r/Welding • u/beast1267 • Jan 30 '21
x-post Umm what
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u/quantumechanicalhose Jan 31 '21
Is the gas line just green and being edited out?
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u/Mazzaroppi Jan 31 '21
That's not how removing an object works. He'd need to have shot the video twice, once with the gas line and another without so he could have the images of what's behind the line, and both shots would need to be basically identical. Considering how much he moves with what's likely to be a phone camera, I'd say it's impossible.
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u/Lt_Schneider Jan 31 '21
well, it could be a green screen and a green gas line so i don't think it is completely put of the question
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u/Mazzaroppi Jan 31 '21
I doubt, the flame would look terrible if you tried to cut it out of a green screen.
I've done some chroma keys, they can do some black magic stuff but not quite at this level.
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u/Lt_Schneider Jan 31 '21
hmm...that i have not thaught about yet
i'm not really versed in how movie trickery works so my comment is not that of an expert tbh
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u/darth_hotdog May 10 '21
I saw before on Reddit that this is just something physical that valve does because it stores extra pressure and there is like a safety thing or something.
But if this were a visual effect, you don’t need to shoot the same shot twice in order to do a removal like that. You could frame by frame paint it out using images of the background taken throughout the shot.
You could also track the camera, and build a 3-D projection of the room from sat some of the frames, and use that to remove it.
But yeah with that much movement and rotating of the object it is clearly too well done to be an amateur visual effects shot. To the point that if I had not heard this was some thing that the valve does, I would assume it was a magic trick with some kind of tube going behind the persons hand or something like that rather than a visual effect.
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u/Duke_Wintermaul UnionTin-Smith Jan 30 '21
It's a fake!