Bike fit / correct riding position

It does look like your left knee is coming up and over i.e., it's coming up wide and then moving toward the bike before starting its downstroke. This seems to be very common, so I don't know if it's a problem.

You're supposed to try not to do that (it is hard) as it's inefficient and adds wear to your knees as they're rotating as well as going up and down. You need to put work into training yourself not to, though. When I had a retul bike fit done it found that my knees track from side to side like this, and it's since been controlled to a certain extent by custom footbeds but not completely eliminated.

I agree that it looks like your hips are rocking a little, S&C, but it's difficult to see properly at that camera height.