Wednesday, 15 April 2015

Technical Report - Green Screen Sequences

The majority of the green screen sequences we filmed in the end were not originally in the script and  only got chosen after problems getting locations. I met with the director to discuss what we were going to do to replace the shots we couldn't get from the script and we decided to film 2 scenes just on green screen after coming up with the idea of the stop motion. I had already done research into green screen last semester so I was well prepared in dealing with the larger quantity of footage.

The first thing I did was create 2 video tracks and layer the green screen footage on the top track with the stop motion on the bottom.
Layering video tracks.
After doing this I applied the Spectrematte effect onto the top green screen layer and selected the colour that I wanted the Matte to apply to by dragging the select colour icon onto the green of the video.
Selecting the colour
This made the 1st video track visible but also created a slight green glow around Daniel. To negate this I altered the Matte Processing which eroded the edges around Daniel, smoothing out the green screen's "spill".
Smoothing out the edges around Daniel.
This did the job fairly effectively but to make sure it was completely negated and looked 'realistic' I altered the 'Inner Softness' which merged the background and foreground more.
Using inner softness to merge background with Daniel.
Finally I did some quick light matching to make turn down the brightness of the green screen shot to make it fit more easily with the lighting of the background.
Doing preliminary colour correction.
After completing both sequences I viewed the whole film again to make sure they fit in with the narrative and visual style and I believe they do. They also help build on the themes of childlike whimsy and imagination effectively and keep in line with the films fantasy nature.

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