If the time is set to UTC, then the command you want to run would be exiftool -api QuickTimeUTC "-FileModifyDatefirst thing you want to do is make sure the time stamp in the video is correct.įirst, you want to Right-Click->Properties->Details tab. Additionaly, many cameras do not set it correctly as UTC, again, using local time. They are supposed to be set to UTC and many programs do not correctly read the embedded time stamp, reading it instead as local time. This can be done using exiftool but video time stamps can be tricky.