Tracking the shot

…Let's track our shot.…We'll optimize a few settings prior to starting and be…sure to use our holdout masks that we created previously.…Let's click down in the node graph, hit the tab…key and type C-A-M and scroll down to camera tracker.…Let's plug the source into our footage.…And we'll hit the number one key with the camera tracker selected.…Now there are two ways that we can use our roto information for the camera tracker.…We can plug it directly in line here with our shot, and I…did that by just dragging and dropping directly on top of the node tree.…

I can hit shift command x to pull that out of our node tree.…I can also use this mask and put on the side, and plug that in to the rotoshape.…Let's go ahead and do that.…Let's go to the camera tracker properties under mask.…We'll select mask alpha.…That's letting the camera tracker know to use the…alpha information from whatever's plugged in to the mask.…We're going to set the lens distortion to Unknown Lens.…This way, it will handle the lens distortion for us.…