What are the ways to set up a key in Premiere Pro CS4

Chroma key is made transparent by comparing the color differences of the target, with blue screen or green screen keying being commonly used.

To compose a key, you generally need to place the footage on at least two tracks, the top and bottom of the keyed layer and the background layer. The keying layer refers to the footage (frame) that the person takes in front of a blue or green background, and the background layer refers to the new background material (frame) that you want to add behind the person. And the keying layer is on top of the background layer, so that after setting the keying effect for the object, the background layer underneath can be revealed.

The blue screen key and the green screen key are commonly used keying techniques in film and television post-production. In Premiere Pro CS4, it's as simple as dragging effects onto 2 tracks of footage in the timeline window, without the need for complex adjustments.

Hold down the Blue Screen Key item in the keying effect (or select the Green Screen Key item if the background of the keyed layer footage is green) and drag it to release it on the keyed footage in the 2nd track of the Timeline window. At this point, we can see in the program window that the blue (or green) background has been removed, leaving only the characters and the underlying composite image.

Press the (Enter) key to see the composite effect in the program window.

If you need to key footage with a different color background, you can follow the steps above and hold down the Chroma Key item in the keyed effect and drag it to the keyed footage in the Timeline window**2 track. Then click the "Effect Console" tab at the top of the footage window, and click the small triangle button in front of the "Chroma Key" to apply the effect. Select the eyedropper tool in the Color option and drag and drop it onto the color you want to cut out in the program window to release it and pick up the color.

After absorbing the color, you can adjust the following parameters and observe the keying effect. For example, the "similar" parameter controls the tolerance with the key color, the higher the tolerance, the more the color close to the specified color is transparent, and the lower the tolerance, the less the color is transparent; "Blend" adjusts the color mix of transparent and opaque boundaries; The "beginning" is the amount of adjustment to the dark part of the image; "Cut out" is to use the purity key to adjust the dark details; options in Filter to create soft edges for the parts of the material that are transformed.

In Adobe Premiere Pro CS4, there are several ways you can set up a key:

Use Ultra Key: Ultra Key is a very powerful keyer in Premiere Pro CS4 that can key images based on color or brightness values. Use this tool to quickly and accurately separate the subject in ** and place it on another background.

Use chroma key: Chroma key is a common keying technique that separates an object from ** based on its color value. In Premiere Pro CS4, you can use the Chroma Key effect to key a green or blue screen background.

Use a mask: A mask is a manual keying technique that allows you to create a shape in ** and show only what's inside that shape. In Premiere Pro CS4, you can use the Matte effect to manually create a keyed effect.

Use Track Matte: Matte is a keying technique based on the relationship between layers, which uses the transparent part of one layer to key another layer. In Premiere Pro CS4, you can use the Mask effect to create this effect.

It is important to note that each of the above methods has its applicable scenarios and limitations. According to your specific needs and material situation, choose the appropriate method for keying.

It is recommended to use ae to pick it, and the pr pick is not good.

1. Open the PR software and create a new project.

2. Name the project.

3. Set the project parameters, you can feel free here.

5. Drag the imported footage to the timeline.

7. Set the parameters in the special effect control, and preview the effect in the window on the right.

PR Key:

1. Open the PR software and create a new project.

2. Name the project.

3. Set the project parameters, you can feel free here.

4. Import the material you want to key.

5. Drag the imported footage to the timeline.

6. Set the parameters in the special effect control and preview the effect in the window on the right.

PR keying is generally not used! And the default PR doesn't have a keying function. Compositing is just chicken ribs for PR, and his biggest function lies in editing.

If you want to key, it's usually AE, and you can use the well-known Keylight plug-in to perfectly realize the keying function.