When encoding a ProRes QT to an H264 MP4, AME will sometimes incorrectly interpret the file as VR, which completely messes it up.

For some reason, the resulting file looks distorted when viewed with some apps (eg: VLC and PotPlayer on Win10), but it looks normal in others (eg: when viewed on Dropbox.com)

The fix is seemingly to check and uncheck "Video is VR" under the Video export settings. I'm not sure if anyone else has encountered this issue?