NVENC Support - flathub/com.obsproject.Studio GitHub Wiki

This package does support NVENC but you must first have CUDA properly configured on the host. This is distro dependent but here is how to do it on some distros:

Fedora

RPMFusion

# dnf install xorg-x11-drv-nvidia-cuda
# systemctl reboot

Negativo

# dnf install nvidia-driver-cuda
# systemctl reboot

Archlinux

https://wiki.archlinux.org/title/NVIDIA#Hardware_accelerated_video_encoding_with_NVENC