I am working on trying to make video loops for backgrounds at my church. I have a good plan of taking 30 seconds of video and cutting it into two chunks. The first chunk has the video from 15-30 seconds, and the second chunk has video from 0-15 seconds and then I can apply a fade transition between the two, making the transition in the middle of the two files fade, and the loop from the end of the file to the beginning flawless.

My problem is that I recorded everything in 16:9 and I need 4:3 for the projectors. I was able to use the Crop Power Tool, but I don't see a way to specify where the crop box appears, so I can duplicate it exactly on the second video file. Is there a way and I'm missing it? Hopefully like an offset value I could replicate to the second chunk so it is the same?

If not, my only other option would be to crop the source video and render it, and then cut up the resulting file, but I'm trying to avoid too many renderings if I can do it all in one pass.