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View Full Version : Rotoscoping Burning Material

dell
10-02-2006, 02:38 PM
Hi All

Just need some advice in regards to rotoscoping a buring material.



I need to show a piece of cloth being burnt, but am not able to shoot it against a totally clear background. I don't have access to greenscreen "only a DV camera here", etc. So the only way I could this is by rotoscoping the cloth & fire.

Do you guys/gals have any advice, as rotoscoping smoke and fire seems difficult.

Thank you.
bartrobinson
10-02-2006, 03:13 PM
I think I'd avoid that. The usual technique is to shoot over black for something like that.
hiphopcr
10-02-2006, 10:25 PM
You don't need a totally clear background or a green screen. A black cloth is perfect, just something that will help the fire's brightness show up so you can grab it with a luma key.

Fire and smoke are very forgiving with their keys too, since they have wobbly edges anyway :)
dell
10-03-2006, 08:43 AM
Of course, thanks a lot
payton
10-03-2006, 12:27 PM
so you can grab it with a luma key. Fire and smoke are very forgiving with their keys too, since they have wobbly edges anyway :)

well, but even better than luma-keying the fire, is to instead use blending modes like add or screen. thats why they shoot it on black.

good luck,
payton
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10-03-2006, 12:27 PM
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