User`s manual

230 Chapter 12

m Click the button with the plus sign next to the corner property you want to adjust and

then click the Canvas or the Video tab of the Viewer.

Cropping a Clip

You can crop a clip to remove unwanted elements from a clip’s image. This is a useful

technique if you want to remove rough, overscan edges on captured clips. Cropping hides

the selected parts of a clip rather than deleting them, so you can always reset the cropped

image to reveal the original image. You can crop a clip by either dragging with the Crop tool

or by specifying how many pixels to crop from the borders. You can also feather the edges of

the frame to make them blend smoothly with the background.

To crop a clip by dragging:

1 In the Viewer or Canvas, turn on a wireframe mode.

2 Select the Crop tool.

3 Drag from the edges of the clip to eliminate the unwanted elements in the image. (Press

Shift while dragging to constrain the aspect ratio, or press Option while dragging to move the

clip symmetrically while cropping.)

To crop a clip in the Viewer’s Motion tab:

1 Double-click a clip in the Timeline or Browser.

2 Click the Motion tab in the Viewer and click the triangle to the left of Crop.

3 Drag a slider or enter a new value to crop the clip from the speciﬁed side.

To feather the edges of a clip:

1 Double-click the clip and click the Motion tab.

2 Click the triangle to the left of Crop.

3 Drag the Feather Edge slider or enter a new value.

Setting a Clip’s Opacity

Clips are completely opaque by default, except for the portions within an alpha channel. You

can reduce the opacity of a clip to less than 100 percent to make it appear semi-transparent,

displaying the image on the layer beneath it.

You can change a clip’s opacity either with controls on the Motion tab or in the Timeline.

To set a clip’s opacity from the Viewer’s Motion tab:

1 Double-click a clip in the Timeline or the Browser.

2 Click the Motion tab in the Viewer and click the triangle to the left of Opacity.

3 Drag the slider or enter a new value in the text box.