I installed the Nvidia graphics drivers by enabling the already installed rpmfusion-nonfree-nvidia-driver repository.
Now I would like to install some other software contained at rpmfusion (ffmpeg).
Should I just install the full free/non-free rpmfusion repository?
Will that conflict with the already enabled nvidia section of rpmfusion?
Are these totally independent repositories?
Is it advisable to have repositories installed and sections of those repositories installed separetely?
You can install and use both RPM Fusion free and non-free repos following the official Fedora documentation:
No, although the RPM Fusion NVIDIA repo becomes redundant.
Not really, they use the same build system and hosting servers.
rpmfusion-nonfree-nvidia-driver is part of
The advisable sections are enabled by default.
You can disable the Nvidia-specific repo file after enabling full RPM Fusion:
# dnf config-manager --set-disabled rpmfusion-nonfree-nvidia-driver