Experimental Only fully supported and tested for output type of videos and service type blur! Areas of interest's top left corner coordinates x and y, their height and width. Each area must be provided as a string in the following format [x,y,width,height]. Multiple areas can be defined but are not allowed to overlap. For example, one area "...&areas_of_interest=[0,0,960,540]", two areas "...&areas_of_interest=[[0,0,960,540],[0,540,960,540]]", two areas "...&areas_of_interest=[0,0,960,540]&areas_of_interest=[0,540,960,540]". The parameter might not yet fully work with all parameters and output types.