https://bugs.kde.org/show_bug.cgi?id=527901
Bug ID: 527901
Summary: Time Remapping points sometimes lost when clicking
points in timeline or saving and reloading
Classification: Applications
Product: kdenlive
Version First 26.08.2
Reported In:
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Timeline & Editing
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
Created attachment 197715
--> https://bugs.kde.org/attachment.cgi?id=197715&action=edit
Example video with missing Time Remap.
DESCRIPTION
When I enable Time Remapping in a video clip, sometimes the points are lost
when I save the video or click on points in the keyframe editor.
STEPS TO REPRODUCE
1. Import a clip into the timeline.
2. Right-click the video clip and check "Time Remap".
3. Play and pause the project monitor, and add a keyframe under Time Remap.
- Sidenote: Why does Time Remap not allow you to add a keyframe at the
current play point, only once you seek the video further? Though you can seek
left and right by one frame to get the same effect.
4. Click to the final keyframe and back to the center one.
I managed to reproduce the video using both a microscope video with
inconsistent frame rate, and `yt-dlp 'https://youtu.be/fSmfObn7QpA'`, with and
without switching to a profile matching the clip's frame rate.
OBSERVED RESULT
The intermediate keyframe often disappears. The video appears to change speed
at first, but this often gets lost upon undo and redo.
When saving (after undo and redo?), the time remap often disappears, while the
audio speed remains altered, resulting in an AV desync.
In the project file, there is one identity `timeremap > time_map` and one
`time_map` with the keyframes still present.
In one of my tests, after save and reload, the time remap was lost but the
video still changed speed in preview. However the audio was not sped up before
*or* after saving.
EXPECTED RESULT
Time remap data is not lost.
SOFTWARE/OS VERSIONS
Operating System: Arch Linux
KDE Plasma Version: 6.8.1
KDE Frameworks Version: 6.31.0
Qt Version: 6.12.0
Kernel Version: 7.2.10-arch1-1 (64-bit)
Graphics Platform: Wayland
Processors: 8 × Intel® Core™ i7-8559U CPU @ 2.70GHz
Memory: 16 GiB of RAM (15.5 GiB usable)
Graphics Processor: Intel® Iris® Plus Graphics 655
Manufacturer: Intel(R) Client Systems
Product Name: NUC8i7BEH
System Version: J72992-303
Reproduced on Flatpak and AppImage, and IIRC system Kdenlive as well.
ADDITIONAL INFORMATION
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