Created attachment 184896 [details] The bug. Note the effect parameters and the complete lack of it on the screen. Debug info below. Kdenlive: 25.08.0 Package Type: Unknown/Default MLT: 7.32.0 Qt: 6.9.2 (built against 6.9.1 x86_64-little_endian-lp64) Frameworks: 6.17.0 System: Arch Linux Kernel: linux 6.16.4-zen1-1-zen CPU: x86_64 Windowing System: xcb GPU: AMD/AMD Radeon Graphics (radeonsi, renoir, ACO, DRM 3.64, 6.16.4-zen1-1-zen) Movit (GPU): disabled Track Compositing: qtblend Basically for whatever reason "Video Noise Generator" effect does not work anymore. No matter what I do, the noise either does not appear at all or if paired with other effects the video goes pitch black. STEPS TO REPRODUCE 1. 2. 3. OBSERVED RESULT EXPECTED RESULT SOFTWARE/OS VERSIONS Windows: macOS: (available in the Info Center app, or by running `kinfo` in a terminal window) Linux/KDE Plasma: KDE Plasma Version: KDE Frameworks Version: Qt Version: ADDITIONAL INFORMATION
Yes, it doesn't work as of 25.08.3. It is a very useful tool to mask compression artifacts.
My system info: Kdenlive: 25.08.3 MLT: 7.33.0 FFmpeg KDE Frameworks: 6.19.0 Qt: Using 6.9.2 and built against 6.9.2 AppImage Debian GNU/Linux 12 (bookworm) (Xcb) Build ABI: x86_64-little_endian-lp64 Kernel: linux 6.12.43+deb12-rt-amd64
Looks like the effect/filter cannot work with keyframes. Fix is underway.
Created attachment 186734 [details] Video Noise Generator XML file Updated XML file without keyframe support. Needs to be added to the effects folder.
Thank you so much, it works! As a note for the others, the attached avfilter_noise.xml.xml should be put to: for Flatpak: $HOME/.var/app/org.kde.kdenlive/data/kdenlive/effects for AppImage: $HOME/.local/share/kdenlive/effects
One observation: it seems that the "Flag all" selection always overrides the separate component selections. There should be an "Off" position for "Flag all", otherwise it makes the separate selector boxes useless.
Created attachment 186752 [details] Video Noise Generator XML file new version Some visual enhancements ;-)
Created attachment 186753 [details] Video Noise Generator XML file update Fixed a few typos :-/
Git commit f47b79b6a9cd63d6892291dbb9c1bfcdead4dd51 by Jean-Baptiste Mardelle. Committed on 20/11/2025 at 09:23. Pushed by mardelle into branch 'release/25.12'. Fix noise generator does not support keyframes M +5 -5 data/effects/avfilter/avfilter_noise.xml https://invent.kde.org/multimedia/kdenlive/-/commit/f47b79b6a9cd63d6892291dbb9c1bfcdead4dd51