vaapi bridge for NVIDIA/Chromium video hardware acceleration

I'm trying to get the vaapi bridge for NVIDIA working so that Chromium can get hardware accelerated video transcoding. I use Firefox myself but it really is just for Discord/Vesktop. Only instructions I was able to find were on the Arch wiki and they didn't work unfortunately. Works fine on my AMD system via vaapi. vainfo doesn't report EncSlice for any codec.

Any help is appreciated