Created attachment 179726 [details] During transition 1. Create 2 video clips in V2 and V1 2. Add Transform effects to the V1 clip 3. Overlap the 2 clips so V2 transitions to V1, and add a dissolve transition OBSERVED RESULT In some - but not all - cases, instead of the expected transition, V1 appears immediately, with a small overlay window in the top left corner of the preview panel showing a replica of the V2 clip that gradually fades out through the transition. Note that this appears to only happen when one of the clips has Transform effects and the other does not. EXPECTED RESULT A smooth transition SOFTWARE/OS VERSIONS Kubuntu Linux 24.10 KDE Plasma Version: 6.1.5 KDE Frameworks Version: 6.6.0 Qt Version: 6.6.2 Kdenlive: Flatpak Version 24.12.3 ADDITIONAL INFORMATION The two clips are both 4k video captured on an Android smartphone. The project is set to HD720, 30fps. The computer is an AMD Ryzen 9 5900X with 32GB RAM Graphics: MSI GeForce RTX 3050 LP 6G OC (6GB GDDR6/PCI Express) Drivers for Nvidia
In the transition settings, there is a "Revert" checkbox. It is usually set automatically if the transition needs to go from an upper track to a lower track, but in some cases it might not be detected. Can you try checking this option to see if it fixes your problem ?
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(In reply to Jean-Baptiste Mardelle from comment #1) > In the transition settings, there is a "Revert" checkbox. It is usually set > automatically if the transition needs to go from an upper track to a lower > track, but in some cases it might not be detected. > > Can you try checking this option to see if it fixes your problem ? Hello - Sorry for the delay; I didn't see a notification. I just tried all combinations of Invert, Revert, Composition Track and Wipe Method and none make any difference. However, all transitions apart from Wipe appear to function properly, and Dissolve seems to do the same job as Wipe so I'll use that from now on.
The problem is with transitions from both lower to upper track and vice versa. It seems to correlate with one or other of the tracks being zoomed.