Color Selection to Video Output - [question]

mottafx's picture

hello everyone

I'm trying unsuccessfully to create a composition that has a video output in black and white + one color I choose. An example would be that all green objects in the scene appear green and the other black and white

for what little I understand. I would create a flow P / B and one where only certain color was visible and the remainder is alpha, similar to a cromakey. then join the two streams on the billboard. (Can not do this blending) the only way I know to do is mix with blendings modes

or another form where I make a color selection ..

I'm trying, if someone help, I will be grateful.

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boya's picture
Re: Color Selection to Video Output - [question]

Probably several ways of doing this, but this is a comp made with a javascript found at

Read details there if you are passing a video into it.

Chroma key +BW.qtz42.17 KB

mottafx's picture
Re: Color Selection to Video Output - [question]

Tks, boya !

I followed their tips. and everything worked.

Used, "color blend mode" to blend "monochrome stream" and "chroma Keyer stream".