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

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