Bug 388558

Summary: "Fade to/from Black" + "Speed" effects cause "Fade to/from Black" duplicates and change parameter values
Product: [Applications] kdenlive Reporter: Yakov <yakovassembler>
Component: Effects & TransitionsAssignee: Vincent PINON <vpinon>
Status: RESOLVED FIXED    
Severity: normal CC: e.vakhromtsev, fritzibaby, snd.noise
Priority: NOR Flags: fritzibaby: timeline_corruption+
Version: 17.12.0   
Target Milestone: ---   
Platform: Manjaro   
OS: Linux   
Latest Commit: Version Fixed In:
Attachments: The example project and the screenshot

Description Yakov 2018-01-05 11:12:20 UTC
Created attachment 109690 [details]
The example project and the screenshot

I have faced a strange behaviour of "Fade to/from Black" and "Speed" effects, when they are applied together to the same clip. "Fade" effects duplicates appear, and time values are changed to wrong numbers.

Steps:
1) Create a new project.
2) Add a clip on the timeline (I have used "Plasma browser integration" from YouTube (720p, MP4) as an example.
3) Add "Fade to Black" and "Fade from Black" effects, don't change default values (however, if they are changed to custom, the error appears too. Just as a precaution)
4) Add speed effect, set to 200%.
5) Save the project.
6) Reopen it.
7) Check clip effects and their parameters. There will be one extra "Fade to Black" effect, and maybe other "Fade" effects parameters will be changed.

As I have noticed, mostly "Fade to Black" is duplicated with a strange parameter, and sometimes "Fade from Black" changes its value too.

I have attached an example project (without a video, you can find it on YouTube) and a screenshot.
Comment 1 farid 2019-11-25 15:00:25 UTC
Cannot reproduce using daily appimage build. can you please test and close.
Comment 2 emohr 2021-02-28 16:08:47 UTC
It seems that this report is related to very old unmaintained version. A lot changed since then, especially the timeline got a complete rewrite and it is likely that this has been fixed.
Feel free to reopen this bug or create a new report if this is still happening with the latest version (https://kdenlive.org/en/download/)