To provide a moving image encoder which performs moving picture coding by a variable bit rate control system for dissolving making into picture between pictures in a GOP.
A picture type-by-image type quantization step calculation part 206 calculates a first quantization step regarding an I picture of the current GOP by multiplying the ratio between a reference target coding amount and a target coding amount of the current GOP to be coded from now on by a reference quantization step of the I picture and calculates a second quantization step, regarding a P picture and a third quantization step regarding a B picture, on the basis of the first quantization step. In the picture type-by-picture type quantization steps (the first to third quantization steps) calculated by the picture type-by-picture type quantization step calculation part 206, quantization by the corresponding quantization step is performed according to each picture type.
TAKEHARA HIDEKI
MORISHIGE TAKASHI
FUKUSHIMA SHIGERU
ANDO ICHIRO
