Bug 358599

Summary:	15.13.0 git master - adding title clip to timeline above clip causes flicking issue during playback. (video example included)
Product:	[Applications] kdenlive	Reporter:	Unknown <null>
Component:	User Interface & Miscellaneous	Assignee:	Jean-Baptiste Mardelle <jb>
Status:	RESOLVED FIXED
Severity:	minor	CC:	null
Priority:	NOR
Version First Reported In:	unspecified
Target Milestone:	---
Platform:	Arch Linux
OS:	Linux
URL:	https://youtu.be/fr494gOuang
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Unknown 2016-01-26 18:19:09 UTC

Adding a title clip in timeline on a track with composite enabled over a clip (without affine transition) causes distortion at the top of the project monitor during playback.

Applying the affine effect seems to stop this from happening, but I thought the point of adding composite in the tracks by default was supposed to eliminate the need for adding things like affine or composite transitions, yeah?

Also, rendering timeline zone doesn't show this error; it's only during playback in project monitor.

Reproducible: Always

Steps to Reproduce:
1. Create title clip
2. Insert title clip in timeline over another clip, then remove affine transition (seems to be applied by default when adding a title clip)
3. Play that specific area in timeline.

Actual Results:  
Top portion of video in project monitor flickers with clip beneath the title clip.

Expected Results:  
No flickering.

Testing while using Kdenlive git master build version 15.13.0.r6964.67e3f60-1 on Antergos Linux x64, GNOME 3.18.2.

Comment 1 Unknown 2016-01-26 18:20:00 UTC

See video in URL field of this bug for example.

Comment 2 Unknown 2016-01-26 18:23:20 UTC

I should also add that the video clip beneath the title clip is 1920x800, while the project dimensions are 1920x1080.

Comment 3 Unknown 2016-03-08 21:32:35 UTC

This issue doesn't seem to be present anymore in latest builds.