How to 60fps with NVEnc (FFmpeg)?

[Selur]

I have no clue what you did, assuming it's a bug, read
[INFO] Infos needed to fix&reproduce bugs,...

I tried:

1. taking a random input file and feeding it to Hybrid
   
2. enabling 'Filtering->Speed Change->Interpolate frame rate' and setting it to '60 fps'
   
3. selecting 'NVEnc (FFmpeg)' as encoder (using H264 as Encoder)
   
4. creating a new job
   

->output .mp4 file plays fine and is 60fps

used encoding call was:

ffmpeg -y -noautorotate -threads 8 -i "F:\TestClips&Co\files\test.avi" -map 0:0 -an -sn -vf framerate=fps=60:scene=7,zscale=rangein=tv:range=tv -pix_fmt yuv420p -vsync 0  -vcodec h264_nvenc -preset 5 -profile:v 2 -level 0 -rc vbr_hq -2pass 1 -qmin 0 -qmax 51 -b:v 1500k -spatial-aq 0 -temporal_aq 0 -rc-lookahead 0 -surfaces 32 -no-scenecut 0 -refs 3 -nonref_p 1 -strict_gop 1 -bsf:v h264_mp4toannexb "E:\Temp\test_16_18_34_6610_01.264"

using H.265 as encoder the encoding call is:

ffmpeg -y -noautorotate -threads 8 -i "F:\TestClips&Co\files\test.avi" -map 0:0 -an -sn -vf framerate=fps=60:scene=7,zscale=rangein=tv:range=tv -pix_fmt yuv420p -vsync 0  -vcodec hevc_nvenc -preset 5 -profile:v 1 -level 0 -tier main -rc vbr_hq -2pass 1 -qmin 0 -qmax 51 -b:v 1500k -spatial-aq 0 -temporal_aq 0 -surfaces 32 -no-scenecut 0 -refs 3 -nonref_p 1 -strict_gop 1 -bsf:v hevc_mp4toannexb "E:\Temp\test_16_18_11_7810_01.265"

I get a broken output, when using profile 'Main' (-profile:v 1) switching to 'Main 10' (-profile:v 2) output seems fine.
No clue why.
Mapping should be:
0 <> none
1 <> main
2 <> main10
3 <> rext

-> I'd recommend to use NVEnc instead of 'NVEnc (FFmpeg)'.
(Also I recommend to not use the 'Speed Change' option, but use Interframe with Vapoursynth for better quality interpolation, see the 'Convert to 60fps' thread from above.)

Cu Selur