Bug 503443 - Wipe effects (“Lumas”) disappear with some user-defined project resolutions -- Wipe Effekte ("Lumas") verschwinden bei einigen benutzerdefinierten Projektauflösungen.
Summary: Wipe effects (“Lumas”) disappear with some user-defined project resolutions -...
Status: REPORTED
Alias: None
Product: kdenlive
Classification: Applications
Component: Video Effects & Transitions (other bugs)
Version First Reported In: unspecified
Platform: Kubuntu Linux
: NOR normal
Target Milestone: ---
Assignee: Jean-Baptiste Mardelle
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2025-04-27 20:53 UTC by fehler-im-programm
Modified: 2026-02-10 12:24 UTC (History)
2 users (show)

See Also:
Latest Commit:
Version Fixed/Implemented In:
Sentry Crash Report:

Attachments
Video - "Bug verschwundene Lumas bei Änderung Projekauflösung.mp4" (1.87 MB, video/mp4)
2025-04-27 20:53 UTC, fehler-im-programm 		Details
Screenshot (37.96 KB, image/png)
2026-01-15 19:29 UTC, fehler-im-programm 		Details
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Description fehler-im-programm 2025-04-27 20:53:44 UTC 
Created attachment 180715 [details]
Video - "Bug verschwundene Lumas bei Änderung Projekauflösung.mp4"

Flatpak 25.04.0 (unspecified)

STEPS TO REPRODUCE
1) See Attachment Video.
2) Compare Minute 0:12 with Minute 0:45.

OBSERVED RESULT
Other, user-defined project resolution: Effects with preview images have disappeared.

EXPECTED RESULT
Effects with preview images present (independent of project resolution).
Comment 1 Bernd 2026-01-15 17:29:53 UTC 
I cannot reproduce this bug on 25.12.0 Flatpak.

Is this bug report about the preview thumbnails in the list of possible wipes, or is it about custom wipes (.pgm files) not being in the list?

Does this also happen in 25.12.0?
Comment 2 fehler-im-programm 2026-01-15 19:28:40 UTC 
The problem also occurs in 25.0.12.

However, only when selecting a profile from “custom” project settings (see screenshot).

When changing the project settings (here to custom 640x480 25fps), not only do the preview images disappear, but the number of effects is also drastically reduced. It starts with “None (Resolve)” and ends with “Matrix Waterfall Vertical.”

Without custom project changes, the wipe effects only end at xluma.pgm.

Translated with DeepL.com (free version)
Comment 3 fehler-im-programm 2026-01-15 19:29:11 UTC 
Created attachment 188562 [details]
Screenshot