

In AE, for oversized corner pins to line up properly with your AE composition and pass the large frame without losing resolution, you need to pre-comp your insert and you MUST make sure to select “leave all attributes in composition." In Mocha, after tracking to your satisfaction, set your reference frame where your insert lines up by using the “align surface” tool on the matching frame.

However, if you are trying to insert an oversized insert, larger than the comp, you may find the basic megaplate corner pin workflow useful. While the exact workflow is different, you might find this tutorial helpful for using align surface with mismatched resolutions in AE: Boris FX | Align Surface and Mismatched Resolutions
