Segmentation fault when opening videos

[Jose Gómez]

After upgrade to the latest Ubuntu beta, gwenview is crashing with a segmentation fault whenever I try to open a video.

ProblemType: Bug
DistroRelease: Ubuntu 20.10
Package: gwenview 4:20.08.1-1
ProcVersionSignature: Ubuntu 5.4.0-49.53-generic 5.4.65
Uname: Linux 5.4.0-49-generic x86_64
ApportVersion: 2.20.11-0ubuntu49
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Thu Oct 8 01:19:26 2020
InstallationDate: Installed on 2020-08-19 (49 days ago)
InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731)
SourcePackage: gwenview
UpgradeStatus: Upgraded to groovy on 2020-10-06 (1 days ago)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jose Gómez (adler-dreamcoder)]

For anyone else with this issue, I was able to work around it by switching from the VLC to the GStreamer backend for Phonon:

    sudo apt-get install phonon4qt5-backend-gstreamer phonon4qt5settings

Then running:

    /usr/bin/phononsettings

Finally go to the "Backend" tab, select "Phonon GStreamer" and the up arrow to move it to the top. Then OK to exit the application.