Blue/Green Background

[Rockas]

Ok... this is going to be hard to explain.
My english ain't good enough :)
Does anyone knows a plugin that can make the same effect has we can see on the TV on the "weather" shows?

I know that they have a green/blue backgroung and the guy/girl in the the front of it... on our TVs we get the maps in the place of that blue/green background, right?

Does something like that exists for avisynth? of course it doesn't to be needed in realtime, but... can I something like that?

Thanks in advance.

[smok3]

i couldnt make it work, but you may get some clues:
http://forum.doom9.org/showthread.php?t=106380

[jmac698]

The effect you describe is called chroma keying. You may find it easier wth a tool made for this job.
http://www.videohelp.com/tools?tool=Wax_2

This should be much easier than trying to do it in a script.

[Rockas]

thanks... I'll check out your suggestions :)

[Wilbert]

i couldnt make it work, but you may get some clues:
http://forum.doom9.org/showthread.php?t=106380
Why not? Could you upload both avis somewhere, so we can try?

[smok3]

wilbert:
mostly since i was on deadline..., so the time for experimentation leaked out... :\, no i cant upload those avis, but they are not any different than any greenkey material i guess.. (only that in my case the front was DV material, 25p)

[Rockas]

Well... I an't supply any sample... I asked the question having in mind a future project... I don't know when I'll have to use it, though.

[Wilbert]

@Rochas,

The documentation of Overlay contains an example how to do this.

[Rockas]

yes... I saw it... as soon as I have time I'll try to make it work...
I'll simulate the situation and as soon as I make it work I'll post the script and the clips for everyone.