It seems that kde-apps/kamoso requires media-plugins/gst-plugins-{libpng,jpeg}. If you run it without, it will complain: error debugMessage: Your GStreamer installation is missing a plug-in. error on: "filesrc location=\"/home/branko/Pictures/1440x900.jpg\" ! decodebin ! imagefreeze ! videoconvert ! vertigotv name=last" "/var/tmp/portage/media-libs/gst-plugins-base-1.12.4/work/gst-plugins-base-1.12.4/gst/playback/gstdecodebin2.c(4600): gst_decode_bin_expose (): /GstPipeline:pipeline61/GstDecodeBin:decodebin61:\nno suitable plugins found:\nMissing decoder: JPEG (image/jpeg, width=(int)1440, height=(int)900, sof-marker=(int)0)\n" And if you click on the bottom left corner ("hamburger icon"), it opens the empty list, if you close it and click second time it crashes the application. If you install the following gstreamer plugins it doesn't crash, and it seems it uses "random/first" image from ~/Pictures to show example effects applied to it when clicked on the "hamburger icon", clicking multiple times doesn't crash the app anymore. I'm not sure if both plugins are needed or if any other is missing, most likely depends on which type of file it tries to use, that is why I installed both. Tested on ~amd64 system with kde plasma, using kde-apps/kamoso-18.04.0
The bug has been closed via the following commit(s): https://gitweb.gentoo.org/proj/kde.git/commit/?id=37ee6bcd19885338dafcea07f1a389f0680daf72 commit 37ee6bcd19885338dafcea07f1a389f0680daf72 Author: Andreas Sturmlechner <asturm@gentoo.org> AuthorDate: 2018-05-03 11:34:39 +0000 Commit: Andreas Sturmlechner <asturm@gentoo.org> CommitDate: 2018-05-03 11:34:39 +0000 kde-apps/kamoso: Add missing RDEPENDs Closes: https://bugs.gentoo.org/654602 Package-Manager: Portage-2.3.33, Repoman-2.3.9 kde-apps/kamoso/kamoso-18.04.49.9999.ebuild | 2 ++ kde-apps/kamoso/kamoso-9999.ebuild | 2 ++ 2 files changed, 4 insertions(+)