SUMMARY 19.12.0 and 19.12.1 cannot play video (any format) well enough to edit. 18.12.3 works fine on same machine STEPS TO REPRODUCE 1. upgrade kdenlive to 19.12 2. create new project and pull in a clip - .mov,.mts,... makes no difference 3. play 4. observe unusable performace 5. downgrade just kdenlive to 18.12 6. observe reasonable performance OBSERVED RESULT video and audio play are extremely erratic, play head stalls for seconds and everything quickly out of sync. EXPECTED RESULT obviously smooth play with play-head and audio tracking correctly NOTE: another machine running same OS version, will similar CPU but better GPU works ok with 19.12 details below SOFTWARE/OS VERSIONS FreeBSD: 11.3-RELEASE-p3 (available in About System) KDE Plasma Version: KDE Frameworks Version: Qt Version: Sorry, the above does not map well to FreeBSD packages. mlt version is 6.18.0_1 Note: only the kdenlive version differs, after 19.12 proved unusable, I downgraded just the kdenlive package to 18.12 - all others remain at the versions suitable for 19.12 ADDITIONAL INFORMATION The machine with problem has decent cpu: i9-7900X CPU @ 3.30GHz (10 core) Modest GPU: NVIDIA GPU GeForce GTX 1050 Ti The machine where 19.12 works - cpu: Xeon(R) CPU E5-2637 v3 @ 3.50GHz GPU: NVIDIA GPU Quadro K4200 both machines have 32G ram and all OS and support packages at same versions
Ok based on the shared libs and the packages they come from (list below if useful) I'm guessing KDE version 5.65.0 Qt version: 5.13.2 Packages: brotli-1.0.7_2,1 dbus-1.12.16 freetype2-2.10.1 gettext-runtime-0.20.1 glib-2.56.3_6,1 graphite2-1.3.13_1 gstreamer1-1.14.4 gstreamer1-plugins-1.14.4_2 harfbuzz-2.6.4 hyphen-2.8.8 icu-65.1,1 jpeg-turbo-2.0.3 kf5-attica-5.65.0 kf5-karchive-5.65.0 kf5-kauth-5.65.0 kf5-kbookmarks-5.65.0 kf5-kcodecs-5.65.0 kf5-kcompletion-5.65.0 kf5-kconfig-5.65.0 kf5-kconfigwidgets-5.65.0 kf5-kcoreaddons-5.65.0 kf5-kcrash-5.65.0 kf5-kdbusaddons-5.65.0 kf5-kdeclarative-5.65.0 kf5-kfilemetadata-5.65.0 kf5-kglobalaccel-5.65.0 kf5-kguiaddons-5.65.0 kf5-ki18n-5.65.0 kf5-kiconthemes-5.65.0 kf5-kio-5.65.0 kf5-kitemviews-5.65.0 kf5-kjobwidgets-5.65.0 kf5-knewstuff-5.65.0 kf5-knotifications-5.65.0 kf5-knotifyconfig-5.65.0 kf5-kpackage-5.65.0 kf5-kservice-5.65.0 kf5-ktextwidgets-5.65.0 kf5-kwidgetsaddons-5.65.0 kf5-kwindowsystem-5.65.0 kf5-kxmlgui-5.65.0 kf5-purpose-5.65.0 kf5-solid-5.65.0 kf5-sonnet-5.65.0 libICE-1.0.10,1 libSM-1.2.3,1 libX11-1.6.9,1 libXau-1.0.9 libXcomposite-0.4.5,1 libXdmcp-1.1.3 libXext-1.3.4,1 libXfixes-5.0.3_2 libXi-1.7.10,1 libXrender-0.9.10_2 libXtst-1.2.3_2 libcanberra-0.30_5 libdbusmenu-qt5-0.9.3.160420160218_10 libffi-3.2.1_3 libiconv-1.14_11 libinotify-20180201_1 libltdl-2.4.6 libogg-1.3.4,4 libunwind-20170615 libv4l-1.6.3_4 libvorbis-1.3.6,3 libxcb-1.13.1 libxml2-2.9.10 libxslt-1.1.34 mlt-6.18.0_1 nvidia-driver-440.31 orc-0.4.28 pcre-8.43_2 pcre2-10.33 phonon-qt5-4.11.1 png-1.6.37 qt5-concurrent-5.13.2 qt5-core-5.13.2 qt5-dbus-5.13.2 qt5-declarative-5.13.2 qt5-gui-5.13.2_2 qt5-location-5.13.2 qt5-multimedia-5.13.2_1 qt5-network-5.13.2 qt5-printsupport-5.13.2 qt5-sensors-5.13.2 qt5-speech-5.13.2 qt5-svg-5.13.2 qt5-webchannel-5.13.2 qt5-webkit-5.212.0.a3_5 qt5-widgets-5.13.2 qt5-x11extras-5.13.2 qt5-xml-5.13.2 rttr-0.9.6.16_1 sqlite3-3.30.1 taglib-1.11.1_3 webp-1.0.3_1 woff2-1.0.2_4 xcb-util-keysyms-0.4.0_1
Please try with the current Kdenlive AppImage version 19.12.2c to see if there are any packaging issues https://files.kde.org/kdenlive/release/ Start the project with the correct project settings. Ones you have a clip in the timeline you can lower the project settings i.e. 720p to have a smoother playback. Upcoming 20.04 will have this scaling implemented. You can test with the daily build. Monitor -> preview resolution.
FWIW I updated to kdenlive-20.04.2 recently and found it unusable also, not quite as bad as 19.12 though. I had to downgrade again to 18.12.3 As I mentioned, another machine with same s/w as this one worked fine with 19.12, the biggest difference being the GPU NVIDIA GPU Quadro K4200 (GK104GL) in the machine that works ok NVIDIA GPU GeForce GTX 1050 Ti (GP107-A) in the machine that struggles. Wondering if I need to upgrade GPU ?
Do you use the appimage? If not (and FreeBDS supports it ???) can you please try whether this is happening with the appimage too (Download the latest version here https://kdenlive.org/en/download/)?
(In reply to Julius Künzel from comment #4) > Do you use the appimage? If not (and FreeBDS supports it ???) can you please > try whether this is happening with the appimage too (Download the latest > version here https://kdenlive.org/en/download/)? I don't sorry, but after recent upgrade to FreeBSD 12.1 kdenlive 20.12 seems to be working ok.