Specifications

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The asset matte movie is required only when an asset movie that does not include an
alpha channel is used by the transition. Having a separate asset matte movie is
particularly useful when the asset movie is normal video (as opposed to an animation).
The asset matte movie must have the same name as the asset folder, followed by
“-matte,” and can have an extension. For example, if the asset folder’s name is Spinning
DVD, the asset matte movie could be named Spinning DVD-matte.mov.
The asset matte movie needs to be monochrome, with white identifying the asset
movie video to use, and black identifying the places where the start or end frame video
appears. You can also use levels in between white and black to set transparency and
add soft edges.
Background Matte Movie
The background matte movie can be used in two ways:
 It can be used in conjunction with the asset movie to control which areas of the screen
should show the start frame video and which should show the end frame video.
 It can be used as the only movie in the transition assets folder to provide a wipe
transition. As when used with the asset movie, the background matte movie controls
which areas of the screen should show the start frame video and which should show
the end frame video.
The background matte movie must have the same name as the transition asset folder,
followed by “-backgroundMatte,” and can have an extension. For example, if the
transition asset folder’s name is Spinning DVD, the background matte movie could be
named Spinning DVD-backgroundMatte.mov.
The background matte movie needs to be monochrome, with white identifying where
the start frame video appears, and black identifying where the end frame video
appears. As a general rule, the background matte movie should start with a full white
screen and end with a full black screen. You can also use levels in between white and
black to set transparency and add soft edges.
The white areas define
where the start frame
background video
appears.
The black areas define
where the end frame
background video
appears.