In KdenLive 15.12.0 , Lumakey effect appears in Effects listing under Misc. Selecting the effect pulls up the slider controls (Threshold, Slope, Pre-Threshold Luma Level, Post-Threshold Luma Level) but the controls have no effect at all. Raised the subject on KDenLive Forum: https://forum.kde.org/viewtopic.php?f=270&t=130518 Reproducible: Always Steps to Reproduce: 1. Apply listed lumakey effect to clip in timeline 2. Effect controls appear 3. Manipulate the controls and observe effect on clip in monitor Actual Results: Manipulating the controls had no effect Expected Results: As per the applied effect control parameters Not sure whether to report this as a bug or feature request. Whether the lumakey effect is listed "by accident" or just not implemented yet, this would be a very useful effect to have working.
Created attachment 96701 [details] Luma key effect The Lumakey effect changes the clip's alpha channel. So the see it's effect, you need a transition (like composite transition that is available in tracks) and another clip beneath. Works in my tests (see attached screenshot)
Ah, OK, gotcha. Thanks for clarifying that.