https://bugs.kde.org/show_bug.cgi?id=361360
Bug ID: 361360
Summary: git master - playback speed/framerate slows WAY down
when using video clips in multiple tracks in timeline
(video example included)
Product: kdenlive
Version: unspecified
Platform: Ubuntu Packages
OS: Linux
Status: UNCONFIRMED
Severity: normal
Priority: NOR
Component: User Interface
Assignee: j...@kdenlive.org
Reporter: jesse.dub...@gmail.com
See video for example and narrated details.
When I have multiple video clips in the timeline on different video tracks, and
they're on top of each other, the playback speed & frame rate slows WAY down.
Reproducible: Always
Steps to Reproduce:
1. Put multiple clips in timeline. Stack them on top of each other so they're
overlaying each other in timeline.
2. Playback project.
3.
Actual Results:
When the timeline position cursor crosses over the area where there are
multiple video clips on top of each other, playback speed slows down
significantly. Regardless of if there are any compositing effects on any of the
clips or not.
Expected Results:
Playback speed should be a LOT smoother, even realtime, especialy on a machine
like mine (AMD FX(tm)-8150 Eight-Core Processor, 8GB DDR3 RAM, Nvidia Geforce
GTX 660 graphics).
Bug reported while using Kdenlive 16.07.70 git master build via kdenlive-master
ppa. Ubuntu 16.04 x64, Unity 7.4.0 desktop environment. Kdenlive is using CPU
for operations, but Ubuntu is using the latest Nvidia proprietary graphics
driver for video processing -- if that makes a difference.
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