ENCODING BIT RATE CONTROL METHOD, DEVICE, PROGRAM, AND RECORDING MEDIUM CONTAINING THE PROGRAM

摘要

Provided is an encoding bit rate control method used in video encoding which can perform switching between an in-frame prediction and an inter-frame prediction. The method measures generated code amounts of information to be quantized and information not to be quantized concerning an encoded picture. According to the two measurement results, the method calculates a ratio of the generated code amount of the information not to be quantized against all the generated code amounts. By using the generated code amount ratio of the calculated information not to be quantized, a target code amount of the picture to be encoded is decided. A complexity index is calculated for the information to be quantized concerning the encoded picture. According to the index and the ratio of the generated code amount of the information not to be quantized, it is possible to estimate a code amount generated when a picture to be encoded is encoded with a predetermined temporary quantization step size and to decide the target code amount.