Heavy thick smoke slowly looping, HD 24p, with alpha channel and green screen for transparent background
 
KEYWORDS:
rising smoke, alpha channel, gas, mist, steam, smoke, isolated, vapor, fog, fire, explosion, burning, blast, layer, transparent, cloud, nature, particles, flowing, air, smog, mystery, exhaust, haze, atmosphere, backgrounds, cold, frozen, 4k, video, clouds, texture, backdrop, black, motion, slow, burn, flame, smoking, swirl, effect, flow