Question / Help No GPU utilization when using nvenc. High cpu usage

[Akisame]

I (successfully) installed NvEnc and ffmpeg from source using this guide: https://askubuntu.com/questions/778100/how-to-install-compile-nvenc-in-ubuntu
However I am unable to use ffmpeg vaapi with NvEnc enabled and can only use the default NvEnc setting of obs.
Cpu utilization is 165% (400% = 100% usage on all 4 cores). GPU utilization however = 0% meaning that it is actually NOT using my nvidia gpu

When I encode a video with ffmpeg it is able to use the gpu just fine.
Does anyone have any advice?

I have a Intel Xeon E3-1220v5 with a GT710 nvidia gpu with 1 GB of dedicated ram. I am using the nvidia-418 drivers with cuda version 10.1

 

[Tuna]

I'm a bit puzzled here. Its NVENC or VAAPI. What is VAAPI with NVENC supposed to accomplish?

 

[Akisame]

It shows up as FFMPEG VAAPI with options to choose further encoders like NvEnc. Unfortunately it doesn't work. It indicates that it gets a bad parameter in the logs when I try it

 

[Tuna]

Sounds like just yet another wrapper around it then. Why not use NVENC directly? It was specifically coded for that use case - and not have to go through VAAPI. VAAPI and Nvidia have divorced a long time ago..

 

[Akisame]

That's the thing though. I AM using NvEnc directly now but it DOESN'T utilize the GPU at all as shown the image. I was hoping to get it to work via FFMPEG but that doesn't seem to work either. I am able to use the GPU with other programs (like FFMPEG). Could it be that I have to build obs from source or is something else interfering with it?

Edit: sorry for the late reply. I just got the notification e-mail