https://bugs.kde.org/show_bug.cgi?id=403944
Bug ID: 403944
Summary: Stabilizing 30fps clips in 60fps project problems
Product: kdenlive
Version: 18.12.1
Platform: MS Windows
OS: MS Windows
Status: REPORTED
Severity: normal
Priority: NOR
Component: Effects & Transitions
Assignee: vpi...@kde.org
Reporter: czart.and...@gmail.com
Target Milestone: ---
SUMMARY
In some specific cases stabilization does not produce good results if a 30fps
videoclip is stabilized in a 60fps project. The problem occurs when something
on the video moves from the opposite directions (for example when you're moving
form left to right, and a car moves from right to left). (Link to an example is
attached.)
STEPS TO REPRODUCE
1. Create a 60fps project.
2. Import a 30fps video to the project bin.
3. Stabilize the video, then add it to the timeline, then render the project.
OBSERVED RESULT
The moving objects are strange on the stabililized video when something on the
video moves from the opposite directions (for example when you're moving form
left to right, and a car moves from right to left). (Link to an example is
attached.)
EXPECTED RESULT
If the 30fps video is stabilized in a 30fps project, the result is a well
stabilized video.
SOFTWARE/OS VERSIONS
Windows:
MacOS:
Linux/KDE Plasma:
(available in About System)
KDE Plasma Version:
KDE Frameworks Version:
Qt Version:
ADDITIONAL INFORMATION
Well, you might ask why would I stabilize a 30fps video in a 60fps project. I
shoot lots of videos with an actioncamera, and when I have light I use 60fps,
but at night I use 30 fps. When I edit the videos, the final video will be a
60fps video, so I use both 30fps and 60fps videos in my project.
One possible solution would be to stabilize, and render the 30fps videos in a
30fps project one by one, but as I shoot lots of short clips, that would take
lots of time.
(My workaround is that I use a script in a linux virtual machine to stabilize
my videos automatically one after an another using ffmpeg, which doesn't change
the framerate. Then I add the stabilized videos to kdenlive.)
Here is a videoclip for demonstration: (the tuktuk and the second taxi looks
really strange)
https://drive.google.com/open?id=1Ro5ZC93Fg9xrcN60poHketisCzFm6Cg1
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