SUMMARY Transparent PNG not working with wipes. It did work until version 20.12.1b STEPS TO REPRODUCE 1. Import a PNG picture in top timeline 2. Import any movie, picture or color clip in the timelime below 3. Attach a wipe (i.e. dissolve) to the PNG 4. Check in preview monitor; the PNG fades in as expected 5. Render to MP4: The rendered file fades to white OBSERVED RESULT The rendered MP4-file fades to white; it seems that the alpha channel has not been used. EXPECTED RESULT Fade in of the PNG on top of the movie clip in the timeline below. SOFTWARE/OS VERSIONS Windows: - macOS: - Linux/KDE Plasma: Ubuntu 20.04 with Gnome (available in About System) KDE Plasma Version: KDE Frameworks Version: 5.76.0 Qt Version: 5.14.2 ADDITIONAL INFORMATION In earlier KDEnlive versions (until and including 20.12.1b) wipes with transparent PNG worked fine.
This bug happens in my Kdenlive installation too.
Thanks for your report! This is hopefully fixed in new versions. Please download the latest release and try again. Please close this report if it is fixed or update the version of this report and set back the status to CONFIRMED
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
Thanks for asking back. It seems the bug is solved since several versions. I can confirm that version 22.04.3 works as expected. Great!