I've been having problems with setting transparency on text
effects. I'm trying to create a text effect where the
LETTERS of the text are transparent INSTEAD of the
background color, thus allowing an underlying video clip to
be seen through the letters of the text. I want a black
background, so when I go to "Properties/Media" I
choose "Premultiplied" with the color white (same as text
color) for the alpha channel. However, no matter what
color I choose as the alpha channel, VF by default seems to
set black as the alpha channel. So instead of getting a
black background with transparent letters and a video file
creating the shapes of the letters, I get a full frame
video with white text. What to do?