[vlc-devel] Masking one movie stream with another

[Alex Suter]

Greetings VLC,

Before I go off and implement this on my own, I wanted to ask if it's been
done before.

I want to use a movie file as an image mask on another movie file. I'm looking
to take a movie file, and use it as an alpha mask on, say, a DVD, or some
other movie stream.

Is there anything like that out there already? If not, any advice on
how I should
go about it?

Thanks very much for any pointers.

Sincerely,
Alex Suter