4K transcoding problem with NVENC (outdated false limitation in Hybrid)

[No limit]

I tried to reproduce this with my 1070ti, by:

• Starting Hybrid
  
• Loading a 4k source
  
• Selecting NVEnc as encoder (Base->Processing->Video->NVEnc)
  
• Settings 'NVEnc->Base->Encoding mode' to 'constant quantizer'
  Command line looks like this:
  NVEnc --y4m -i - --fps 25.000 --codec h264 --profile high --level auto --sar 1:1 --lookahead 16 --cqp 20:23:25 --gop-len 0 --bframes 3 --ref 3 --mv-precision Q-pel --cabac --deblock --preset default --videoformat undef --colorprim bt2020 --transfer smpte2084 --colormatrix bt2020nc --output "E:\Temp\4K sun HDR test.264"
  
• Setting an output file (Base->Output file)
  
• Creating a new job (Base->Add to queue)
  
• Starting the job (Jobs->Queue->Start)
  

-> Encoding worked fine.

Only options that could be possible to limit the max MBs per second are the profile&level settings.
Other than that I got no clue what settings you used.
My current guess is that you used a profile&level combination which doesn't allow the bitrate+fps+resolution combination you chose.

=>

Please, read the 'Infos needed to fix&reproduce bugs,..'-sticky before you post about a problem.

Without proper detail there is no way for me to reproduce the issue.


Cu Selur

Level is always "Auto", but I tried with 6.2, but  nothing has changed.

All other settings are "factory default"

Sometimes it can start, but automatically revert the output to 1080p.

Other above mentioned transcoder softwares can do 4K NVENC HEVC 10bit videos without any problems & warnings.