Adaptive macroblock-level QP value estimation algorithm in video coding

New video coding systems offer very high efficiency. They can achieve good compression ratio while maintain high image quality. It is provided due to sophisticated inter-frame prediction methods. Each inter-frame, P or B type, requires the reference frame (I-type frame). Different coding modes causes different statistical behavior of I and P-type frames. In this presentation an adaptive macroblock-level inter-prediction frames bitrate estimation method is presented. The main goal is to create the most suitable number of macrobloks groups coded with the same quantizatin parameter value to meet bit budget provided for P-type frame being encoded.