[FFmpeg-devel] How to improve GPU command to improve picture quality is the same as CPU transcoding quality

[陈军]

Hi: 
    I use this command 
    #
    ffmpeg -r 24 -i vbox4071__B4I0335_211922.JPG -pix_fmt yuv444p -r 24 -f yuv4mpegpipe - 2>/dev/null|x265 --crf 16 -o 265-1/vbox4071__B4I0335_211922.265 - --y4m 
   Then i want to use gpu command
   ffmpeg -r 24 -i vbox4071__B4I0335_211922.JPG -pix_fmt yuv444p -r 24 -f yuv4mpegpipe - 2>/dev/null | ffmpeg -i - -c:v hevc_nvenc  -crf 16 -f hevc 265-1/vbox4071__B4I0335_211922.265
   But i got the picture quality is very low  from gpu compare with cpu；
   How to improve GPU command to improve picture quality is the same as CPU transcoding quality？
  Thanks；