Auto generate mask of movement?

I have a clip of a person walking around a scene and a clip without them to walk (the background). I want to apply a different color for the person walking, so I'll need of course a mask around them on the top layer. How can I auto generate a mask of the moving person instead of readjustment of the image by image mask?

Y at - it a mask of move motion and auto track tool?

For the difference matte to work managers must be almost perfectly identical.  This means absolutely no camera movement. This means no compression artifacts in the images. This means the high bit depth, broadband video.

If your images were shot with a DSLR, you're probably out of luck. If your images were shot with a camcorder to the consumer, you are probably completely out of luck. If your images, we turned on a professional camera and captured at a high data rate, you can have a chance.

A sample image of the film on a screen capture will help us determine if you have a chance at all. Better yet, post the video on YouTube and give us a glance.

If the images will not work, all you need to do is load the two clips in the timeline, and then apply the mast of the difference to the images with the actor. Turn off the visibility on the background layer, and then refer to that layer in the difference matte.

You will find yourself with a key player on. You can do everything that is needed for your project.

Let me say once more, difference matte is a picky real plugin. Any pixel that is not exactly like the pixel in the background source is not transparent. This means that any noise in the framework spoils the matte.

Good luck in your project.

Tags: After Effects

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