Rotating Video with Screenflow
Intro Video
Setup

Be sure to watch the video above so you know what we are trying to accomplish in this tutorial. To recreate the effect above you need to have first recorded your background video (in my case, a Keynote presentation).
Add Overlay Video

Expand Your Timeline

Drag 2nd Video Onto Preview Area

Your Timeline Should Look Something Like This

Crop and Resize 2nd Clip

Cropping is a little trickier. You need to click on the handles while holding the ctl key to crop the edges.

Reposition and Resize

Add Rotation and Reflection
We could leave the overlay video as is, but adding a little rotation and reflection can add a cool effect. Adjust the Y rotation (in this case -37). Then check the Reflection box.
Add Starting and Ending Transitions
Position Clip

You can use this same technique with other elements as well, not just an overlay video. I will sometimes do this with still images that I import into my project such as screenshots, arrows or other graphics.
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