Apart from what everyone else has already said , I would suggest that you loosen up a little. It appears that you are a bit tight. Maybe from being in front of the camera, but no worries. Loosen up with some strokes and find your rhythm.
Nice stroking. Maybe loosen up a bit and level your cue. I once had a lesson with Danny Diliberto - he said to set up, lower your cue to the rail and then raise it just a bit (1/4").
I do similar drills to start every practice session. But I alternate shots from one end of the table to the other - goes a lot faster and you get used to a different look at the shot.