Bug 433704

Summary:	Saving while Kdenlive is still opening a project leads to "scene list is corrupted"
Product:	[Applications] kdenlive	Reporter:	Larsen <larsen007>
Component:	User Interface & Miscellaneous	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED FIXED
Severity:	normal	CC:	berndmj, fritzibaby
Priority:	NOR	Keywords:	needs_verification, triaged
Version First Reported In:	24.12.0	Flags:	fritzibaby: Brainstorm+
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:
Attachments:	Project to reproduce the problem

Description Larsen 2021-02-27 14:19:08 UTC

STEPS TO REPRODUCE
1. Open a rather large project
2. Press Ctrl+S to save the project while Kdenlive is still in the process of loading (counting references of a clip as it seems)

OBSERVED RESULT
Error message "Cannot write to file c:/test.kdenlive, scene list is corrupted."

EXPECTED RESULT
Kdenlive should show a warning, wait for the project to finish loading, or simply ignore the save command.

SOFTWARE/OS VERSIONS
Windows: 10

ADDITIONAL INFORMATION
The project where I noticed this has a runtime of only 5 minutes, and only a small number of clips, but e.g. one of those is used in ~80 places. CPU is a i3-2125 so rather old (but not having any general performance problems with Kdenlive).

Comment 1 Jean-Baptiste Mardelle 2021-02-27 15:30:56 UTC

thanks for your report. indeed, save should be disabled while loading.. will work on it

Comment 2 Bernd 2024-12-24 00:53:51 UTC

Hi and thank you for your patience.

Can you please check whether this issue still exists in the latest version 24.12.0?

If yes, please update this report to reflect the new version and set the status to CONFIRMED.

If it works now like you expect it would, you may change the status of this report to RESOLVED - FIXED.

At any rate, this report will be closed if there is no activity for the next 30 days.

Comment 3 Larsen 2024-12-24 19:59:20 UTC

Problem still exists, but now crashes Kdenlive.

Is there an easier way to provide a crash report than described in https://kdenlive.org/en/bug-reports/ ?
If not, please try to reproduce yourself. I just added five random clips to a project and then inserted one region of one clip into the timeline multiple times.

Comment 4 emohr 2024-12-25 16:15:02 UTC

On Windows it’s difficult to create a crash report (back-trace) as you have to build Kdenlive by craft first.

I tried to reproduce the issue according your steps in the initial post with a large project I have. No success as Kdenlive doesn’t interrupt the loading process while hitting “Ctrl+S”.

I tried to reproduce the crash according your steps in the 3th post inserting the same clip-zone several times into the timeline. No success.

What type of clip do you use?
Does the clip type match the project settings?
Can you upload here your project file so I can have a look?

Comment 5 Larsen 2024-12-25 18:44:08 UTC

Created attachment 176876 [details]
Project to reproduce the problem

Comment 6 Larsen 2024-12-25 18:45:11 UTC

I have attached a test project (removed the unused clips). The used clip has been downloaded using 4K Video Downloader from https://www.youtube.com/watch?v=lylCYkgC63Q

Comment 7 Jean-Baptiste Mardelle 2025-05-20 07:13:52 UTC

Save seems to be correctly disabled now when opening a project, and I cannot reproduce the issue.
Could you test with the latest 25.04.1 version?

Comment 8 Larsen 2025-05-21 14:17:00 UTC

I wasn't able to reproduce the problem with 25.04.1 anymore, so this seems to have been fixed.