https://bugs.kde.org/show_bug.cgi?id=493586
Bug ID: 493586
Summary: When recording video, the mouse pointer motion is not
properly recorded leading to jerky movements
Classification: Applications
Product: Spectacle
Version: git-master
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: General
Assignee: noaha...@gmail.com
Reporter: darkdefe...@gmail.com
CC: k...@david-redondo.de
Target Milestone: ---
Created attachment 174027
--> https://bugs.kde.org/attachment.cgi?id=174027&action=edit
Video showcasing the jerky mouse movement issue
SUMMARY
When recording video in Spectacle, it seems like the mouse position is not
properly updated and frames are dropped if the rest of the content of the
captured screen is drawn. (Starts to happen around 3 seconds into the video)
If you force redraw, of the captured region, it seems like the mouse position
is updated.
In the attached example video, I'm using Blender and first moving the cursor in
a circle, notice that the mouse position seemingly freezes and then jumps to
where I actually moved it a few moments later.
This even more obvious later when I'm drawing in Blender. You can see how the
cursor position in the video stops updating after certain stokes and then
teleports to the the actual mouse position when I start the next stroke.
STEPS TO REPRODUCE
1. Capture a rectangular region on the desktop.
2. Move the mouse around without interacting with any windows
3. Notice that the captured mouse movement in the video is not captured
correctly.
OBSERVED RESULT
A lot of video frames with mouse movement in them has been dropped.
EXPECTED RESULT
The video should contain smooth and accurate mouse movements that matches the
actual mouse movements during recording.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Gentoo Linux
KDE Plasma Version: 6.1.5
KDE Frameworks Version: 6.6.0
Qt Version: 6.7.2
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