cannot write gpstimestamp

[jseto]

Hi,

I'm trying to set gpstimestamp and gpsdatestamp but it will not change at all.
Following output of execution

Code Select Expand


$ exiftool '-gpstimestamp=1:0:0' -v DJI_0071-s.mp4
======== DJI_0071-s.mp4
Rewriting DJI_0071-s.mp4...
  FileType = MP4
  FileTypeExtension = MP4
  MIMEType = video/mp4
  Editing tags in: GPS
  Rewriting Movie
  Rewriting MovieHeader
  Rewriting Track
  Rewriting TrackHeader
  Rewriting Media
  Rewriting MediaHeader
  Rewriting UserData
  Rewriting XMP
Nothing changed in DJI_0071-s.mp4
    0 image files updated
    1 image files unchanged


I also tried

Code Select Expand

exiftool '-GPSTimeStamp<createdate' -v DJI_0071-s.mp4
and got same results

Thanks

[StarGeek]

GPSDateStamp and GPSTimeStamp are EXIF tags and exiftool is unable to create an EXIF block in an MP4 file.  It should be able to write XMP:GPSDateTime, though.