If you mean the transition around 7 seconds, it’s not very difficult. Just enable 3D for both layers. For the layer you are transitioning, rotate -90 on the X, move it’s Y position to 0 and it’s Z position to height/2. If you turn on one of your custom views your layers should look like the corner of a box.
Next you would add a null to the scene, enable it’s 3D and it’s Z position would be comp height/2—so for a 1280 x 720 it’s z would be 360. Now just parent both layers to the null and rotate the nulls x rotation 90 degrees. You could form an entire box if you wanted and keep rotating if you wanted.
Lastly in that example I noticed a little light as it rotated so you would want to add one that is behind and over the front layer, so it only shows up as the box is turning.
I made a quick example project to illustrate the technique, hope you find it helpful: 4615_3dtransitioncs5.5.aep.zip
Johnny Cuevas, Editor
Thinkck.com
“I have not failed 700 times. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.”
—THOMAS EDISON on inventing the light bulb.