bugs

[FFmpeg]

#10047: av1_nvenc bugs
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             Reporter:  Jacky        |                    Owner:  (none)
  Koning                             |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  unspecified  |               Resolution:
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by James):

 Regarding the second part, it's not a bug. The nvenc wrapper supports
 yuv444p as input but not necessarily for all encoders and not necessarily
 with your GPU. If you get "YUV444P not supported" it's because your GPU
 returned an error when queried about NV_ENC_CAPS_SUPPORT_YUV444_ENCODE for
 the current encoder (av1). It might work with h264 or hevc.

 testsrc generates rgb24, but since nvenc doesn't support it, a scaler is
 autoinserted to convert it to the closest supported format, in this case
 yuv444p, which is then rejected by your GPU. You're better passing the
 encoder the format you want and know it supports instead of relying on
 autoinserted scalers somewhere in the filterchain. For AV1, use cuda
 (decoders using nvdec/cuda hwaccel output it), d3d11 (same for d3d11va
 hwaccel decoders), or yuv420p. With your command line example above,
 "testsrc,format=yuv420p" will do it.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10047#comment:2>
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