Some time ago, I made a VERY complete video (see below) on everything green screen. The idea was to keep it simple, NOT have to go to After Effects, and make pulling a key a 1-click process.
Well, I forgot to include a very simple and cost effective method of making sure the green screen is smooth - tensioners.
I call them "tensioners" because that is exactly what they do, and, I didn't want to use the manufacturer's title which is, "Video Studio 8PC Backdrop Background Multi-functional Holder."
These handy little things are the best and easiest solution I know to keep your green screen wrinkle-free. Trust me, I've seen it all - duct tape, paper clips, bricks, you name it.
They are really cheap at about $8 - $9 dollars for eight (8) of them on Amazon. Click here to check them out.
Sure, like a bag of clothes pins, you may get one that is broken, so buy two bags - they're cheap, and it's always a good idea to have extras on-hand in case you need them.
Here is the 23 minute green screen video mentioned above, which should have been titled, "Everything you ever wanted to know about green screens and how to make them work, except for tensioners." :)
The Basic Filmmaker