[John Mendelsohn]

Robin, I seem unable to attach screenshots to these messages. Any chance of your writing to me at johnmendelssohn@gmail.com? I will then, by return email, send the screenshots. Thanks very much for your help.

[John Mendelsohn]

Here are a couple of screen shots. You can see the moon peeking out beneath the window at the top; I want to mask the window so that the moon appears only within it. Also please note that the mask tool is greyed out with the window group selected.

I am very grateful for your suggestions.

[John Mendelsohn]

If it’s any help, RK, I’ve already got the window masked, as I’ve got a video playing behind it. The group contains the window, the moon, and the rectangle-masked video. I kid you not about the grayed-out mask icon.

[John Mendelsohn]

Neither of your kind suggestions works. I am unable to mask the whole group; the mask icon is greyed out when I select the whole group. Nor did masking the moon individually help. You see the problem is that I want the a portion of the moon to appear just above the bottom of the window, and then rise diagonally through the window, and disappear behind its right edge. As it stands, when the moon first appears, the bottom portion (that which I want hidden) is visible beneath the bottom edge of the window.

[John Mendelsohn]

Where, please?

[John Mendelsohn]

Thanks, Simon.

[John Mendelsohn]

Found the Project layer, and adjusted the duration. Many thanks.

[John Mendelsohn]

Many thanks, Mark. Solved the interpolation problem, but I see only my various Groups and their contents in the Layers window. No sign of a project lyaer.

[John Mendelsohn]

Many, many thanks, Jeff. In the word of Homer Simpson, d’oh!

[John Mendelsohn]

Many thanks for your reply, Michael. I did the green-screening right in FCPX. How do I fix it?