Simple Sky Replacement

This tutorial teaches me how to create a simple sky replacement technique using Linear Wipe. Linear Wipe helps to add depth in the composition. (Image 1 shows the original video without the sky background)

Image 1

As I am replacing the sky with a still image (Image 2 shows replaced sky), the still image would not follow the camera jerk of the video. Thus using a tracker, would allow the still image to rotate or move with camera jerk.

Tracker refers to the zig zag boxes:

Image 2

As the biker is still covered by the sky in image 2.

Duplicating the video layer and placing it on top of the image, and removing the duplicated video's sky, using color key effect. Increasing the tolerance will take away the original video's sky color. Which then leaves the biker infront of the still image (Image 3).

Image 3

Lastly, to enhance the colours of the video. An adjustment layer is created and placed above all the layers. Add a adjustment effect using curves, to change the RGB colours. Alternating the curves will allow me to get warm/cool tones and enhance shadows and lighting as well.

The final product: