Thanks for sharing all of these tools! Do you happen to know if any of these can write metadata to mp4 or mov files that will be recognized by Mac/iOS Photos?

I've been trying to write location, camera, date, etc. to encoded videos, but Photos won't recognize anything except files straight off an iPhone. The closest thing I've found is that ffmpeg can write Quicktime tags and the structure looks identical to me when I view it in exiftool, but Photos still doesn't respect it, so I assume there's some minute difference that breaks Photos' parsing.