content aware fill

That is nothing CAF can fix for you due to the kind of motion used - there simply is no genuine motion from left to right or any of that. You have to create a custom overlay in a pre-comp and place it over the roller. This can easily be done with CC Cylinder or even manually with a few gradients to create the illusion of a rounded surface. It doesn't even need to be animated, because at those speeds you don't notice anything but a slight occasional change in light flickering off the rollers and a micro noise pattern.

Mylenium