One of my latest Twitch VODs got blocked world-wide because of some music that was playing in the VRChat world I was streaming from. YouTube wouldn't do the song removal magic because "the number of instances exceeds the technological limitations" or some such (probably meaning "we don't want to pay for that amount of processing").
Luckily, I record several audio tracks when I stream, one of which happens to be isolated game audio. So I loaded the VOD audio track and the game audio track into Audacity, inverted the game track to cancel it out of the VOD track, then added the game track again and applied a noise gate to it (so I could keep everything coming from VRChat that wasn't the very quiet music).
Screenshot of Audacity showing from top to bottom the inverted game audio, the full VOD audio, and the noise gated game audio.
this is actually kinda cool... #Twitch #VODs #VRChat #YouTube #Audacity