https://bugs.kde.org/show_bug.cgi?id=419030
--- Comment #2 from Giampiero Salvi <giampisa...@gmail.com> --- (In reply to Albert Astals Cid from comment #1) > Your okular is ancient > > *** This bug has been marked as a duplicate of bug 393478 *** Hi Albert, this it the version supported by the current LTS version of Ubuntu via apt. If I install the snap version of okular (1.9.3), that is supposed to be the most recent version available on Ubuntu 18.04, the program does not crash, but it does not play videos either in presentation mode. I get this warning then: WARNING: bool Phonon::FactoryPrivate::createBackend() phonon backend plugin could not be loaded I tried configuring backends but I could not find anything related to Phonon. Could you give me a hint? By the way, I had read the bug that you claim is a duplicate of this, before filing this but. However, I did not think it was a duplicate bug. The behavior was different and also the kind of files were different (in my case it was the audio crashing the program). Of course I may be wrong. Thank you Giampiero -- You are receiving this mail because: You are watching all bug changes.