Bug 408396

Summary: Frozen clips flicker once in the exported movie
Product: [Applications] kdenlive Reporter: lucky7tube
Component: Rendering & ExportAssignee: Jean-Baptiste Mardelle <jb>
Status: RESOLVED WORKSFORME    
Severity: normal CC: fritzibaby
Priority: NOR Flags: fritzibaby: timeline_corruption+
Version First Reported In: 19.04.1   
Target Milestone: ---   
Platform: Microsoft Windows   
OS: Microsoft Windows   
Latest Commit: Version Fixed/Implemented In:
Sentry Crash Report:
Attachments: A sample kdenlive-19.04.1 project for reproducing. counter.mp4 is the source media, and counter2.mp4 is an exported movie contains blank frames

Description lucky7tube 2019-06-06 22:26:33 UTC
Created attachment 120641 [details]
A sample kdenlive-19.04.1 project for reproducing. counter.mp4 is the source media, and counter2.mp4 is an exported movie contains blank frames

SUMMARY
With Kdenlive-19.04.1, the "Freeze" effect seems get improved than before.
However, it's got a new bug.
When a clip on the timeline gets Freeze effect applied, it is ok to preview in the project monitor, but after rendering, each frozen clips has it's own beginning flicker.
I mean, the very first frame of each frozen clip rendered well but followed by a few blank(white) frames and then gets valid again. (Please see attachments)

STEPS TO REPRODUCE
1. Import a video clip in the project bin
2. Place the clip on the timeline
3. (optional) Slice the clip into several pieces
4. Apply "Freeze" effect to (each sliced) clip(s)
5. Preview timeline, and it is just ok
6. Render

OBSERVED RESULT
Rendered movie contains a few blank(white) frames just after the beginning frame of (each) frozen clip

EXPECTED RESULT
Rendered movie should not have blank frames unless the timeline contains gaps between clips

SOFTWARE/OS VERSIONS
Windows: 7
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION
Comment 1 emohr 2021-03-04 19:12:18 UTC
As it has been a while since this was reported, can you please test and confirm if this issue is still occurring or if this bug report can be marked as resolved.

Please try with the latest version (https://kdenlive.org/en/download/)
Comment 2 Bug Janitor Service 2021-03-19 04:33:44 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 3 Bug Janitor Service 2021-04-03 04:33:39 UTC
This bug has been in NEEDSINFO status with no change for at least
30 days. The bug is now closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

Thank you for helping us make KDE software even better for everyone!