Switching webcam player video format black square problem

switching webcam player video format black square problem:
After the webcam player is stopped and the format changed and player is started using a new format there is a black square that appears over the screen area that partially covers up the webcam session.
Why is this happening?

Just incase anyone else runs into this problem, I was able to solve it by calling setVisible(false) on the current visual component.

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