Flipping green screen footage causes error with background

Question

Hi,
I have created a short 30 second video using a green screen. I realised after that I needed to flip it (I was point the wrong way!) So I dragged it into my project and then flipped it. THen when I dragged the background picture in and choose "green screen" the image is all weird. I try to change the efects, colour etc but it doesn't seem to work.
If I drag the back ground image in first and then the green screen video they merge OK but I cannot flip the green screen video once it is in project with the background image already there.
Any one have this problem and know how to fix it - or do I have to reshoot the video and point the other way!?
Thanks
Cheers
Tracy

Answer 1

CantonVideoMan wrote:
Hi bogiesan,
Thanks for the help.
My footage is actually shot with a green floor. The problem I'm having is the final product needs to be an actor walking out with a transparent background, but casting a shadow on the floor. So that the shaow will show up no matter what background the customer decides to use the video with.
If I try applying a drop shadow or a Radial Shadow the shadow shows up BEHIND the actor not below. I must be making this 10 times harder than it needs to be.
Any Advise would be appreciated.
Thanks again,
Bob
I'm not grasping the issue, then, sorry. Just use the shadow you have captured. Setting a chromakeyer to pass the shadow is not difficult.
The problem with faking a shadow is, yes, it's ten times more difficult than getting it in the original shoot because of all the problems we've discussed. with a shadow layer there is not interaction with the feet and the 3D projection is not realistic enough to be accepted by an audience; it will always look fake. You CAN create a projected 3D shadow by carefully placing a light in a 3D scene and placing a copy of your matted character perpendicular to the light source and setting the layer to project the shadow only. But it still is not real.
bogiesan