To resize a rectangle mask in Premiere Pro, select the rectangle in your Effect Controls panel, then use the selection tool. Press and hold the Shift key while clicking and dragging the rectangle's handles (the small squares at the corners and sides). This will allow you to scale the rectangle proportionally, maintaining its aspect ratio.
Here's a more detailed breakdown:
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Select the Clip: In your timeline, select the video clip that contains the rectangle mask.
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Access Effect Controls: Go to the "Effect Controls" panel. If you don't see it, go to "Window" > "Effect Controls".
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Find the Mask: In the Effect Controls panel, locate the "Mask" section under the effect where you created the rectangle (e.g., Opacity, Color Correction, etc.).
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Select the Mask: Click on the name of the mask (e.g., "Mask 1"). This will make the handles of the rectangle visible in the Program Monitor.
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Resize Proportionally:
- Select the Selection Tool (V) in the Tools panel.
- Click and drag one of the mask's handles.
- Hold down the Shift key while dragging to maintain the rectangle's aspect ratio (proportional resizing). Without holding shift, you can resize it non-proportionally.
Rounding Corners:
If you want to round the corners of the rectangle, adjust the "Mask Expansion" setting in the Effect Controls panel, as mentioned briefly in the reference. A positive value will expand the mask and round the corners; a negative value will shrink it. "Mask Feather" will feather the edges of the mask.
By following these steps, you can easily resize and adjust your rectangle mask in Premiere Pro to achieve the desired look.
