CHROMA KEYING 2

Chroma Keying

Chroma key compositing, or chroma keying, is a visual effects technique for compositing (layering) two images of video streams together based on color hues (chroma range). 

The technique has been used heavily in many fields to remove a background from the subject of a photo or video – particularly the newscasting, motion picture and videogame industries. 

A color range in the foreground footage is made transparent, allowing separately filmed background footage or a static image to be inserted into the scene.

We will use a similar technique to replace a green screen background from a video and replace it with a background of our choice and blend the two in effect.

The original video to be used by us is :

Here we will remove the background greens and replace it with this background : 

to begin with we use a software called nuke and in nuke we use primatte node to remove the greens from the background and we are left with an extracted video

we add a little color correction and blur to reduce the spills and to tone the character and we have a chroma keyed video

Now we add in a muzzle flash to give a bullet firing effect to the clip
For this we again take a muzzle firing green screen clip as below:

We now use another primatte node again to remove the greens from the muzzle flash clip

now we add a transform node and bring adjust the muzzle flash onto the gunpoint

we now track the footage and attach the muzzle flash onto the gunpoint so that the firing moves with the gun
and then add some light to show a little bullet burst lighting on the main character

we now add the background to the clip and adjust and make some color corrections

we also add in some fog to show a war effect

now we finally go through the nodes and see our complete composition

The final output is:

hope you like it!!!

Till next time keep animating and learning.