https://bugs.kde.org/show_bug.cgi?id=419325
Bug ID: 419325
Summary: Random video corruption during transitions
Product: kdenlive
Version: 19.12.3
Platform: Ubuntu Packages
OS: Linux
Status: REPORTED
Severity: major
Priority: NOR
Component: Effects & Transitions
Assignee: vpi...@kde.org
Reporter: mike.schm...@gmail.com
Target Milestone: ---
SUMMARY
Overlapping two videos or still images and implementing a wipe, at random
during timeline playback, video will corrupt during transition periods. If the
problem occurs, moving the timeline back and playing again will often render
the transition correctly. Rendering the file also exhibits random video
corruption during transitions.
STEPS TO REPRODUCE
1. This occurs with transitions between videos as well as transitions between
two static JPEG images. Seems more likely to happen with longer transitions,
but can occur with very quick wipes as well. The issue seems to be exacerbated
when an involved clip has gamma correction and saturation adjustments.
2. CPU is Ryzen5 3600x, GPU is a new MSI GTX-1650 Super with the
nvivia-driver-440 installed on Ubuntu 20.04 LTS daily build. Have updated
packages a couple of times with the same result. GPU works as expected when
given a workout playing games. GPU Acceleration is on in the program and the
test in the program says it is ok and active.
3. I have rendered projects with Windows version with Intel Hardware CPU only
and did not see the issue on two other machines.
OBSERVED RESULT
Green and purple hued frames during the wipe, corrupt rendered frames.
EXPECTED RESULT
smooth wipe as usual
SOFTWARE/OS VERSIONS
Windows:
macOS:
Linux/KDE Plasma: Ubuntu 20.04 LTS Focal Fossa (Development Branch) (all
packages up to date)
GNOME 3.36.0
ADDITIONAL INFORMATION
kdenlive was installed from GNOME Software from the GUI.
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