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Gradient Mask Tutorial
(applies only to Adobe Premiere)
 
   

1. Using the Gradients with the Image Mask Transition


Premiere already contains a transition called Image Mask. You can use it in connection with the gradients from this web site to mask a part of a video clip.



1. Drag the Image Mask transition from the Transitions window into the T track (Premiere 5: Transition track) between two clips.

2. On the Image Mask Settings dialog press the Select Image button.


3. After selecting a gradient in the file dialog, it will appear in the preview box on the left.

4. Finally you have to press OK.



As you can see from the screen shot above, the second clip is visible at the parts of the first clip that are masked out. To reverse the mask, just press the arrow button on the transition box.

It is recommended to create a virtual clip of this arrangement, if you want to apply further transitions to this clip arrangement.

 

2. Using the Gradients as a Image or Difference Matte


You can also use the gradients more cleverly and effectively by using the Transparency dialog that is available for all S tracks.



1. Drag a clip onto track S1 (Premiere 5: Video 2 track).

2. Click on this clip to activate it and press <Ctl + T> (Premiere 5: press <Ctl + G>) to invoke the Transparency dialog.




3.
Select from the Key type combo box Image Matte or Difference Matte.

4. Click on the Choose button at the top left to select a gradient in the file dialog. You can see the effect of the gradient in the top right Sample frame.

5. While the Image Matte has no slider, the Difference Matte has a Similarity slider that let's you adjust the effect. The Image Matte gradually blends the two video clips according to the gradient. The Difference Matte on the contrary works similar to the Image Mask Transition and additionally let's you expand or contract the mask with the Similarity slider.
As you can see there are four options on the right. The Reverse Key let's you invert the mask effect, Drop Shadow creates a shadow effect and Mask Only ignores the underlying clip. The Smoothing combo box is for activating the smoothing of the mask edges.

6. After you have chosen your settings, press the OK button.
 


Still got questions ?