Hello Carolyn,
to be fair, in the original discussion (
https://groups.google.com/g/dspace-tech/c/Pz5zGJjAS1w?pli=1) using MPEG
instead of VIDEO also hitted another bug in ImageMagick and the filter
still didn't work after changing that line (that other error was
reported by the other user, but I didn't test anything).
In any case, it's weird that no errors are reported... Without logs, I
cannot give you any more guidance.
Right now, I'm running DSpace 9.1, but we have the filter running with
no issues since DSpace 7.5 (we've used 7.5, 7.6, 7.6.1, 8.0 and 9.1 so far).
We started using Debian 11, and as I said, now we run Debian 12.12 with
the default repositories.
Which system are you running? Ubuntu 20.04? Can you test on a more
modern system?
Best regards,
Abel
El 31/10/2025 a las 22:00, C S escribió:
Hello all,
Thanks Abel for the solution to the issue with the PDF files.
Unfortunately, the problem with the mp4 files persists. It says the
script is running, but the mp4 thumbnail is never produced, and no
error is created. I tried changing VIDEO to MPEG on line 66 of
DSpace/dspace-api/src/main/java/org/dspace/app/mediafilter/ImageMagickVideoThumbnailFilter.java,
and it made no difference. I've doublechecked the configuration
settings
(https://wiki.lyrasis.org/display/DSDOC7x/ImageMagick+Media+Filters).
Nothing seems to work. Does anyone have any other suggestions? Abel,
which version of DSpace are you running, if you don't mind me asking?
Thanks,
Carolyn.
On Tue, Oct 28, 2025 at 5:05 PM Abel Gómez <[email protected]> wrote:
Hi Carolyn,
we have the "ImageMagick Video Thumbnail" succesfully working on
our production server
(https://hdl.handle.net/11705/SISTEDES/SEMINARIOS).
We're running Debian 12, and ImageMagick 6.9.11-60.
Regarding your problem with video Thumbnails, I think it's related
to this issue discussed long ago:
https://groups.google.com/g/dspace-tech/c/Pz5zGJjAS1w?pli=1
I think it's because you're using an old version of ImageMagick
which expects that MP4 files are specified as "MPEG" rather than
as "VIDEO" when explicitly setting the video file format (exactly,
here:
https://github.com/DSpace/DSpace/blob/2205bb18b1786b71d6cef876e67566d35c04bb49/dspace-api/src/main/java/org/dspace/app/mediafilter/ImageMagickVideoThumbnailFilter.java#L66).
That's my guess from inspecting the code.
Here's the commit when the developers of ImageMagick introduced
this breaking change
(https://github.com/ImageMagick/ImageMagick6/commit/4872c693299802cfe6677742867098f64440d9aa).
It was around version 6.9.11-31.
I have planned to send a PR to make that part of the code
configurable, but didn't have the time.
Regarding your issue with PDF files, is a configuration issue of
ImageMagick. See
https://wiki.lyrasis.org/display/DSDOC7x/ImageMagick+Media+Filters#ImageMagickMediaFilters-%22convert.im6:notauthorized%22errors
Best regards,
Abel
El 28/10/2025 a las 21:39, Carolyn Sullivan escribió:
Hello all,
Wondering if anyone has managed to produce thumbnails of mp4
files yet. If so, how did you do it? I have the most current
versions of ImageMagick, Ghostscript and ffmpeg on my server
(6.9.10-23, 9.50, and 4.2.7-0ubuntu0.1, respectively). I'm
running DSpace 7.6.2. I added filter.plugins = ImageMagick Video
Thumbnail to my local.cfg.dev <http://local.cfg.dev> file.
However, running sudo -u tomcat /var/dspace/bin/dspace
filter-media -i [collection handle] -v, it gives NO output for
video files, not even an error... and for pdfs, it's telling me:
org.im4java.core.CommandException: convert-im6.q16: attempt to
perform an operation not allowed by the security policy `PDF' @
error/constitute.c/IsCoderAuthorized/413
which seems to be possibly a separate problem.
Anyone see this before or have any idea as to the cause?
Thanks,
Carolyn.
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