https://bugs.kde.org/show_bug.cgi?id=406024
Bug ID: 406024
Summary: composite transition between two color clips is
painfully slow
Product: kdenlive
Version: Appimage - Refactoring
Platform: Appimage
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Effects & Transitions
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 119145
--> https://bugs.kde.org/attachment.cgi?id=119145&action=edit
video showing the bug
Please see attached video.
STEPS TO REPRODUCE
1. Create two color clips of different colors.
2. Drag the two color clips to neighboring video tracks on the timeline,
partially overlapping in time.
3. Add the "Composite and transform" composition between the two clips. (you
don't even have to change any settings)
3. Play the project.
OBSERVED RESULT
When the playback cursor hits the composition, playback slows down
considerably. Note that sometimes the speed will be fine during the first
playback, but slow on subsequent playbacks. Even if the playback speed is
correct the first time, the transition is still very choppy, even on my 6-core
i7.
EXPECTED RESULT
Playback should not slow down.
SOFTWARE/OS VERSIONS
Kdenlive: 19.03.80 (kdenlive-19.03.80-674b5d3-x86_64.appimage)
OS: KDE neon 5.15 User Edition
KDE Plasma Version: 5.15.3
KDE Frameworks Version: 5.56.0
Qt Version: 5.12.0
CPU: Intel Core i7-990x Bloomfield (3.46 GHz hexa-core, Socket 1366)
RAM: 12GB DDR3
Video: EVGA NVIDIA GeForce GTX 980 Ti SC (GAMING ACX 2.0+?) w/ 6GB RAM (PCI
Express)
NVIDIA video driver: 415.27
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