Show and edit EXIF Tags

[epe]

Feature request

User type: Logged-in or public user

User level: Beginners, intermediate or advanced

Description

My photo collection is taken care of with digikam, a really powerful foto managment tool.
In digikam you can give stars to images and use tagging to mark subjects, context or people in the images.

nextcloud gallery Features requested:

• tags album: clicking on a Tag shows an album with all images with that Tag.
• gallery should show Tags and Stars from Images when single Image is used.
• Logged in Users can add tags, which are then being written into the fille (and or filename.xmp file - this would be lighter on syncing changes in metadata) There is a few php exif libraries available to do so.

EXIF is the standard that stores metadata in image files.
The actual values are stored in a format defined by IPTC and XMP
https://de.wikipedia.org/wiki/IPTC-IIM-Standard
https://de.wikipedia.org/wiki/Extensible_Metadata_Platform

Benefit / value

Better usability, Easier to keep in control of the floods of images that are synced.

Before owncloud we had a straight forward Foto Workflow e.g. from digital camera -> import folder, editing -> image library -> sharing with friends.
Nowadays Images pour in from different peoples smartphones/cameras/ other synced devices and adding tags only makes sense if this is can be done by anyone who is sharing those images.

Risk / caveats

Displaying images in Tag based albums would require some thought about which folders or subfolders are beeing scanned for images.
Some users might have been used gallery 3, phtagr, or other image galleries, which use some kind of database or caching of Image Tag information.

Sponsorship

Are you a developer willing to implement this feature?: no
Can you sponsor the development of this feature or do you know someone who can?: yes
We could at least to some extent sponsor work on that feature.

[Spartachetto]

you raise different points, maybe you could consider to split them in different items.

About EXIF meta data you could find some useful information here and here. Probably @oparoz knows if your sponsorship could be useful.

The "tags album" look to me as a functionality of the tag search page, it could be that the best place to ask for it is the server repository

[oparoz]

There are already several issues opened in this repo regarding Exif. The main hurdle is to finish https://github.com/interfasys/mediametadata . I need to ping the student. Once we have an app we can then decide what to do once we have a way to collect the metadata. And yes sponsorship is important, if we can find someone to write the code.

[stevenhorner]

The Metadata plugin already displays EXIF information in file view, if it could be displayed in the gallery too which is the better place for it to be displayed it would be excellent.

[helmut72]

Editing EXIF (also with multi selection) would be cool!

[Happyfeet01]

Any updates to this Feature