On 01/30/2016 10:01 AM, Carlos E. R. wrote:
Sigh.
Indeed.
I'm scanning old photographic negatives with a compact scanner (a reflecta X7), and writing comments on the photos with Gwenview. But I have a problem: other programs do not see them.
by using gwenview I take it you are not writing the comments on the image. That would require GIMP.
I don't see them with exif tools, for instance.
Of course not. Gwenview, like Dolphin, whites to an outside file, its own database. Similarly if you add a comment or otherwise manipulate the file using Darktable, it writes it to a file-specific 'sidebar' file. The later is clear since the file is not hidden. I forget if the gwenview/dolphin comments and stars are in a database somewhere or in a hidden file. BUT gwenview/dolphin do not write to the meatadata INSIDE the image.
Conversely, if I write the comments with shotwell (which is configured to write metadata to the photos, not to a database), I don't see them in gwenview (but they do with "exif", tag "User Comment")
That's correct. You can also update the metadata using exif or exiftool. You might note that gwenview and dolphin are KDE tools.
I hesitate to continue writing comments till I verify that they are in fact written to the photo files, and that other programs read them.
Whether other programs can read them boils down to this If you expect to move or copy the photo and expect the comment to go with it, you need to put the comment inside the image using exif. If you then expect to be able to read the comment you need to have the application understand exif. If you are only ever going to use KDE and programs such as gwenview and dolphin that use the database, then exif doesn't come into it.
I don't see any configuration option in Gwenview regarding this.
There is an option, a plugin to display the exif/IPC metadata within gwenview, and a popup that lets you choose what metadata you want displayed in the sidebar. Press the "more" button in the sidebar. There are probably hundreds of other programs that don't use the gwenview database. If, for example, you move the photo to your tablet or a 'electronic picture frame' then the gwenview or dolphin comment won't go with it, whereas the exif will. That doesn't mean any specific application on the tablet etc is capable of inspecting or displaying the exif information. The exif and the gwenview/dolphin database information are mutually exclusive. I think you realise that. -- A: Yes. > Q: Are you sure? >> A: Because it reverses the logical flow of conversation. >>> Q: Why is top posting frowned upon? -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org