I had a YT video that was flagged for infringing on a music copyright. They alerted me, and presented me with a list of choices from which I could choose how I wanted to handle it. I could say that I had permission to use the piece, and stuff like that. But "mute the audio" wasn't one of the choices, as far as I can recall.
What sticks out in my memory about the incident though, was something else. They were right that the audio wasn't mine - but the piece that they flagged it as being a copy of was incorrect! They said I was copying X (I forget what), but my video was not X, it was a different song entirely. And of the choices they give you for how to handle it, they don't give you an option for "YT identified the audio wrong, it's not really that song at all". I was stuck.