https://bugs.kde.org/show_bug.cgi?id=424944
Bug ID: 424944 Summary: Multiple Effects produce unexpected clipping Product: kdenlive Version: 20.04.1 Platform: Other OS: Linux Status: REPORTED Severity: normal Priority: NOR Component: Effects & Transitions Assignee: vpi...@kde.org Reporter: cgir...@free.fr Target Milestone: --- Created attachment 130594 --> https://bugs.kde.org/attachment.cgi?id=130594&action=edit Project and PDF to describe kdenlive_multiple_effects_and_losed_regions SUMMARY When 1st effect moves out of video a part of picture that is moved in again by second effect, moved out part is lost. STEPS TO REPRODUCE 1. New project, create a white color clip, and move it to timeline. 2. Add 1st Effect "Position and Zoom", and set X to half image (ex 960 for full HD video) 3. Add 2nd Effect "Rotate" and set Rotate X to -300 OBSERVED RESULT In Project Monitor, all video corner are black. EXPECTED RESULT In Project Monitor, upper right video corner should be white. WORK AROUND THAT FAILED Switching effects order in stack would produce an other result, but an other region is lost (upper left corner of white square, in the center of the video). SOFTWARE/OS VERSIONS Linux Ubuntu Studio 20.04 64 bits + kdenlive stable ppa up-to-date. Kdenlive Version 20.04.1 KDE Frameworks 5.68.0 Qt 5.12.8 (construit sur 5.12.8) Le système de fenêtres xcb ADDITIONAL INFORMATION . When multiple transformation effects are stacked, a virtual larger video size should be used temporary between effects to avoid losing regions. . Automatic computing of virtual video size may be quite difficult. 4 pixel values could be user defined in stack effect to extend right, lift, upper and bottom normal video. . Changing those values should not require to modify any effects settings to get the same result (unless regions that should no more being lost). . Alternative solution: one mega keyframable effect that combines all transformation effects at once to limit virtual extended video size handling to this single effect (at least: Crop, Scale and Tilt; Rotoscoping; Position and Zoom; Rotate and Shear; Corners). -- You are receiving this mail because: You are watching all bug changes.