https://bugs.kde.org/show_bug.cgi?id=414006
Bug ID: 414006
Summary: Spacer tool is prohibitively slow with many timeline
clips
Product: kdenlive
Version: git-master
Platform: Compiled Sources
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: User Interface
Assignee: j...@kdenlive.org
Reporter: airbagg...@gmail.com
Target Milestone: ---
Created attachment 123823
--> https://bugs.kde.org/attachment.cgi?id=123823&action=edit
callgrind output from when trying to use the time slicing tool with
SUMMARY
When trying to use the spacer tool to close gaps in the video where I've cut
pieces out and rearranged,
STEPS TO REPRODUCE
1. Have video with many clips in the timeline, cut it up and have lots of gaps
(I'm talking about 50+ little segments)
2. Use the spacer tool to try and close the gaps where there are many clips to
the right
OBSERVED RESULT
Program hangs for approximately 10 seconds before clips jump to their new
position.
EXPECTED RESULT
Clips should move much more quickly. <100ms ideally, maybe <1s minimally.
System info:
CPU: Intel Core i7-5820K @ 3.3GHz, 12-core
Memory: 48 GiB
OS: Ubuntu 19.10 eoan 64-bit
I've run just that operation with the valgrind tool callgrind and generated
profiling information. I was clicking around in it, but couldn't really work it
out. It looks maybe like it's an MLT problem with just moving lots of clips...
?
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