Hi Wanangwa, This error could be caused by some missing or incorrect media filter settings. First, double check that you have enabled the media filters <https://wiki.lyrasis.org/display/DSDOC9x/Mediafilters+for+Transforming+DSpace+Content#MediafiltersforTransformingDSpaceContent-Enabling/DisablingMediaFilters> you want to use (more details in the configuration reference <https://wiki.lyrasis.org/display/DSDOC9x/Configuration+Reference#ConfigurationReference-ConfiguringMediaFilters>). For example, to use the "PDFBox JPEG Thumbnail" filter you would check that dspace.cfg includes the lines:
filter.plugins = PDFBox JPEG Thumbnail and plugin.named.org.dspace.app.mediafilter.FormatFilter = org.dspace.app.mediafilter.PDFBoxThumbnail = PDFBox JPEG Thumbnail Second, if you are running the command with -p to apply limited filters, you could check that the plugin name matches your config: [dspace]/bin/dspace filter-media -p "PDFBox JPEG Thumbnail" Best, Lia On Thursday, March 5, 2026 at 4:02:32 AM UTC-5 [email protected] wrote: > I got the following error when trying to run my media filter to generate a > thumbnails for my books. > > ERROR:Unknon MediaFilter specified (either from command-line or in > dspace.cfg): 'PDFThumbnail' > > Any help is greatly appreciated, > > Wanangwa. > -- All messages to this mailing list should adhere to the Code of Conduct: https://lyrasis.org/code-of-conduct/ --- You received this message because you are subscribed to the Google Groups "DSpace Technical Support" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/dspace-tech/5e48b688-006e-408a-927a-b067166d201cn%40googlegroups.com.
