I don’t shoot D1. Do you? D1 is 720X486 I believe, whereas DV is 720X480. Where does 534 come from? Well, divide 480 by 0.9 and you get 533.333333333 which rounds up to 534.
Now, if you do the same thing to 486, you get 540.
Make three PSD or TGA files. One at 720X540 square, one at 720X534 square, and one at 720X480 0.9PAR. Put each on the same sequence, select each one at a time in the program panel to activate the motion effect outlines, and you will see that the one that fits exactly is the one that is 720X480 with 0.9PAR right out of Photoshop.
Steven
https://www.stevengotz.com