Bug 487953

Created attachment 170082 [details]
audio file 171116__ondrosik__laugh3.wav

The Granular Scatter Processor effect is broken in function and controls.

I tried testing on Linux Mint (in VirtualBox) Flatpak (Kdenlive Origin) but the effect was not available there.

LMMS has similar issues with this filter. Using it turns off output both during playback and on export, unless Wet/Dry is changed at which point only the original audio is audible.

Steps to reproduce:
1. Start new project
2. Drag 171116__ondrosik__laugh3.wav to audio track 1 ( https://freesound.org/people/ondrosik/sounds/171116/ CC0 also attached to this ticket)
3. In "Effects" search for "Granular Scatter Processor" and drag it to the clip
4. Try default settings or any other settings and play back in Kdenlive
5. Export the project and view it

Observed result:
1. Density, Grain Length, Grain Attack values cannot change from "0", no matter where the bar is pulled or typed directly into the number field
2. You can hear no output, unless Wet/Dry is moved towards the left, at which point you can hear the original audio only

Expected result:
1. You can change all values
2. You can hear scattered audio when playing back in Kdenlive or the exported file

I tried testing on Linux Mint (in VirtualBox) Flatpak (Kdenlive Origin) but the effect was not available there.

LMMS has similar issues with this filter. Using it turns off output both during playback and on export, unless Wet/Dry is changed at which point only the original audio is audible.

Possible action:
1. Fix the effect or
2. Remove the effect or
3. Inform users of the effect being broken in the UI or
4. Do nothing and consider it enough this ticket exists for people being able to searchenginefind it

SOFTWARE/OS VERSIONS
Kdenlive 8308 nightly Windows 10 kdenlive-master-8308-windows-gcc-x86_64.7z
KDE Frameworks Version 6.2.0
Qt Version 6.7.1 (built against 6.7.1)