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How to make luma keyed subtitles more readable?
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JW  
#1 Posted : Thursday, January 19, 2023 9:31:14 AM(UTC)
JW

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During our church service live streams, I project the (white) lyrics over the camera image using luma key.
To make it clear, I also need to darken the camera image a bit.
Is there a way to add a black border around the white text (like professional subtitles) so that it is more legible and the image doesn't have to be made darker?

The source of the lyrics is a NDI desktop capture from a second PC with a powerpoint presentation.
It is pointless to do this in PowerPoint because of the black background of the presentations.
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Peter1000  
#2 Posted : Friday, January 20, 2023 4:29:21 AM(UTC)
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You can easy use powerpoint with a transparent background, using the free PPT NDI Tool from ted ykhwong, to find on GITHUB.
PPT NDI Tool
You add, for example, a 50% black Background on your PP.
The Tool sends the Signal via NDI to vMix, with the transparent background.

ppt1.PNG (42kb) downloaded 0 time(s).
ppt3.PNG (53kb) downloaded 0 time(s).
ppt2.PNG (1,248kb) downloaded 0 time(s).
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JW  
#3 Posted : Friday, January 20, 2023 6:12:30 AM(UTC)
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Thanks, thats a handy tool.

The keying is a bit better than in vMix, but I can't create black outlines with it.

I can't modify the presenations itself in Powerpoint because they are 3th party.
So I have to work with what I am provided with through NDI.
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JW  
#4 Posted : Monday, June 10, 2024 3:01:42 AM(UTC)
JW

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I still can't properly use Luma Key.
The white letters are very faint.
Colour Key is set to black and the Luma Key slider is set to around 80%, thats the best I can do.
The PP presentation is black with white letters, no colors.

Anyone have any tips?
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