Replace tag value

[wwolff7]

Hi guys!

I am wondering to replace a tag existing with a new value. However, a new tag with the same name is create. E.g., exiftool -Irradiance IMG_0200_3.tif

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Irradiance                      : 125.34349122195776
After, trying to replace:
exiftool -Irradiance=130 IMG_0200_3.tif

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Irradiance                      : 130
Irradiance                      : 125.34349122195776

What I need to do for replacing the tag?
P.S. I already create a .ExifTool_config file for writing this tag

I Appreciate any help!

[Phil Harvey]

What is the output of this command on the file with 2 Irradiance values?:

exiftool -G5:1 -irradiance FILE

- Phil

[wwolff7]

Hi Phil!

Following the output

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[TIFF-IFD0-XMP:XMP-Camera] Irradiance           : 153.28663351646742
[TIFF-IFD0-XMP:XMP-tmp0] Irradiance             : 165.92510639522249

[Phil Harvey]

It seems that you are writing Irradiance to a different namespace.  I would have to see the original XMP and your config file to be able to tell you exactly what is wrong.

- Phil

[wwolff7]

Hi Phil.

The original XMP:

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.
.
.
  | | [adding XMP-Camera:Irradiance
  | | Irradiance = 187.72570554138338
  | | [adding XMP-Camera:IrradianceYaw]
  | | IrradianceYaw = -115.61921789781226
  | | [adding XMP-Camera:IrradiancePitch]
  | | IrradiancePitch = -12.273107091093493
  | | [adding XMP-Camera:IrradianceRoll]
  | | IrradianceRoll = -4.1496020301766805
  | | [adding XMP-MicaSense:BootTimestamp]
  | | BootTimestamp = 248
.
.
.



Follows my config file with the edited parts, i.e. xxx replaced by Camera

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.
.
.
# new XMP namespaces (eg. xxx) must be added to the Main XMP table:
    'Image::ExifTool::XMP::Main' => {
        # namespace definition for examples 8 to 11
        Camera => { # <-- must be the same as the NAMESPACE prefix
        #Writable => 'rational',
        SubDirectory => {
                TagTable => 'Image::ExifTool::UserDefined::Camera',
                # (see the definition of this table below)
            },
        },
        # add more user-defined XMP namespaces here...
    },
.
.
.
# This is a basic example of the definition for a new XMP namespace.
# This table is referenced through a SubDirectory tag definition
# in the %Image::ExifTool::UserDefined definition above.
# The namespace prefix for these tags is 'xxx', which corresponds to
# an ExifTool family 1 group name of 'XMP-xxx'.
%Image::ExifTool::UserDefined::Camera = (
    GROUPS => { 0 => 'XMP', 1 => 'XMP-Camera', 2 => 'Camera' },
    NAMESPACE => { 'Camera' => 'http://ns.myname.com/xxx/1.0/' },
    WRITABLE => 'string', # (default to string-type tags)
    # Example 8.  XMP-xxx:NewXMPxxxTag1 (an alternate-language tag)
    # - replace "NewXMPxxxTag1" with your own tag name (eg. "MyTag")
    Irradiance => { Writable => 'string' },
.
.
.


When I use my config file and set a value , e.g., exiftool -Irradiance=65 FILE. XMP-Camera became XMP:tmp0 and a new Irradiance tag is created.

Wagner

[Phil Harvey]

Hi Wagner,

You haven't set the correct namespace URI in your config file.  You need to change "http://ns.myname.com/xxx/1.0/" to whatever is used in the original XMP.  To see the original XMP, do this:

exiftool -xmp -b FILE

- Phil

[wwolff7]

Hi Phil,

Yeah! Now it works perfectly 

Thanks a lot!