Sandbags

A small compositing project I recently completed for a team of Albertan filmmakers:

The production was in need of some last-minute cleanup on a scene which they had shot against a greenscreen backdrop. The sequence involved the actors piling up sandbags in the desert as an ominous storm brewed in the background.
 
Below: A side-by-side comparison of the original footage, the initial composite the filmmakers had achieved, and my final cleaned-up composite.
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The greenscreen plates were shot on RED and supplied as 4K Prores 4444 clips. Compositing was performed in Nuke, with some common background elements assembled and pre-rendered at 6K from After Effects.
 
Before and after comparison:
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Background assets, including footage of overcast skies, were supplied by the filmmakers. My job was to re-key the shots and re-integrate them with the background plates.
 
Background elements were graded and comped with animated mist to give the scene a post-thunderstorm haze. Sky footage, which had been shot from a very low angle, was augmented and extended to introduce correct perspective lines for the shots I was working on. Artificial film grain was added to the entire background to match that of the greenscreen plates.
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While the shots were relatively easy to key, the job was complicated somewhat by a heavily-creased greenscreen backdrop which seemed to be flapping in the breeze. Additionally, a shallow depth-of-field in the shots necessitated some roto work in order to negotiate consistent matte edge quality between hard, fine foreground detail and soft, obscured background edges.
 
Below: Original footage. This shot had a camera move with no tracking markers, a pull-focus, and both fine detail (in the actress’ hair) and soft edges (around the out-of-focus background characters).
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Final composite:
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Yay! Greenscreen!
 
Find out more about Ally Was Screaming at www.allywasscreaming.com
 
 

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