Copy 'datetimeoriginal' to 'gpsdatetime'?

[Archive]

[Originally posted by snah on 2009-05-26 16:28:34-07]

Hi Phil,

almost there, I'd just like to adjust the GPS-time-tags.

I am trying to copy the tag 'datetimeoriginal' into the tag 'gpsdatetime' in the same file using this command:

Code:

exiftool -v "-DateTimeOriginal>GPSDateTime" img110504.tif

To command is processed but the gps-datetime is not there.

Reason:

The images were taken of Curling-Sports-Event within the same ice-rink (location).

The GPS-data and the date is the same for all images, only the time changes for each image.

I was hopeing to be able to use the tag 'datetimeoriginal' as it is equal to the tag 'GPSdatetime'.

The tags 'GPSDatestamp' and 'GPSTimestamp' are not populated yet.

Do they depend on each other?

Code:

GPSVersionID                    : 2.2.0.0
GPSLatitudeRef                  : North
GPSLatitude                     : 46 deg 25' 48.97"
GPSLongitudeRef                 : East
GPSLongitude                    : 9 deg 45' 51.07"
GPSAltitudeRef                  : Above Sea Level
GPSAltitude                     : 1851 m
GPSSatellites                   : 0
GPSMapDatum                     : WGS-84
Aperture                        : 11.0
GPSAltitude                     : 1851 m Above Sea Level
GPSLatitude                     : 46 deg 25' 48.97" N
GPSLongitude                    : 9 deg 45' 51.07" E
GPSPosition                     : 46 deg 25' 48.97" N, 9 deg 45' 51.07" E

(note: the 'aperture' sits right in the middle.)

How can I accomplish to copy the 'datetimeoriginal' into 'gpsdatetime'?

PS: Well, probably nobody would ever notice the time-difference, I mostly very curious about handling time related values.

Thanks, Hans.

[Archive]

[Originally posted by exiftool on 2009-05-26 17:20:54-07]

Hi Hans,

You should understand that GPS tags may exist in either
EXIF or XMP information, but the format and names of
some tags are slightly different.  GPSDateTime is an XMP
tag.  In EXIF, this is equivalent to the two tags GPSDateStamp
and GPSTimeStamp.  If you write these two tags, exiftool
will create a Composite GPSDateTime value when reading.
See the GPS, XMP and Composite tag name documentation
for details.

- Phil

[Archive]

[Originally posted by snah on 2009-05-26 20:22:06-07]

Hi Phil,

ok, I consulted the Composite tag name documentations.

Not so surei f I understand it all. So the tag 'datetimeoriginal' is a composite of the tags 'datecreated' and 'timecreated'.

The thing is that I cannot find a tag 'timecreated' in neither the X3F nor the corresponding TIF file, so I figured out a way to extract the values for 'datecreated' and 'timecreated' from 'datetimeoriginal' like this (same for the X3F):

Code:

exiftool -datetimeoriginal img110500.tif -d %H:%M:%S
Date/Time Original              : 10:51:23

exiftool -datetimeoriginal img110500.tif -d %Y:%m:%d
Date/Time Original              : 2009:01:11

At least I've got both values seeked for extracted.

I just need to figure out how to populate the two tags 'GPSdatestamp' and 'GPStimestamp' with the values extracted above.

Tried this but that does not really make much sense:

Code:

exiftool -v -n -Tagsfromfile img110504.tif "-datetimeoriginal" -d %H:%M:%S -GPSTimestamp -d %Y:%m:%d -GPSDatestamp img110504.tif

The combination of the two should then result in a Composite GPSdateTime value, right?

For me, this is a hard nut to crack (of course, also because I don't really comprehend it.

I know I am close and hope you give me a good hint.

Hans

[Archive]

[Originally posted by exiftool on 2009-05-27 00:21:41-07]

Try this:

Code:

exiftool "-gpstimestamp<datetimeoriginal" "-gpsdatestamp<datetimeoriginal" img110504.tif

- Phil