Notice that although I have set the GPSDateTime field to contain lots of 1s the value read back is the value set to the XMP tags, a couple of weeks ago. With a file that contains no GPS tags at all:Įxiftool -args ~/Pictures/100_0889.JPG | grep -i GPS | egrep -i "time|date"Īttempt to add mismatched tags to that file:Įxiftool ~/Pictures/100_0889.JPG -GPSTimeStamp=10:48:20 -GPSDateStamp=2015:12:09 -GPSDateTime="2011:11:11 11:11:11" -o foo.jpgĮxiftool -args foo.jpg | grep -i GPS | egrep -i "time|date" Not surprisingly the two tag types contain the same time and date, albeit in slightly different formats. I'm running on LInux, and I can use grep to show just the tags I am interested in:Įxiftool -args ~/Pictures/20151209_104853\ GPS\ tagged.jpg | grep -i GPS | egrep -i "time|date" HOW TO REMOVE EXIFTOOL BY PHIL HARVEY CODEIt looks to me as if the code is attempting some sort of merge between the XMP tags and the EXIF XML tags I mentioned in my original post.įirst, here is a file that was written by a Samsung camera phone with GPS tags contains both values. Let me show you exactly what I am seeing. I agree, we're talking around in circles. /Image-ExifTool-10.00/exiftool -args foo.jpg | grep GPS Start with a file with no GPS tags (you'll have to mangle the commands if you aren't Linux) GStreamer has separate code to handle the two types of tag I have to enhance the readers and writers for both types, and obviously to test this I want files with differing values. It wouldn't make much sense for them to be different - but what I'm trying to do is test my enhancements to support these particular tags in GStreamer. AIUI both the tag based and the XML based properties can be written into the file, and they have independent values. That lists the tags 7 and 1d, and states that they both map down to the XML property exif:GPSTimeStamp. In CIPA DC-010 -2012 Exif 2.3 metadata for XMP there's a table showing the mapping between tag based and XML properties. I don't think I'm confused - but I might be ) in fact this whole area is pretty confusing.
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