adding the meta data of another image

[Murph21]

Hello again,

I came across another problem. Namely how to change the values of XMP-MicaSense:DarkRowValues after copying into destination image. This might be unusual but since I am transforming my image from 12bit to 16bit I like to update the DarkRowValues also into 16bit range.

I tried following code to find the tags specific address:

Code Select Expand

c:\exiftool>exiftool -G1 -darkrowvalue "D:\Users\BKU\MinaMontakhabVijouei\Desktop\transformed_16bit_imags\IMG_0000_1.tif"
[XMP-MicaSense] Dark Row Value                  : 304, 304, 305, 306
and the following codes to update the value (to an arbitrary number for testing), which gives error of not recognizing the tag:

Code Select Expand

c:\exiftool>exiftool  -XMP-MicaSense:DarkRowValue="1,1,1,1" "D:\Users\BKU\MinaMontakhabVijouei\Desktop\transformed_16bit_imags\IMG_0000_1.tif"
Warning: Tag 'XMP-MicaSense:DarkRowValue' is not defined
Nothing to do.

c:\exiftool>exiftool  -XMP-MicaSense:DarkRowValue=[1,1,1,1] "D:\Users\BKU\MinaMontakhabVijouei\Desktop\transformed_16bit_imags\IMG_0000_1.tif"
Warning: Tag 'XMP-MicaSense:DarkRowValue' is not defined
Nothing to do.

c:\exiftool>exiftool  -XMP:DarkRowValue=[1,1,1,1] "D:\Users\BKU\MinaMontakhabVijouei\Desktop\transformed_16bit_imags\IMG_0000_1.tif"
Warning: Tag 'XMP:DarkRowValue' is not defined
Nothing to do.

c:\exiftool>exiftool  -DarkRowValue=[1,1,1,1] "D:\Users\BKU\MinaMontakhabVijouei\Desktop\transformed_16bit_imags\IMG_0000_1.tif"
Warning: Tag 'DarkRowValue' is not defined
Nothing to do.
Is it possible to change the darkrowvalues at all? or is there another way to change it?

Thank you very much in advance!

-Mina

[Phil Harvey]

Hi Mina,

The MicaSense XMP tags are not defined by ExifTool.  You will have to add user-defined tags to be able to write these.  See the sample config file for examples of how to create user-defined XMP tags.  Specifically, see NewXMPxxxTag1, but you probably want "Writable" to be a simple "string".

- Phil