[FFmpeg-trac] #5587(avfilter:new): Attempting to use scale_npp filter results in "impossible to convert between formats"

[FFmpeg]

#5587: Attempting to use scale_npp filter results in "impossible to convert
between formats"
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             Reporter:  rednaxela   |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |
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Comment (by andrey.turkin):

 libavfilter is not too smart when it comes to HW acceleration. Try
 something like
 "hwupload_cuda,scale_npp=w=1316:h=1080:format=yuv420p:interp_algo=lanczos,hwdownload,format=yuv420p".
 Basically, you need to explicitly send frames to GPU and back, and you
 need to manually tell libavfilter the pixel format of the frames on their
 way back to main memory (which is a shame but it's how things are for
 now).

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Ticket URL: <https://trac.ffmpeg.org/ticket/5587#comment:1>
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