I am currently editing a video of a play in which the cast dropped fake snow which looked great for the audience but, unfortunately, is not visible to the camera. I have added snow using Particle Playground's Cannon exploder which looks great but it should not be falling on the audience's heads ! I have added a mask to the snow layer but is not hiding the snow. I can't understand why not. I've tried leaving the condition at "add" and ticking the "inverted box and leaving the "inverted" box empty and changing the condition to subtract; but the snow is still visible inside the mask. Does anyone know what I'm doing wrong ? I have used masks before without any trouble...help ! btw I am using CS5 on Win 7.
Regards,
TL.
