Bug 384967

Summary:	Combining crop and position/zoom causes flickering artefact
Product:	[Applications] kdenlive	Reporter:	alt.bm-clx0252
Component:	Rendering & Export	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED FIXED
Severity:	normal	CC:	fritzibaby, kde-bugs
Priority:	NOR	Flags:	fritzibaby: timeline_corruption+ fritzibaby: timeline_corruption+
Version First Reported In:	17.08.1
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description alt.bm-clx0252 2017-09-22 17:24:59 UTC

Combining effects Edge Crop and Position And Zoom causes target clip to have flickering thin line on bottom in both preview and export.

Prepare:
* white background for your project to see problem clearly
* some clip smaller than your project, preferably also white

Reproduce:
1) Open project
2) Add your white background to video 1
3) Add your clip to video 2
4) Add Position and Zoom to clip in video 2
5)     Click Adjust to original size
6)     Center the clip position
7) Add Edge Crop to clip in video 2
8) Set Right crop to 1 pixel
9) Observe artefacts on bottom of clip

Artefacts are also present in export, at least for .webm

Comment 1 emohr 2018-11-04 08:56:21 UTC

This seems similar to Bug 384967 where the size of clips and picture doesn’t match the project settings.

Comment 2 emohr 2018-11-04 09:26:25 UTC

This seems similar to Bug 397276 where the size of clips and picture doesn’t match the project settings.

Comment 3 emohr 2021-02-28 16:00:15 UTC

This report is related to a unmaintained version. A lot changed since then, especially the timeline got a complete rewrite and it is likely that this has been fixed.
Feel free to reopen this bug or create a new report if this is still happening with the latest version (https://kdenlive.org/en/download/)