FYI I found MetaVideo, which lets me adjust the movie file timestamps to match the embedded QuickTime creation date. Now I just have to remember to use it.

(I already had MetaImage, which I use to do the reverse when scanning old negatives. While scanning, I hand-set file timestamps based on best-known exposure date, time, and film frame number. Then I use MetaImage to batch copy those file timestamps to the corresponding EXIF tags.) #macOS #MetaVideo #MetaImage