What kind of hwaccel acceleration for frigate on HAOS on Firebat T8 Plus N100 with Intel® UHD Graphics

Hello guys, I just got this warning:
Did not detect hwaccel, using a GPU for accelerated video decoding is highly recommended

What commands should I write into yaml config for this type of CPU with iGPU?

I have Firebat T8 Plus N100 with installed Proxmox with HAOS, and frigate is installed as an add-on to HA.

I just put this command in yaml:

ffmpeg:
  hwaccel_args: preset-vaapi

environment_vars:
  LIBVA_DRIVER_NAME: iHD

but it does almost nothing

What do you think guys? How to improve?
I have 4 cameras with low-res streams

should be using qsv with the N100