Derivative Images (module for Omeka S)
Derivative Images is a module for Omeka S that allows to recreate all derivative files from the original media, if they are still available. It is useful when you change the parameters of the thumbnails, for example bigger or lower size, or when you add a new derivative type.
Uncompress files and rename plugin folder
See general end user documentation for Installing a module and follow the config instructions.
Because this is a tool that is rarely used, only the global admin can use it.
First, parameter your thumbnails in the file
Then, simply check the box in the config page of the module. The job is launched in the background.
When the process is ended (check the job log), the module can be uninstalled.
- Add options to select medias by type, all thumbnails or only missing ones, all types of thumbnails or not.
- Manage creation of thumbnails for media without original (youtube…).
Use it at your own risk.
It’s always recommended to backup your files and your databases and to check your archives regularly so you can roll back if needed.
See online issues on the module issues page.
This software is governed by the CeCILL license under French law and abiding by the rules of distribution of free software. You can use, modify and/ or redistribute the software under the terms of the CeCILL license as circulated by CEA, CNRS and INRIA at the following URL "http://www.cecill.info".
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In this respect, the user’s attention is drawn to the risks associated with loading, using, modifying and/or developing or reproducing the software by the user in light of its specific status of free software, that may mean that it is complicated to manipulate, and that also therefore means that it is reserved for developers and experienced professionals having in-depth computer knowledge. Users are therefore encouraged to load and test the software’s suitability as regards their requirements in conditions enabling the security of their systems and/or data to be ensured and, more generally, to use and operate it in the same conditions as regards security.
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- Copyright Daniel Berthereau, 2018