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How do you mirror a mask in Premiere Pro?

Published in Masking Effects 3 mins read

Mirroring a mask in Premiere Pro involves creating a reflected version of the existing mask. Although the provided video reference titled "Mirror Reflection Effect: Adobe Premiere Pro" doesn't explicitly detail mirroring a mask, the video discusses creating a mirror effect which utilizes masking. Based on this, we can deduce that while there isn't a dedicated 'mirror mask' tool, you achieve a similar effect using these steps:

How to Create a Mirrored Effect Using Masks in Premiere Pro

You can create a mirrored effect using masks through duplication and manipulation. Here's a breakdown:

  1. Create your original mask:

    • Apply a mask to your video clip using the opacity settings or any effect with masking capabilities.
    • Adjust the shape, position, and feathering of the mask.
  2. Duplicate the masked clip:

    • Hold the Alt (or Option on Mac) key while dragging the clip above it to create a duplicate directly above the original.
  3. Adjust the new mask:

    • In the Effects Control panel, access the mask settings for the duplicated clip.
    • Transform the mask: You can flip or rotate the mask to achieve a mirror effect.
      • Flip Horizontally: Try adjusting the "Scale" values by changing the x-axis scale to -100. This will flip the mask along its vertical center.
      • Rotate: Rotate the mask by 180 degrees.
    • Reposition the duplicated mask to align as needed for the mirror effect.
  4. Refine: Adjust the mask's position, scale, and feathering to precisely align with the intended mirror reflection.

Example Usage

As the video demonstrates, you might want to create a mirror reflection effect as if someone was looking into a mirror at a tap.

  • The original clip shows a person interacting with a tap.
  • The duplicated, masked clip acts as the reflection.
  • By adjusting the position and scale of the duplicated clip's mask the reflected person's actions line up to show someone looking into a mirror.
  • Feathering might be added to make the edges blend better.

Considerations:

  • Perspective: For a realistic mirror effect, consider adjusting the perspective of the reflected mask. You can use transformation options within the mask settings to tweak.
  • Mask type: The type of mask (e.g. rectangular, elliptical, free-draw) affects how you may manipulate to get the mirror effect.
  • Complexity: Depending on the complexity of the scene you may require multiple layers and masks.

Additional Tips

  • Animate Masks: You can animate both the original mask and the 'mirrored' mask to simulate movement within the reflection, such as an object moving or a person looking at something.
  • Multiple Reflections: The same duplication process can be repeated to create multiple mirror reflections if required.

In conclusion, while Premiere Pro does not offer a direct "mirror mask" feature, you can effectively create a mirrored effect through duplication, mask transformation, and adjustments. The key is manipulating the duplicated mask to be a reflection of the original.

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