@foone I'm assuming that your problem is that you want to accurately _set_ the creation_time metadata on e.g. an mp4 file, not that you're trying to read it back out: https://superuser.com/a/1497131
I'm also assuming that your recording device's time is reasonably accurate / synced to NTP.
Interestingly, it seems like phones probably get this right, so if you could control a phone, it might just work...
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