I assume this has an entirely innocent explanation:
Right click on the area of screen playing a video and click on ‘Global Settings’, then click on the ‘Camera and Microphone’ tab and open ‘Camera and Microphone settings by site’ and this is what you might see…..
s.ytmg.com is apparently Youtube allowing for interactive video games but why does the BBC need to request access to my camera and microphone?….though I don’t have any connected for precisely that reason.
If you haven’t blocked BBC access….
Whilst you are watching the BBC is the BBC watching you?