I was on a job last week where we were tasked with setting up a green-screen configuration to capture multiple “Video Data Sheet” – incidentally, a great way to generate lots of video assets at a low per-unit cost.
What I want you to see is how much space is required for the set up, and how much gear is involved – be sure to allow plenty of time for setup and take-down (this needed three hours to set up, two to “strike” and load out).

Shooting in green-screen is not hugely complex or difficult, but it does have to be done precisely right – if not, plan on hour after hour of extra editing trying to fix a poor quality chroma key (the “key” is the critical zone where the speaker is composited onto the background). And, in the end, likely failing anyway.
But done carefully, the result can be an almost seamless composite of speaker and background. Here’s a sample of the final product where the “key” is so clean and crisp the individual hairs on the top of the speaker’s head stand out:
