Hello.

I'm using Kdenlive 6.5.0 (MLT/FFmpeg) on Ubuntu Studio 16.04.

I'm creating animations from some PNG images with transparent backgrounds. I use the "Transformation" and "Position & Zoom" effects to position and animate the images over another PNG as a background.

When rendering the animation, no matter what formatting or rendering properties, some objects animated or positioned by this two effects contain an unwanted artifact (glitch-like), similar to a border of a selection box around the PNG object. I've double check the rendering process and the source files, but something seems to be happening in the rendering process of this particular effect.

Here are a couple of screenshots:




If I use the "Composite & Transform" "Transition" instead of the effect, the artifact do not seems to appear in the video, but the overall animation quality perception that I have, it's not as fluent as when I animate the objects with the "P&Z" effect.

Is there something I can do to fix this? Or is this a bug to report?

Thanks.

Is your bug related to any of these:

https://bugs.kde.org/show_bug.cgi?id=375520

https://bugs.kde.org/show_bug.cgi?id=376227

Comment there otherwise open a new report so more people look into it.