Falling rocks debris, pieces of stone rocks falling from left side of the screen and scattering on imaginary flat surface, green screen, animation overlay for chroma key transparent blending

rocks falling spreading scattering scattered rocks demolition demolished explosion stone debris green screen stone animation falling debris motion graphics small rocks stone fragments rocks on green screen overlay debris scatter debris on green expolosion screen overlay video chroma key special effects digital effects visual effects postproduction film editing movie making cgi compositing keying virtual set keying process vfx chroma keying flat surface stone material rubble broken destruction hitting splattering digital compositing demolition debrie mining wreck dynamite overlay