Bug 487551

Summary:	Shape Adaptive Blur Preformance Issues When Applied to Image Clips
Product:	[Applications] kdenlive	Reporter:	alright.okay
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	CONFIRMED ---
Severity:	minor	CC:	contatodmc, fritzibaby
Priority:	HI	Keywords:	triaged
Version First Reported In:	24.12.3
Target Milestone:	---
Platform:	Other
OS:	Microsoft Windows
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description alright.okay 2024-05-25 20:58:15 UTC

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SUMMARY
The Shape Adaptive Blur filter is extremely resource intensive even when applied to an image clip. It should be a lot more efficient when applied to an image clip. For example, if I enable the felter on an image clip, then extract the frame, and replace the clip with the new clip, the preformance issues no longer occur.

STEPS TO REPRODUCE
1. Put an image clip in the timeline.
2. Apply Shape Adaptive Blur to the clip
3. Playback or Render.

OBSERVED RESULT
Massive preformance issues occur when they should not occur.

EXPECTED RESULT
There should be little preformance hit.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Ultramarine Linux kuma 39 (KDE Plasma Edition) x86_64
Kdenlive: kdenlive 23.08.5

Comment 1 emohr 2025-03-01 11:29:34 UTC

I tested it with Kdenlive 24.12.2 on Win10 and a PNG and MPG4 file and the Shape Adaptive Blur has no effect on the picture.

Comment 2 Dijalvan 2025-04-12 21:11:26 UTC

Consigo editar os videos normalmente sem nenhum problema, mas depois de renderizado a reprodução do video onde é pra ter imagem fotográfica e também textos não são reproduzidos apenas fica uma tela preta nu lugar.

Comment 3 emohr 2025-04-13 08:57:38 UTC

Translated to english:

I can edit the videos normally without any problem, but after rendering, the video playback where there is supposed to be a photographic image and also texts is not played back, there is just a black screen in place.