https://bugs.kde.org/show_bug.cgi?id=425902
caulier.gil...@gmail.com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |caulier.gil...@gmail.com
Summary|Add face region name in XMP |Update digiKam information
|metadata for HEIF files |on the fly to XMP metadata
| |from HEIF files
--- Comment #1 from caulier.gil...@gmail.com ---
yes HEIF is a special case, because write metadata on the fly to HEIF is not
yet supported.
We can only update metadata if whole image is reencoded.
There are bugs reported to libheif project.
https://github.com/strukturag/libheif/issues/164
https://github.com/strukturag/libheif/issues/105
Another point : libexiv2, which is used normally to play with metadata on the
fly do not support HEIF. Exiv2 library must be the ultimate solution to support
fully HEIF metadata.
In digiKam with work around this problem using libheif instead, but it's
limited.
Why HEIF is not supported to Exiv2 : because the team refuse to implement HEIF
container (and CR3 raw file which is the same data container).
https://github.com/Exiv2/exiv2/issues/1229
https://github.com/Exiv2/exiv2/issues/236
So the problem is not only relevant of face region to store in HEIF metadata.
It concern all metadata writing on the fly by digiKam, aka date, orientation
comments, tags, labels, gps, etc...
Gilles Caulier
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