After a few videos, I think that now I manage pretty well chroma key on a green screen.
But in my last video, my subject handles items that are light blue / cyan, and I started to notice that those items shift color and become an unnatural blue, it looks like contrast has been pushed A LOT after applying the chroma key effect, I never noticed that before (probably because this color is quite greenish).
But this is not how I thought chroma key was working. I thought it was just removing the parts of the video that was matching the selected color (+some margin) and not touch the other parts/colors of the video.
And indeed, testing it with several other tools (Adobe After Effects, Lightworks, and the NewBlueFX chroma key plugin), it does exactly what I expect : remove the background and doesn't touch the colors that doesn't match. Only the default chroma key plugin seem to do that.
Is it a bug in the chroma key plugin (that seem to exist at least on version 12 and 13) ? (but it would be surprising as I guess a lot of people would be affected)
Is it a bug with my installation ? (keeping in mind that uninstalling Vegas 12 and installing Vegas 13 didn't fix it)
Is it some parameter or something I forgot somewhere that would affect the chroma key plugin ?
Update : Here is small parts of the video, with different effects applied :
- The raw image
- The best I can do with the NewBlueFX Chroma Key plugin
- The best I can do with the default Vegas Chroma Key plugin (pretty ugly...)
Vegas Settings :
NewBlue Settings :