Depends on how bad the cops want to pin it on you.

If they’re on your ass hard, they’ll ignore exculpatory evidence. Since only YouTube playing isn’t concrete enough to guarantee much of anything about where you were, it’s definitely not going to satisfy them without more.

Even the phone itself being in you home the entire time isn’t definitive proof you were there.

There’s not even a guarantee you could establish reasonable doubt with every record of your phone being available, so you can’t pin your hopes on a jury either.

Hell, you could be on a call from a landline, and that isn’t sure fire proof you were at home. It’s better than a cell call, but there’s ways to fake being at home over landline if someone is determined enough.

It isn’t impossible though. You get the right investigators, they verify that your device was at home, and everything else is consistent with you being there, you could get bumped way down the list for their focus. Mind you, if every other possible suspect is then cleared, they’ll come back to you.