How do you copy a mask in Premiere Pro?

Copying a mask in Premiere Pro is straightforward: you can copy and paste the mask effect from one clip to another.

Here's a step-by-step guide:

1. Select the Clip with the Mask: In your timeline, click on the clip that contains the mask you want to copy.

2. Open the Effect Controls Panel: Go to the "Window" menu and make sure "Effect Controls" is checked. This will open the Effect Controls panel.

3. Select the Mask Effect: In the Effect Controls panel, locate the specific effect that contains the mask you wish to copy (e.g., "Opacity" if it's an opacity mask, or the effect name if you applied the mask within an effect). Click on the name of the effect itself – this selects the entire effect, including the mask.

4. Copy the Effect: Press Ctrl+C (Windows) or Cmd+C (Mac) to copy the effect. Alternatively, right-click on the effect name in the Effect Controls panel and select "Copy".

5. Select the Target Clip: In the timeline, click on the clip where you want to paste the mask.

6. Paste the Effect: Press Ctrl+V (Windows) or Cmd+V (Mac) to paste the effect. Alternatively, right-click anywhere within the Effect Controls panel (while the target clip is selected) and select "Paste".

Now, the target clip should have the same mask as the original clip. You might need to adjust the mask's position or size to fit the new clip, depending on the content.