What's missing so far is VAAPI support for WebRTC. Apparently, Firefox is using same libwebrtc as Chrome does, and it still doesn't support hardware acceleratio

What's missing so far is VAAPI support for WebRTC. Apparently, Firefox is using same libwebrtc as Chrome does, and it still doesn't support hardware acceleration. This results in some ugly behavior of WebEx for instance, which blocks video in its WebRTC calls, since it assumes that "CPU is too weak" to handle it. Cisco never fixed this issue.