Created attachment 118519 [details] image clipping kdenlive 19.03.70 mlt 6.13 ffmpeg 4.0.2-2 git repo branch origin/refactoring_timeline 76bca9ab6 STEPS TO REPRODUCE 1. add an image to timeline 2. switch timeline composition to preview 3. apply a transform effect on the clip. OBSERVED RESULT under preview, the image moves slightly downward, results in image clipping. EXPECTED RESULT the image should stay in the same position under preview and high quality composition. This can be reproduced with 18.12.1 as well. There is a slight difference even without the transform effect, but i think that is just the resolution between the two modes. SOFTWARE/OS VERSIONS KDE Frameworks Version: 5.55 Qt Version: 5.11.1
Confirmed. Tested with nighty_build AppImage #100. Your setup: PNG above a clip with transform effect. Switching timeline between “Preview” and “High Quality”. - If the PNG has an alpha channel it jumps. - If the PNG has no alpha channel it stays. Opend issue: https://invent.kde.org/kde/kdenlive/issues/84
PNG with alpha only jumps when the PNG with alpha has not the same size as the project size. As work around: make sure the PNG with alpha has the same size as the project size.
fixed in https://invent.kde.org/kde/kdenlive/commit/43039944cadd07b1b38c5d285259dd23a5646086