Mosaic Mask Tracking not tracking correctly?

[Seth Lyman]

Hello there!

I'm trying to learn how to keep the mask fixed on the individuals face as they move their head throughout the video, however as the video goes on the pixelation of the mask keeps increasing to reveal their face, as well as refusing to stay in motion as they move. I'm not sure exactly what I'm doing wrong here?

Any Assistance would be greatly appreciated!

[RobShultz]

In Premiere tapping the mask tracking arrow with the line behind it repeatedly and adjust any mask shifts in real time works best. If you look at mask tracking in After Effects you get a real time preview of a mask tracking (without repeatedly clicking the button) and can stop the tracking and make adjustments in real time.