Green Screening Process

Hey everyone,

I am looking for vidders who have worked with/in the green screening process and that would be willing to chat with me/give a basic tutorial/give me tips, etc. about such.

The types of thing that I really need to know are what do I need to green screen, both during footage filming and for the editing process? What software would you recommend? Tips for what works and what doesn't that I might not otherwise consider and anything else that you think I should know about the process from start to finish.

If you've work on or with green screening before and are willing to help me out as I seek to learn how to do this please let me know!

Thanks in advance!

[identity profile] deslea.livejournal.com 2008-10-14 09:39 pm (UTC)(link)
I haven't filmed greenscreen, but I have used partly-greened still panels for title overlays etc in Adobe Premiere. It's pretty easy - there's a preset for it.

Just a guess, but I think with filming greenscreen you would have to have very stable lighting. Otherwise the shades of green might change and some might get past the filter. (Only a guess). And of course your desired footage needs to not have green. Could be problematic for closeups of a person with green eyes...

[identity profile] jmtorres.livejournal.com 2008-10-14 10:56 pm (UTC)(link)
I think with filming greenscreen you would have to have very stable lighting.

Indeed yes. You have separate lights for the green screen and for the subject, and you generally put a greenfilter on the instrument lighting the greenscreen, and that instrument is usually some kind of large, soft, diffuse 2K, with barndoors/black flags keeping that light from spilling or reflecting on the subject. And the subject is several meters away from the green screen to minimize any green reflections too.

[identity profile] jackiekjono.livejournal.com 2008-10-14 09:55 pm (UTC)(link)
What sort of software do you have? If you have fairly sophisticated software, you may be able to create trackmattes without an actual "green screen."

Will the thing in front of the green screen be relatively stable? Or will it be zipping around the screen?

[identity profile] mranderson71.livejournal.com 2008-10-15 04:23 am (UTC)(link)
Some important things to remember during the filming of a green screen scene are:

* Have a nice flat green background, and eliminate any shadows by making sure it is well lit. If you have any darker/lighter areas you will have to work harder in post to eliminate them.

* Make sure your talent isn't wearing the same colour as your chromakey background - if your background is blue, then don't allow them to wear any blue. Otherwise you are going to get ifloating arms, torsos or heads.

* If there is rapid/quick movement in your scenes, turn on a little bit of shutter on your camera settings if possible - this gives the edges of your talent a sharper (less blurry) edge & makes for a cleaner chroma key.