.avif metadata support

[wywh]

What metadata is supported in .avif images?

It seems Description can be readily written to XMP while GPS and date are ignored:

Code Select Expand

exiftool -overwrite_original '-Description=Description' '-GPSLatitude*=-36.6101' '-GPSLongitude*=-66.91515' '-GPSAltitude*=119.9' '-DateTimeOriginal=2001:06:01 12:00:00' a.avif
    1 image files updated

exiftool -a -G1 -s -n a.avif
[XMP-dc]        Description                     : Description
GPS and date are written if explicitly set to XMP. macOS Sequoia 15 displays these tags.

Code Select Expand

exiftool -overwrite_original '-Description=Description' '-XMP:GPSLatitude*=-36.6101' '-XMP:GPSLongitude*=-66.91515' '-XMP:GPSAltitude*=119.9' '-XMP:DateTimeOriginal=2001:06:01 12:00:00' a.avif

exiftool -a -G1 -s -n a.avif
[XMP-dc]        Description                     : Description
[XMP-exif]      DateTimeOriginal                : 2001:06:01 12:00:00
[XMP-exif]      GPSAltitude                     : 119.9
[XMP-exif]      GPSAltitudeRef                  : 0
[XMP-exif]      GPSLatitude                     : -36.6101
[XMP-exif]      GPSLongitude                    : -66.91515
- Matti

[StarGeek]

Strange. It appears to be working here

Code Select Expand

C:\>exiftool -all= -P -overwrite_original "-Description=Description" "-GPSLatitude*=-36.6101" "-GPSLongitude*=-66.91515" "-GPSAltitude*=119.9" "-DateTimeOriginal=2001:06:01 12:00:00"  Y:\!temp\x\y\test.avif
    1 image files updated

C:\>exiftool -G1 -a -s -n -description -DateTimeOriginal -gps* Y:\!temp\x\y\test.avif
[XMP-dc]        Description                     : Description
[ExifIFD]       DateTimeOriginal                : 2001:06:01 12:00:00
[GPS]           GPSVersionID                    : 2 3 0 0
[GPS]           GPSLatitudeRef                  : S
[GPS]           GPSLatitude                     : 36.6101
[GPS]           GPSLongitudeRef                 : W
[GPS]           GPSLongitude                    : 66.91515
[GPS]           GPSAltitudeRef                  : 0
[GPS]           GPSAltitude                     : 119.9
[Composite]     GPSAltitude                     : 119.9
[Composite]     GPSLatitude                     : -36.6101
[Composite]     GPSLongitude                    : -66.91515
[Composite]     GPSPosition                     : -36.6101 -66.91515

[wywh]

Strange. It appears to be working here

Strange indeed. A few days ago AFAIR it worked but yesterday it did not so I presumed I misremembered my early test (I did optionally clear with '-all=' previous tags while testing then).

But today it works as expected again and also ExifIFD:DateTimeOriginal and GPS:GPSLatitude can be readily used instead XMP-exif:

Code Select Expand

exiftool -all= -P -overwrite_original '-Description=Description' '-GPSLatitude*=-36.6101' '-GPSLongitude*=-66.91515' '-GPSAltitude*=119.9' '-DateTimeOriginal=2001:06:01 12:00:00' a.avif

exiftool -G1 -a -s -n -description -DateTimeOriginal '-gps*' a.avif
[XMP-dc]        Description                     : Description
[ExifIFD]       DateTimeOriginal                : 2001:06:01 12:00:00
[GPS]           GPSVersionID                    : 2 3 0 0
[GPS]           GPSLatitudeRef                  : S
[GPS]           GPSLatitude                     : 36.6101
[GPS]           GPSLongitudeRef                 : W
[GPS]           GPSLongitude                    : 66.91515
[GPS]           GPSAltitudeRef                  : 0
[GPS]           GPSAltitude                     : 119.9
[Composite]     GPSAltitude                     : 119.9
[Composite]     GPSLatitude                     : -36.6101
[Composite]     GPSLongitude                    : -66.91515
[Composite]     GPSPosition                     : -36.6101 -66.91515
...maybe this is related macOS Sequoia 15.0.1 and Xcode 16 initial hiccups (or just user error)? For example, in earlier macOS Sonoma 14.7 and Xcode 15.3 "Warning: Error 512 running "/usr/bin/setfile" to set FileCreateDate" message does not occur although the output is still as expected also with macOS 15.0.1 and Xcode 16.

That warning can be fixed by editing time zone off from the .xmp sidecar that is copied to the .jpg:

<photoshop:DateCreated>2000-01-01T12:00:00+02:00</photoshop:DateCreated>
...to:
<photoshop:DateCreated>2000-01-01T12:00:00</photoshop:DateCreated>

...but then in that command is "Warning: Error converting value for ExifIFD:OffsetTimeOriginal (PrintConvInv)" obviously because the time zone Offset is missing from the .xmp.

Code Select Expand

exiftool -m -overwrite_original -ext jpg -ext heic '-IPTC:CodedCharacterSet=UTF8' -tagsFromFile %d%f.xmp '-AllDates<XMP-photoshop:DateCreated' '-ExifIFD:OffsetTime*<XMP-photoshop:DateCreated' '-XMP-photoshop:DateCreated<XMP-photoshop:DateCreated' '-EXIF:All<XMP-exif:All' '-GPS:GPSLatitudeRef<Composite:GPSLatitudeRef' '-GPS:GPSLongitudeRef<Composite:GPSLongitudeRef' '-XMP:All<XMP:All' --XMP-exif:GPSDateTime '-IPTC:ObjectName<XMP-dc:Title' '-IPTC:Caption-Abstract<XMP-dc:Description' '-EXIF:ImageDescription<XMP-dc:Description' '-IPTC:Keywords<XMP-dc:Subject' '-FileCreateDate<XMP-photoshop:DateCreated' '-FileModifyDate<XMP-photoshop:DateCreated' .
Warning: Error 512 running "/usr/bin/setfile" to set FileCreateDate - ./image_jpg_ok.jpg
    1 directories scanned
    1 image files updated
- Matti