This document provides instructions for three video editing techniques in Adobe Premiere: 1) Highlighting part of an image by creating a blue shape over the video and darkening the rest with a black rectangle. 2) Creating a ghost effect by overlaying the same shot with and without an actor at 30% opacity. 3) Blurring part of an image by applying a blur effect to a copy of the clip, and using a crop filter to blur only the desired area.

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TUTORIAL 3
Highlight Part of an Image in Premiere
This page demonstrates the use of keying to highlight part of an image in a
video. The goal is to darken the whole frame except for the area we want to
highlight. This effect is often used to identify one subject in an image containing
multiple subjects, as per the example on the right.
Instructions
1. Place the video clip on the timeline.
2. With the Current Time Indicator over the clip, create a new title.
3. Select Show Video so you can see the clip below the title.
4. Using one of the titler's shape tools, create a shape to become the
highlight area. Our example uses an ellipse.
5. In the Title Properties window, set the Fill colour to pure blue (hex
colour 0000FF).
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6. When you are happy with the size and position of the shape, create a new
black rectangle shape that covers the entire frame. This will become the
darkened area.
7. Right-click the shape and select Arrange > Send to Back. This
places the rectangle behind the highlight shape.
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8. Place the title in the timeline on a track above the video clip. Adjust the
opacity of the title until the dark area has the right amount of transparency
(about 50% should be okay — you can tweak it later).
9. Apply the Color Key effect to the title (Effects > Video Effects >
Keying).
10. Select pure blue (0000FF) as the key colour.
11. Adjust the Color Tolerance, Edge Thin and Edge Feather until
the highlight looks right. The example settings shown here should work in
most situations.
12. If necessary, fine-tune the shape and opacity of the highlight.
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Ghost Effect
Creating a ghost effect for video is quite simple, as long as you have an editing
package capable of using layers and setting layer opacity.
First of all, set the camera up on a tripod and frame the shot. Shoot the scene
empty (without the ghost), then shoot the scene again with the ghost actor. It's
very important that both versions (takes) of the shot are framed identically, so
don't move the camera at all. The background also needs to be still.
Import both takes of the shot into your Adobe Premiere. Place the empty shot on
the first video track and the ghost shot on the next track.
Set the opacity of the ghost shot to around 30%, or whatever setting achieves the
best result.
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Note: You might like to add a spooky sound effect for added impact.
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How to Blur Part of an Image
This page shows you how to blur or pixelate part of a video image. This
technique is commonly used to blur a face in order to protect the subject's
identity.
This technique uses two video tracks, and can be used with any editing
application which supports multiple tracks/layers.
To begin, place the video clip on the timeline. Make an exact copy of the clip and
place it on a video track directly above the original clip like so:
From the effects palette, add a blur or pixelate effect to the top track. Set the
amount of blur as desired. The example above uses a gaussian blur (Video
Effects > Blur & Sharpen > Gaussian Blur) set to 27.
At this stage the entire image on the top track is blurred (or pixelated). To blur
only the face, add a crop filter (Video Effects > Transform > Crop) to the
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top track. Adjust the crop parameters (left, top, right, bottom) until only the
blurred face remains.
The screenshot on the right shows the effects we have added: Gaussian Blur
and Crop.
Note: If the face (or whatever you are blurring) moves around a lot, there are
two options:
1. Make the blurred area big enough to accommodate the movement.
2. Use keyframes to animate the crop effect.
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