Stock video for green screen use

Are there any perspective guidelines to shoot videos for subsequent use on blue or green screens as backgorund?

Are you asking what type of background would go with a green screen shot like what I did here or something else?

https://www.pond5.com/de/stock-footage/598255

https://www.pond5.com/de/stock-footage/540048

If you do shoot on blue or green screen, you might as well key it and finish it as well. Hence, deliver a finished 32 bit clip with transparency (keyed area) - you can output finished clips using the quicktime and png codec at full 32 bits (with alpha matte) - this saves the customer time as all they need to do is lay the clip on the timeline as a pre-matted clip. Just keep in mind that since this clip is 32 bit depth, it will be a larger file in the end. But clients like this as it saves them lots of work as well as it tells you whether it will key well too.

As an experiment I have uploaded the same clips pre-keyed and in original greenscreen form and I haven't found a difference in sales. The same clips have sold either way.

I think I did not explain myself properly. I mostly do scenic photos and videos related to the tourist industry, but this material is of no use for producers that use a green screen in a studio environment. I know that they place the green screen about 6-8 feet behind the talents but I do not know at what height is the camera from the floor nor what is the average distance from the camera to the talents. Green screen filming tutorials only talk about lighting but they don't talk about how to film what you what you want to place on the green screen so that sizes and shadow have the right size and perspective. I just wanted to know if there is a rule of thumb or guidelines like for example: that the camera lens horizontal axis should be about 5 feet 8 inches from the floor and talents are usually 12 feet away from the camera with no zoom. From what I have seen the best time to shoot is around 10:00 am and 2:00 pm with the sun behind the top of your head so that shadows are more easily match by the studio lighting technicians. Hope you understand.

I try to keep my actor about 6 feet from the green screen and the lights about 45 degree angle on each side of the actor.
But it's whatever it takes to not get shadows on the green background.

I always shoot at eye level as that is the most interesting for my taste. Unless I'm going for some other look.

I don't think there is an average of anything, it's what works for your shot.

I try to keep the camera in one spot and zoom in if I want more of a portrait or whatever.
If I shoot a full length than I move the camera away to get the shot. Also, I try to not use less than 50mm.

Hope this is what you were asking.
Jake

Something else that is usful to know about what people are looking for is... the lighting! when compositing stuff from green screens they try to match the lighting to the background. so it is helpful to know what type of scene they are going for in order to pick the background, and lighting etc....but you probably already knew that!