Hi all, looking for any help I can get in diagnosing this problem I'm having from my front passenger wheel.

I included a short video I took from my cell phone where you can hear the knocking back and forth as if something is loose. I haven't had the time to take the wheel off the car but the rocking/shaking only takes place at slow speeds or when driving over bumps. The wheel itself is securely bolted on the car but I have no idea where the shaking/rocking is coming from. My first thoughts is a bad wheel bearing but looking for any other suggestions before I take it in to get it looked at by a mechanic. Thanks

 

was that video with the car on the ground?

 

Yes, video was taken with the car on the ground (flat surface) and e-brake up.