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IDProjectCategoryView StatusLast Update
0000658Cinelerra-GG[All Projects] Bugpublic2024-05-30 19:11
ReporterPhyllisSmith Assigned ToPhyllisSmith  
Status closedResolutionfixed 
Product Version 
Target VersionFixed in Version 
Summary0000658: ChromaKey AND ChromaKey (HSV) plugins
DescriptionEDITED because misinterpreted problem and mixed up ChromaKey with ChromaKey(HSV) which are 2 different plugins.
ChromaKay (HSV) plugin just has a single problem. Details can be found in the archived Mailing List -[email protected]/msg07506.html .

Request for ChromaKey improvements.
TagsNo tags attached.




2024-05-30 19:11

manager   ~0005642

Mixed up with 0000657 so closing this one.


2024-05-30 19:06

manager   ~0005641

Mods suggested to change/improve Chromakey (mixed up with BT 0000657).


2024-05-17 09:51

manager   ~0005637

And possibly change the name: Threshold --> Hue range


2024-05-17 07:12

reporter   ~0005636

@Andrea_Paz @ALL
I tested your values for Threshold and Slope in ChromaKey plugin. It seems good to me. I agree with you for the change.
I think would be better to swap the position of the Threshold and Slope items in the GUI: from top to bottom, first Threshold and then Slope, because Threshold is the master, I think.
I would like to have the GUI improvement like for the ChromaKey-HSV plugin, if possible.


2024-05-15 09:00

manager   ~0005630

In chromakey.C we have as default settings (Reset):


void ChromaKeyConfig::reset()

    red = 0.0;
    green = 0.0;
    blue = 0.0;
    threshold = 60.0;
    use_value = 0;
    slope = 100;

I propose the following changes:

threshold = 10.0;
slope = 0;

Above all, the Slope at 0 is important because otherwise we will have too much "transparency" that makes it impossible to recognize the key color.

Finally, the plugin works fine for me. What are the problems that have been encountered?


2024-05-14 20:56

manager   ~0005629

Last edited: 2024-05-14 21:08

View 2 revisions

The ChromaKey HSV plugin works reasonably well, it is only the "Min Saturation" slider that works improperly. Overall, the plugin allows you to extract keys of sufficient quality.
The "Min Saturation" problem has been solved in CinHV: the plugin has been rewritten and improved, bringing it even closer to the original plugin that inspired Jerome, namely Avid's SpectraMatte.

Issue History

Date Modified Username Field Change
2024-05-14 17:05 PhyllisSmith New Issue
2024-05-14 20:56 Andrea_Paz Note Added: 0005629
2024-05-14 21:00 Andrea_Paz Description Updated View Revisions
2024-05-14 21:08 Andrea_Paz Note Edited: 0005629 View Revisions
2024-05-15 09:00 Andrea_Paz Note Added: 0005630
2024-05-17 07:12 IgorBeg Note Added: 0005636
2024-05-17 09:51 Andrea_Paz Note Added: 0005637
2024-05-30 18:57 PhyllisSmith Summary ChromaKey plugin not working - use F_chromakey instead => ChromaKey (HSV) plugin requested mods
2024-05-30 18:57 PhyllisSmith Description Updated View Revisions
2024-05-30 19:06 PhyllisSmith Assigned To => PhyllisSmith
2024-05-30 19:06 PhyllisSmith Status new => acknowledged
2024-05-30 19:06 PhyllisSmith Note Added: 0005641
2024-05-30 19:09 PhyllisSmith Summary ChromaKey (HSV) plugin requested mods => ChromaKey AND ChromaKey (HSV) plugins
2024-05-30 19:09 PhyllisSmith Description Updated View Revisions
2024-05-30 19:11 PhyllisSmith Status acknowledged => closed
2024-05-30 19:11 PhyllisSmith Resolution open => fixed
2024-05-30 19:11 PhyllisSmith Note Added: 0005642