https://bugs.kde.org/show_bug.cgi?id=404680
Bug ID: 404680
Summary: timeline refactor 2019-02-21_Composition effect
issues.
Product: kdenlive
Version: unspecified
Platform: Other
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: User Interface
Assignee: j...@kdenlive.org
Reporter: evors...@protonmail.com
Target Milestone: ---
SUMMARY
The composition effect is only applied from the first frame of a clip down to
the next clip. This makes sense only in about 50% of the cases where I need a
transition composition.
BACKGROUND STORY
When doing cross fades in audio included in video clips, it is easy and quick
to use two video and two audio tracks, and then just let the videos alternate
on the tracks. This means that 50% of the time I want to do a cross fade the
video I want to fade to is on the video track above. When I select the top clip
and add composition, the composition effect is generated properly.
However, when the video clip is below the previous one is where the fun starts.
When I select the bottom clip and add the composition, the composition is
automatically added between the video clip and it's audio track, which makes no
sense. I cannot imagine a case where one would want to have a composition
between video and audio.
If I select the top clip, and add the composition, then the composition is
generated from the first frame of the top clip to the last frame of the
previous clip. However, I want to generate a composition from the first frame
of the bottom clip to the last frame of the top clip.
So, I drag the composition over to the end of the top clip, aligning the last
frame of the composition with the last frame of the top clip. Now I find out
that the first frame of the composition is not adjustable by dragging the
mouse.
So, I align the first frame of the composition with the first frame of the
bottom clip, and then I am able to drag the last frame of the composition to
align it with the last frame of the top clip.
So, there is a workaround. Unfortunately the first time I tired this my UI
froze. I have not been able to replicate the UI freeze again, but there are a
few UI bugs in adding compositions.
In my latest test of the timeline refactoring branch today, I found it quite
stable and use-able.
STEPS TO REPRODUCE
0. Generate a new project with at least two video and two audio tracks.
1. Add three video clips with audio to the timeline.
2. First video clip to the bottom video track
3. Second video clip to the top video track
4. Thirds video clip to the bottom video track
5. Move clips so that they overlap by a few frames.
6. Select video clip 3
7. Righ-click and add composition
OBSERVED RESULT
Composition added between video clip and it's own audio track.
EXPECTED RESULT
Composition added between top and bottom video clip, extending from first frame
of bottom clip to last frame of top clip.
SOFTWARE/OS VERSIONS
Arch Linux, updated on 2019-2
ADDITIONAL INFORMATION
1. I seriously miss being able to add a composition by just dragging on the
clip.
2. First frame of the composition should be adjustable by dragging the front of
the composition.
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