Casts a shadow on the ground with green screen images


I have pictures of green screen of a player market with a green screen. After the green screen overlay I want to cast a shadow of the object on the ground. Seems simple enough :-) I have tried everything I can think my green screen images like a layer 3D and then add lights, which appear to be rising shadows/light on the actor, but not cast shadows. Shadow a shadow directly behind the actor but no way to "move" it is on the floor.

If someone could provide guidance, I would be very happy.

Thank you

Bob Barnes


CantonVideoMan wrote:

Hi bogiesan,.

Thanks for the help.

My film is shot with a green ground. The problem I have is that the final product must be an actor walking with a transparent background, but casts a shadow on the ground. So that the shaow displayed any context the customer decides to use the video with.

If I try to apply a drop shadow or a radial shadow the shadow BEHIND the actor not appear below. I must do this 10 times more difficult it must be.

Any advice would be appreciated.

Thanks again,


I'm not enter the question, then, sorry. Just use the shade that you have captured. A chromakeyer to shadow is not difficult.

The problem with faking a shadow is, Yes, it is ten times more difficult than do in the original shooting because of all the problems we have discussed. There is no interaction with the feet with a layer of shadow and 3D projection is realistic enough to be accepted by an audience; It will still look fake. You CAN create a 3D shadow carefully placing a light in a 3D scene and place a copy of your matted character perpendicular to the light source and by setting the layer to cast the shadow only. But this is not always true.


Tags: After Effects

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