Bug 428263 - Clip speed does not work on image sequences
Summary: Clip speed does not work on image sequences
Status: RESOLVED DUPLICATE of bug 429795
Alias: None
Product: kdenlive
Classification: Applications
Component: Effects & Transitions (show other bugs)
Version: 20.08.3
Platform: Other Linux
: NOR normal
Target Milestone: ---
Assignee: Vincent PINON
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-10-26 09:05 UTC by Leo
Modified: 2021-04-02 17:55 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In: 20.08.2
fritzibaby: timeline_corruption+

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Description Leo 2020-10-26 09:05:23 UTC 
SUMMARY

Clip speed does not work on image sequences


STEPS TO REPRODUCE
1. Add image sequence clip to timeline 
2. Right click, clip in timeline, Change Speed
3. Timeline playback / Render timeline

OBSERVED RESULT

Clip playback is stuck on first frame. Clip speed 100% works. Any other speed, slower (50%) or faster (200%) does not work.


EXPECTED RESULT

Image sequence plays at the specified speed

SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: openSuse Tumbleweed 20200819
(available in About System)
KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.73.0
Qt Version: 5.15

ADDITIONAL INFORMATION
Comment 1 Leo 2020-10-26 09:06:43 UTC 
Change clip speed works as expected on a normal video clip.
Comment 2 emohr 2020-11-01 15:51:28 UTC 
Thank you for reporting. Change speed on a picture make not a lot of sense, this is why it shows an error message on bottom left in version 20.08.2. 

Shorten or lengthen the picture as needed by adjust it with the mouse.
Comment 3 Leo 2020-11-02 10:15:53 UTC 
Please read the title and description of the bug report.

Image SEQUENCE and NOT a single / static image.

I have tested this, yet again with an IMAGE SEQUENCE clip and "Change Speed" does not work. For Image Sequences, this function is broken.
Comment 4 Jake 2020-12-20 12:39:50 UTC 
I am experiencing exactly the same bug than Leo.

SOFTWARE/OS VERSIONS

PureOS (based on Debian 9)
GNOME Shell 3.30.2
Qt Version: 5.11.3
Comment 5 farid 2021-03-11 15:11:00 UTC 
Neither speed change nor reverse work on image sequences. This is an MLT issue I think...
Comment 6 Julius Künzel 2021-04-02 16:53:17 UTC 
It is half a mlt and half a kdenlive issue I think.

The mlt issue is that reversing does only work for speed >=100%. I opened a issue upstream: https://github.com/mltframework/mlt/issues/693

The kdenlive issue is that the timewarp has no effect on slideshow clips and we have to scale the image duration (working on a fix).
Comment 7 Julius Künzel 2021-04-02 17:55:05 UTC 

*** This bug has been marked as a duplicate of bug 429795 ***
Comment 8 Julius Künzel 2021-04-02 17:55:45 UTC 
Git commit 5f65e06b45d802e92c0a26828f82745eb4c9c910 by Julius Künzel.
Committed on 02/04/2021 at 17:40.
Pushed by jlskuz into branch 'release/21.04'.

Fix change speed for slideshow clips
Related: bug 429795, bug 392670

M  +7    -0    src/bin/projectclip.cpp

https://invent.kde.org/multimedia/kdenlive/commit/5f65e06b45d802e92c0a26828f82745eb4c9c910