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View Full Version : LW Keyhole Matte function



joseburgos
06-27-2008, 01:14 PM
Keyhole matte does not work with reflections in a LiveSet and interacts with them in a pass through way.
To demonstrate this, I made a very simple LS with the exact same input plane with and without keyhole matte enabled.
Notice how the video passes through the reflective floor on keyhole as well as just creates a hole for the video to pass through (no scaling occurs when keyhole is enabled).

Not a great LS but wanted to show what keyhole is doing and what can happen if used wrong.
Keyhole is best used on close up shots with input plane full screen.
Not the only use as I have used it show a live clock from the FX bus allowing the camera to do the scaling.

Anyway, hope this helps explain the keyhole matte.