Bug 409023

Summary:	Kdenlive unusable - drastic drop of performance
Product:	[Applications] kdenlive	Reporter:	Lukas Remis <lukas.remis>
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED WORKSFORME
Severity:	normal	CC:	fritzibaby, julius.kuenzel
Priority:	NOR	Flags:	fritzibaby: timeline_corruption+
Version First Reported In:	19.04.2
Target Milestone:	---
Platform:	Ubuntu
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Lukas Remis 2019-06-22 08:44:44 UTC

SUMMARY

What the hell has just happend to Kdenlive ? I've updated to 19.04.2, and the program is unusable. The performance is a disaster. It's not possible to playback two overlayed video tracks without lags and jumpy sound. (I'm using 16 Core Ryzen, 64 GB RAM, SSD Drive).

And, on top of that, I can't move with the started project to older version, because the file format is incompatible between version. 

That's the best way to loose users.


STEPS TO REPRODUCE
1. 
2. 
3. 

OBSERVED RESULT


EXPECTED RESULT


SOFTWARE/OS VERSIONS
Windows: 
macOS: 
Linux/KDE Plasma: Ubuntu 18.10 (Gnome 3.30.1)
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 emohr 2019-06-22 11:44:47 UTC

Please try with the current Kdenlive AppImage version 19.04.2f to see if there are any packaging issues https://files.kde.org/kdenlive/release/ 

If the problem/issue doesn't occur when using the AppImage, then it's your configuration or packaging.

Comment 2 Lukas Remis 2019-06-22 11:48:33 UTC

I am using that version, from appimage. No change in performance. Version 18 was working incomparably better.

Comment 3 emohr 2019-06-22 15:42:04 UTC

It could be that you have some left over from a previous Kdenlive installation.

Delete Kdenliverc, kdenliveui.rc and kdenlive-appimagerc to make sure you have no left over from a previous Kdenlive version. Details see here: https://community.kde.org/Kdenlive/Configuration. 

Maybe delete this files as well: /usr/share/config.kcfg, kdenlivesettings.kcfg

Comment 4 Julius Künzel 2021-03-24 15:46:43 UTC

Can you please update to the latest version (20.12.3 at the moment, https://kdenlive.org/en/download/) and report here whether this is still happening?

Please take also @emohr's instructions above into account

Comment 5 Bug Janitor Service 2021-04-08 04:33:27 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 6 Bug Janitor Service 2021-04-23 04:33:17 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!

Comment 7 Lukas Remis 2021-05-31 06:31:54 UTC

It's fine in 21.04.1