Advanced VFX, in class assignment 1

July 1, 2015 at 2:08 pm (School) (, , , , , )

One of our first in-class assignments was to take a green-screened actor and remove his arm. The footage was delivered as a TIF sequence, so basically instead of a .mov file, we got a folder of each movie frame as individual images. Like so…

Screen Shot 2015-07-01 at 6.36.47 AM

This is actually pretty common and is easier for some programs to handle, especially the one we were using to composite: Nuke.

So here is the first frame up close:


As you can see, the floor was dirty and the green a little uneven. Several key nodes were used to knock out that green and masks, of course, to hide that equipment in the corner and disappear the arm. Now where to put our zombie?

I found this room that could pass as a storage-type space, but most importantly, it was very large and at a good perspective. And the lighting was pretty even so it wouldn’t fight with the zombie footage. Of course it’s awfully bright, but that is what post is for, amiright?Theatre-Empty-2

So I comped the zombie and the room together. Did some color grading to give the ambience more of a cold, sickly feel. Added some questionably placed blood splattering (hey this was all in class after all…). And BAM: zombie sequence.

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backlog of updates: advanced vfx

January 10, 2014 at 4:28 pm (School) (, , , , , , , , , , , , , , , )

There are a lot of little assignments for these VFX classes and most of them are in class exercises, which does not leave a lot of time for perfecting, but we do learn a lot. In any case, here are some highlights.

Week 1: sky replacement. We had to take a clip of people waking across the screen and replace the sky. I also stabilized the shot so there was no camera shake. This was using Nuke for all of the effects and compositing (make sure to watch these on 360p, the lower setting looks like total crap).

Original clip:

Sky Replacement:

Week 6: compositing and motion tracking. In Nuke, I tracked the motion from the clip and exported the data to Cinema 4D. In C4D, I matched a plane to the ground and put a sphere on it textured to roughly match the stone in the clip. I added lights to match the lighting in the clip. Then rendered passes so the C4D camera recorded the sphere to match the footage. Then put renders back into C4D and composite everything together. Whee!

Final Project: This is basically like the Week 6 assignment, but more complicated. I added transparency and reflections into the mix to make these floating alien water cubes fly in formation across the screen. I also darkened everything to make it more moody and creepy.


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