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

[FFmpeg]

#10047: av1_nvenc bugs
-------------------------------------+-------------------------------------
             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            |
-------------------------------------+-------------------------------------
Comment (by Jacky Koning):

 It is not converting the format at all
 {{{
 Input #0, lavfi, from 'testsrc':
   Duration: N/A, start: 0.000000, bitrate: N/A
   Stream #0:0: Video: wrapped_avframe, rgb24, 320x240 [SAR 1:1 DAR 4:3],
 25 fps, 25 tbr, 25 tbn
 Stream mapping:
   Stream #0:0 -> #0:0 (wrapped_avframe (native) -> av1 (av1_nvenc))
 Press [q] to stop, [?] for help
 [av1_nvenc @ 0000029855600d40] YUV444P not supported
 [av1_nvenc @ 0000029855600d40] No capable devices found
 Error initializing output stream 0:0 -- Error while opening encoder for
 output stream #0:0 - maybe incorrect parameters such as bit_rate, rate,
 width or height
 }}}
 Look at hevc_nvenc
 {{{
 Input #0, lavfi, from 'testsrc':
   Duration: N/A, start: 0.000000, bitrate: N/A
   Stream #0:0: Video: wrapped_avframe, rgb24, 320x240 [SAR 1:1 DAR 4:3],
 25 fps, 25 tbr, 25 tbn
 Stream mapping:
   Stream #0:0 -> #0:0 (wrapped_avframe (native) -> hevc (hevc_nvenc))
 Press [q] to stop, [?] for help
 Output #0, null, to 'pipe:':
   Metadata:
     encoder         : Lavf59.34.101
   Stream #0:0: Video: hevc (Rext), gbrp(pc, gbr/unknown/unknown,
 progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 2000 kb/s, 25 fps, 25 tbn
     Metadata:
       encoder         : Lavc59.52.102 hevc_nvenc
     Side data:
       cpb: bitrate max/min/avg: 0/0/2000000 buffer size: 4000000
 vbv_delay: N/A
 }}}


 In that one it indeed auto converts to gbrp. But I still think 'this' is a
 bug.
 We are clearly able to use yuv444p with hevc_nvenc so why not with
 av1_nvnec? Like why is it in the list when there is only 1 supported
 encoder which is included in every 4000 series GPU when it does not
 support it? In my opinion either it should not be in the list and then be
 converted to the next best or it should work.

 Which could lead to another discussion point that might throw that
 argument out of the window. h264_nvenc does not support yuv420p10le either
 and it will also error out.
 {{{
 Input #0, lavfi, from 'testsrc':
   Duration: N/A, start: 0.000000, bitrate: N/A
   Stream #0:0: Video: wrapped_avframe, rgb24, 320x240 [SAR 1:1 DAR 4:3],
 25 fps, 25 tbr, 25 tbn
 Stream mapping:
   Stream #0:0 -> #0:0 (wrapped_avframe (native) -> h264 (h264_nvenc))
 Press [q] to stop, [?] for help
 [h264_nvenc @ 000002aa47630dc0] 10 bit encode not supported
 [h264_nvenc @ 000002aa47630dc0] No capable devices found
 Error initializing output stream 0:0 -- Error while opening encoder for
 output stream #0:0 - maybe incorrect parameters such as bit_rate, rate,
 width or height
 }}}
 But even h264_nvenc supports yuv444p. yuv444p is usefull for lossless
 converting to apply several video filters after which you convert it back.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10047#comment:4>
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