Yes, I realize this is an audio-centric place 
But there is some cross-over in people that do both and I know a lot of editors that started out as musicians.
Not sure what you mean by your question, but I studied all of the above topics, basically every aspect of post production, which encompasses both audio and video. I’d say both are equally important in post production. Bad audio is one of the worst sins you can make in working in pro video stuff.