How to use ae deduction for pr?

If you are a photography enthusiast, when shooting a video, you will definitely encounter a time when you are dissatisfied with the background, which will greatly reduce the quality of your video works. It is really a headache. It doesn't matter. In this article, I will explain how to use After Effects to key videos. After reading this article, you can replace trees with flowers on the video screen, which can achieve unexpected results.

Tools/raw materials

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A computer with a 64-bit operating system, a post-processing software Adobe After Effects CC video material (try to use a monochrome background).

Methods/steps

110 step by step reading

When shooting many large-scale TV dramas, stunt people need to hang people with steel wires to shoot people walking around or flying around in the clouds. After filming, they have to match the lens to shoot. This situation needs to be exploited.

After removing the CC simple wire from the Effects key filter group, use the point 1 and point 2 to control the position handle of the bright spot to control the starting point and the ending point of the wire, and then adjust the thickness of the wire to complete the matting.

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Keylight keying matting can achieve excellent results, and the picture can be interpreted very harmoniously. The method is to add the Keylight effect in After Effects CC software to the video material to be matting, and use the screen color eyedropper tool to absorb the color in the video picture, so that the effect after matting can appear immediately. If you use the screen gain and screen harmony properties at the same time, the effect will be more perfect.

AE software also has a lot of preset matting, which will better help you achieve the desired effect.

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The difference mask effect will also achieve excellent results, but compared with other effects, this filter must use a tripod or other fixed objects to fix the camera position, because its principle is to compare a different layer with its original layer, and then make the places with the same color and position attributes in the video display transparent, so it is more suitable for shooting video materials with fixed camera position.

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After the brightness effect is applied to the video material, this special effect can cut out the pixel area of the video material similar to the user-defined brightness value; By adjusting the brightness clipping attribute, the part with strong brightness can be clipped; The low brightness (darkness) can be cut out by adjusting the dark clipping attribute; By adjusting and deducting the attributes of similar areas, the parts within the threshold can be cut out; Adjust and deduct the dissimilar areas, then the parts outside the threshold range will be cut off.

Usually we will match the brightness and contrast effect.