I have a slow motion video I took on an iPhone using the "SLO-MO" setting. Unfortunately it recorded in portrait mode, and I want it in landscape. I want to rotate it, but I don't want to lose the ability to change what part of it plays in slow motion.
I tried exporting the original file and rotating it with Quicktime (on a Mac). It worked, but when I import it back to Photos (with or without the original .xmp metadata file) it shows up as a plain video file that's slow all the way through.
I tried opening it in iMovie (on an iPhone) and rotating it. It worked, but I can only output it as a fixed-speed video.
There's got to be a way to rotate a slo-mo video without turning it into a regular video, right?