Many thanks for your reply Abel! I've got a different example we can use and the file itself can be fetched from https://openrepositorydev.aut.ac.nz/bitstreams/9f8c8a76-9675-4ca4-9f54-86043d021a27/download
*bin/dspace filter-media -v -i '10292/18369'The script has startedThe following MediaFilters are enabled: Full Filter Name: org.dspace.app.mediafilter.JPEGFilterorg.dspace.app.mediafilter.JPEGFilterFull Filter Name: org.dspace.app.mediafilter.TikaTextExtractionFilterorg.dspace.app.mediafilter.TikaTextExtractionFilterFull Filter Name: org.dspace.app.mediafilter.ImageMagickVideoThumbnailFilterorg.dspace.app.mediafilter.ImageMagickVideoThumbnailFilterFull Filter Name: org.dspace.app.mediafilter.PDFBoxThumbnailorg.dspace.app.mediafilter.PDFBoxThumbnailPROCESSING: bitstream XXX (item: 10292/18369)File: TAKE THE TIME - New Zealand Tourism For All.mp4.jpgIM Thumbnail Param: -auto-orient VIDEO:/tmp/imthumb5373020262128477920.tmp[100] -thumbnail 275x350 /tmp/imthumb5373020262128477920.tmp.jpg ERROR filtering, skipping bitstream: Item Handle: 10292/18369 Bundle Name: ORIGINAL File Size: 54520644 Checksum: XXX (MD5) Asset Store: 0 Internal ID: XXXXorg.im4java.core.CommandException: Unknown encoder 'webp'Caused by: org.im4java.core.CommandException Unknown encoder 'webp'The script has completed* But it is not just this video bitstream that the video thumbnail won't generate for, it is any mp4 bitstream. On Wednesday, September 17, 2025 at 11:19:47 PM UTC+12 Abel Gómez wrote: > Hi Alex, > > do you mind sharing the problematic file with me? (I'm the one who > contributed the ImageMagickVideoThumbnailFilter). > > Cheers, > > Abel > > > El 17/09/2025 a las 6:20, alex buckley escribió: > > Hi DSpace community, > > We have a partner library running DSpace 7.6.3 on a RedHat server. > > Now the backend DSpace server has ImageMagick installed, and we are able > to successfully manually test ImageMagick webp conversion. > > However, when we manually run the filter-media script on an item the video > thumbnail generation fails with *org.im4java.core.CommandException: > Unknown encoder 'webp' - *see below output: > > *---* > > [dspace]# bin/dspace filter-media -v -i '10292/19016' > The script has started > The following MediaFilters are enabled: > Full Filter Name: > org.dspace.app.mediafilter.ImageMagickVideoThumbnailFilter > org.dspace.app.mediafilter.ImageMagickVideoThumbnailFilter > PROCESSING: bitstream XXX (item: 10292/19016) > File: Black and Pink Minimalist Welcome To My Channel YouTube Video > (1).mp4.jpg > IM Thumbnail Param: -auto-orient > VIDEO:/tmp/imthumb8300761135230282362.tmp[100] -thumbnail 257x350 > /tmp/imthumb8300761135230282362.tmp.jpg > ERROR filtering, skipping bitstream: > Item Handle: 10292/19016 Bundle Name: ORIGINAL File Size: 460491 Checksum: > XXX (MD5) Asset Store: 0 Internal ID: XXX > org.im4java.core.CommandException: Unknown encoder 'webp' > Caused by: org.im4java.core.CommandException Unknown encoder 'webp' > The script has completed > [dspace]# > > --- > > Has anyone else in the DSpace community encountered this error before and > if so how did you approach fixing it? > > Thanks, > Alex > > -- > All messages to this mailing list should adhere to the Code of Conduct: > https://www.lyrasis.org/about/Pages/Code-of-Conduct.aspx > --- > 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 dspace-tech...@googlegroups.com. > To view this discussion visit > https://groups.google.com/d/msgid/dspace-tech/2638f0a3-8f18-427f-9fe3-2e76603d0412n%40googlegroups.com > > <https://groups.google.com/d/msgid/dspace-tech/2638f0a3-8f18-427f-9fe3-2e76603d0412n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > > -- > Abel Gómez Llana, PhD > ab...@gomez.llana.mehttps://abel.gomez.llana.me > > -- All messages to this mailing list should adhere to the Code of Conduct: https://www.lyrasis.org/about/Pages/Code-of-Conduct.aspx --- 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 dspace-tech+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/dspace-tech/c00dfe2b-9a85-48e5-920e-c3da0b41b4d1n%40googlegroups.com.
