1. A method of encoding video content, the method comprising: assigning a predefined quantization model to each of at least two regions of interest of video content, wherein a respective region of interest of the at least two regions of interest comprises a rectangular-based region covering less than a full frame identified on a frame-by-frame basis by a first sub-segment in the respective region of interest and a last sub-segment in the respective region of interest, wherein the first sub-segment and the last sub-segment define a structure based on a number of sub-segments in the respective region of interest; and encoding at an encoder each of the at least two regions of interest differently based on the predefined quantization model assigned to the respective region of interest.