Considering donating if you found my post helpful 😊
I was trying to run mkvtoolnix-gui which is the GUI version of mkvtoolnix, but it refused to launch with this error message:
(mkvtoolnix-gui:2238305): GStreamer-CRITICAL **: 22:44:31.327: gst_element_link_many: assertion 'GST_IS_ELEMENT (element_2)' failed
Segmentation fault
Solution:
If you are on Debian, which I am, you just need to install gstreamer1.0-plugins-good, gstreamer1.0-plugins-good, gstreamer1.0-plugins-bad, and gstreamer1.0-plugins-ugly
$ sudo apt install gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-plugins-bad gstreamer1.0-plugins-ugly
More information: https://gstreamer.freedesktop.org/modules/gst-plugins-good.html
Considering donating if you found my post helpful 😊