There is research like https://ai.googleblog.com/2018/04/looking-to-listen-audio-visual-speech.html https://ai.googleblog.com/2018/04/looking-to-listen-audio-vi

There is research like https://ai.googleblog.com/2018/04/looking-to-listen-audio-visual-speech.html https://ai.googleblog.com/2018/04/looking-to-listen-audio-vi... which separates voice using video as additional data. I think there was a similar version which separated two musical instruments also using video.