Not sure what is happening to iMovie greenscreen. Details inside PLEASE HELP!

[The Valeyard]

I edited two different pieces of chroma key to composite. I had many pieces of video and edited them togeth and exported them to a file then reimported it into an iMovie event. I did the same with the background and combined them together. I did this once before and no trouble. Please tell me what's gone wrong.

Chroma

Backdrop

Composited​

 

[The Valeyard]

I think it might have turned it monochrome, tranparent and negative. How can I revert it?

 

[rcstokes1931]

I have same problem

Did you ever find out what caused the problem with the greenscreen? I have done greenscreens before without problem; now I have the ghost appearance as you do.

 

[rcstokes1931]

Started from scratch and corrected my problem

I did not find out what caused my problem but when I started all over, even loading from the camera, it turned out okay.

I do have another problem. Does anyone know how to fade a greenscreen video. I can fade the background but not the foreground. I want both to fade out at the same time.