Bug 376915

Summary: Adding speed effect to Slideshow clip shrinks it to 0 on the timeline
Product: [Applications] kdenlive Reporter: Francesco <francesco.cimorelli>
Component: Video Effects & TransitionsAssignee: Vincent PINON <vpinon>
Status: RESOLVED DUPLICATE    
Severity: normal CC: snd.noise
Priority: NOR    
Version: 16.12.2   
Target Milestone: ---   
Platform: Fedora RPMs   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:
Attachments: Screencast of the bug

Description Francesco 2017-02-25 13:18:38 UTC
Created attachment 104216 [details]
Screencast of the bug

Hello. I am trying to create a timelapse.

To do this I add a slideshow clip based on ~1500 pictures.

After adding the clip to the timeline, I am trying to speed it up.

Whenever I select a speed different from 100% the clip shrinks to 0. I still tried rendering the video but the speed effect is not applied.
Comment 1 farid 2017-03-05 14:33:02 UTC
I can reproduce this, however please note that the speed effect in its current state is very buggy. we are doing a timeline refactoring that will solve all the problems caused by this effect.

Perhaps you could as a workaround reduce the speed duration to 1 frame that way you'll get the desired result?
Comment 2 Francesco 2017-03-05 20:34:43 UTC
Thank you farid for acknowledging the issue.

I am already creating the Slideshow clip with each frames 00:00:00:01 long. However, that is the limit and I need to use the speed effect if I want to go lower.

In the meantime I'll just Render the Slideshow clip and then re-encode the video and apply the speed effect (which works on a simple video clip).

Looking forward to the new update you mention.

Cheers
Comment 3 farid 2017-03-05 21:02:44 UTC
(In reply to Francesco from comment #2)
> Thank you farid for acknowledging the issue.
> 
> I am already creating the Slideshow clip with each frames 00:00:00:01 long.
> However, that is the limit and I need to use the speed effect if I want to
> go lower.
> 
> In the meantime I'll just Render the Slideshow clip and then re-encode the
> video and apply the speed effect (which works on a simple video clip).
> 
> Looking forward to the new update you mention.
> 
> Cheers

Maybe for something simple it works but careful using that effect since it causes problems like this: https://bugs.kde.org/show_bug.cgi?id=369585
Comment 4 Vincent PINON 2017-09-18 09:50:39 UTC

*** This bug has been marked as a duplicate of bug 369585 ***