Holdout Matte; Layer Matte - Blackmagic Design Ultimatte 12 Manual De Operaciones

TIP You can create an internal mask using the 'window' controls on your Ultimatte.
This can be a great tool for creating a rough, fast garbage matte. For more information
on how to set up window masks, refer to the 'matte input/window' section.

Holdout Matte

This matte is similar to a garbage matte, however, it lets you mask out areas from within the
visible foreground so they are ignored by the matte.
For example, imagine a portion of a virtual set needs to appear green in the foreground.
This will present a challenge because anything green will key out and reveal the background
underneath. A holdout matte can be created to exclude that particular area within the set, which
will prevent it from being keyed.

Layer Matte

The layer matte lets you add more foreground elements to the scene. For example, if you want
to add graphics over the top of the composite.
The layer matte can include transparency elements and you can swap the layer positioning
in the final composite. For example, you may want to change the layer order during your
production so the layer input appears in front of, then behind, the talent. You can even set
a transition rate so the order change is a smooth mix transition.
For more information, refer to the 'Matte input settings/setting the layer order' section.
What is a Matte? 9