You can choose from various methods available in Premiere Pro for Chroma Key. They are really simple to do actually. Ultra Key is mostly used for keying out colors in your video and make them look transparent. You might not find it immediately on the effects displayed in Premiere. Follow these steps to locate where the ultra key is and how you will key out green screen. Tip: Alpha Channel will help you see if all the greenscreen is keyed out. That way, you can easily identify and perfectly cancel out greenscreen.
A similar tool just like Ultra Key but this for this one, you can adjust the edge thin and edge feathering. This would be your second option if using the ultra key did not bring the results that you pictured out. Make sure that you have 2 video clips on your project window. One should be a clip with a green screen background and the other should be a normal video clip that you want as a background.
Tip: The reason why you have to put it on track 2 is that if you have a stack of videos into your timeline, whatever is in the lowest track will show in the front.
In this case, we want the video of the 2 girls to appear in the front. If your green screen video has dark corners or vignette around it, you can opt to crop it for easier chroma keying.
Cropping will help you in removing stubborn areas in your green screen video. It works in any color too. If you decrease the threshold, you will see that it will decrease it until it removes all the green screen in the background, and it will also allow you to adjust the cut off amounts of what is included or excluded from the mask.
The non-red key also allows you to defringe based on a green or blue screen. If you defringe green, it will let you blend everything. If you want to insert a green screen video inside a monitor, phone screen, tablet, or television in the existing video, that is also possible.
It may look complicated, but actually you are just doing the whole process twice. You should see 3 options that gives you different types of control when determining the shape of the garbage matte around your subject:. Make sure the clip in the timeline is selected and then double-click the garbage matte of your choice. Or, you can simply grab the garbage matte and drag it onto the clip in the Timeline. In the Source monitor, under the Effect Controls, scroll down to reveal the Garbage Matte parameters.
Click in the crosshairs and drag to reposition them around the subject. NOTE: When you move the garbage matte points, be sensitive of motion in your subject. If the subject is in motion you also have the option to apply keyframes to your matte to move it along with the subject. With the garbage matte in place, you can now focus on removing the colour that is contained within the matte. Using the Ultra Key. Select the chroma key clip in the timeline and then double-click the Ultra Key filter to apply it.
Or you can grab the filter and drag it onto the video that contains your chroma key shot. In the Source panel, click the Effect Controls tab and reveal the drop-down items under the Ultra Key filter. You will notice an eyedropper where it says Key Colour. Select the eyedropper and click in the Program monitor on top of the colour that you want to remove from the shot.
If the video is shot well, with the chroma key colour evenly lit, then removing the colour entirely can be done in this one simple step using the eyedropper. In the Program monitor, everything that is black is transparent in the shot, and everything that is solid white is opaque. In this example, note that some white or grey fragments are visible around the subject.
These bright spots need to be removed otherwise they will become partially transparent in these parts of the picture. Use the Matte settings to adjust the highlights to remove bright spots. The key should be much cleaner. Each setting has a different purpose:. Contrast improves the black and white image to help define the key more clearly. Spill suppression adds colour, opposite on a colour wheel, to the key colour.
For example, when using a green screen, spill suppression will add some magenta to the edges of the subject.
0コメント