USING ADOBE PREMIERE PRO

399

Effects and transitions

•Composite In Front Uses the echoes’ alpha channels to composite them front to back.

•Blend Averages the echoes.

Posterize Time effect

The Posterize Time effect locks a clip to a specific frame rate. Posterize Time is useful on its own as a special effect, but it also has more subtle uses. For example, 60-field video footage can be locked to 24 fps (and then field rendered at 60 fields per second) to give a filmlike look. This effect is sometimes called Strobe in hardware devices.

Animating the value of the Frame Rate slider can give unpredictable results. For this reason, the only interpolation method allowed for the frame rate is Hold.

Transform effects

Camera View effect (Windows only)

The Camera View effect distorts a clip by simulating a camera viewing the clip from different angles. By controlling the location of the camera, you distort the shape of the clip.

Latitude Moves the camera vertically. The effect makes the clip appear to be flipping vertically.

Longitude Moves the camera horizontally. The effect makes the clip appear to be flipping horizontally.

Roll Rolls the camera, thus appearing to rotate the clip.

Focal length Changes the focal length of the camera lens. Shorter lengths provide wider views, whereas longer focal lengths provide narrower but closer views.

Distance Sets the distance between the camera and the center of the clip.

Zoom Enlarges or reduces the view of the clip.

Fill Color Specifies the background color.

Fill Alpha Channel Makes the background transparent (useful if the clip with the effect is superimposed). In the Effect Controls panel, click Setup to access this option.

Crop effect

The Crop effect trims pixels from the edges of a clip.

The Left, Top, Right, and Bottom properties specify what percentage of the image to remove.

Note: You can directly manipulate the crop in the Program monitor. Click the Transform icon next to Crop in the Effect Controls panel. Drag the corner handles in the Program Monitor.

Select Zoom to scale the cropped image to fit the frame.

More Help topics

“Adjust position, scale, and rotation” on page 293

Edge Feather effect

The Edge Feather effect lets you vignette the video in a clip by creating a soft black border on all four sides. The border width is controlled by entering an Amount value.

See Andrew Devis' video tutorial on Creative Cow: "Color Correction 3: Vignette Techniques."

Rich Young collects several techniques on the AETUTS+ website for creating vignettes.

Last updated 1/16/2012