Created attachment 160780 [details] minimal reproducing example with a video, a color clip, an image and a title. Only the title crashes the rendering STEPS TO REPRODUCE 1. Open a file 2. put a title in the timeline 3. render the timeline preview. OBSERVED RESULT Whatever the selected profile is, the render stops immediately, with a message I could not click on in the project on which I encountered the bug. I managed to make a minimal reproducing file on which I had a clickable “show details” giving me : ``` [h264_vaapi @ 0x7f1588201f80] Driver does not support some wanted packed headers (wanted 0xd, found 0).[h264_vaapi @ 0x7f1588201f80] Driver does not support packed sequence headers, but a global header is requested.[h264_vaapi @ 0x7f1588201f80] No global header will be written: this may result in a stream which is not usable for some purposes (e.g. not muxable to some containers).[h264_vaapi @ 0x7f1578001f40] Driver does not support some wanted packed headers (wanted 0xd, found 0).[h264_vaapi @ 0x7f1578001f40] Driver does not support packed sequence headers, but a global header is requested.[h264_vaapi @ 0x7f1578001f40] No global header will be written: this may result in a stream which is not usable for some purposes (e.g. not muxable to some containers).[h264_vaapi @ 0x7f1570001f40] Driver does not support some wanted packed headers (wanted 0xd, found 0).[h264_vaapi @ 0x7f1570001f40] Driver does not support packed sequence headers, but a global header is requested.[h264_vaapi @ 0x7f1570001f40] No global header will be written: this may result in a stream which is not usable for some purposes (e.g. not muxable to some containers).[h264_vaapi @ 0x7f1568001f40] Driver does not support some wanted packed headers (wanted 0xd, found 0).[h264_vaapi @ 0x7f1568001f40] Driver does not support packed sequence headers, but a global header is requested.[h264_vaapi @ 0x7f1568001f40] No global header will be written: this may result in a stream which is not usable for some purposes (e.g. not muxable to some containers).[h264_vaapi @ 0x7f1574026d40] Driver does not support some wanted packed headers (wanted 0xd, found 0).[h264_vaapi @ 0x7f1574026d40] Driver does not support packed sequence headers, but a global header is requested.[h264_vaapi @ 0x7f1574026d40] No global header will be written: this may result in a stream which is not usable for some purposes (e.g. not muxable to some containers). ``` EXPECTED RESULT No crash and full render of the preview, previewing is truly necessary once effects start to pile up, especially for those with less powerful computers. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Fedora 36 KDE Plasma 5.27.4 KDE Frameworks Version 5.108.0 Qt Version 5.15.10 MLT Version 7.15.0 ADDITIONAL INFORMATION CPU: AMD Ryzen 7 4700U with Radeon Graphics (8) @ 2.000GHz GPU: AMD ATI 05:00.0 Renoir Memory: 16Gigs
Thanks for your report. This was fixed in git with this commit: https://invent.kde.org/multimedia/kdenlive/-/commit/3c93355a75dedc18700fd84003f7f54e44152c91
Okay, just updated the latest flatpak version (refresh). **The bug does not seem to be gone**, but my effects (`Missing effect: mask_start-frei0r.alphaspot will be removed from project`) have been removed when opening with the new version.
I can confirm the issue (24.08.1 Windows), loading attached project with placeholder and start preview. I got the warning “Preview rendering failed, check your parameters”. The details show: [producer_xml] failed to load producer "/home/chepycou/Videos/OBS/2022-11-26 15-52-21.mkv" [producer_xml] failed to load producer "/home/chepycou/Videos/OBS/2022-11-26 15-52-21.mkv" [producer_xml] failed to load producer "/home/chepycou/Pictures/wallpapers/Xero-Plasma8.jpg"
@rlacroix Do you have used the official OBS flatpak from flathub https://flathub.org/apps/com.obsproject.Studio ? If not please install OBS from flathub and try again. It could be that you have installed the flatpak from Fedora which might have issues generate correct MKV files.
(In reply to emohr from comment #4) > @rlacroix Do you have used the official OBS flatpak from flathub > https://flathub.org/apps/com.obsproject.Studio ? If not please install OBS > from flathub and try again. > > It could be that you have installed the flatpak from Fedora which might have > issues generate correct MKV files. The project did not contain any recorded clips, neither from OBS nor anything else it was just a title
I can confirm the issue (24.12.2 Windows), loading attached project with placeholder and start preview. I got the warning “Preview rendering failed, check your parameters”. The details show: [producer_xml] failed to load producer "/home/chepycou/Videos/OBS/2022-11-26 15-52-21.mkv" [producer_xml] failed to load producer "/home/chepycou/Videos/OBS/2022-11-26 15-52-21.mkv" [producer_xml] failed to load producer "/home/chepycou/Pictures/wallpapers/Xero-Plasma8.jpg"