VIDEO ENCODING DEVICE AND METHOD, VIDEO ENCODING PROGRAM, AND RECORDING MEDIUM CONTAINING THE PROGRAM

摘要

It is possible to provide a video encoding device and method which execute an orthogonal conversion on a predicted error signal between a video signal in a region to be encoded and its predicted signal, quantize an orthogonal conversion coefficient obtained as a result of the conversion, with a preset quantization step size, and encode the coefficient. A prediction error power as power of the predicted error signal is calculated. The calculated prediction error power, the preset quantization step size, and the upper limit value of the generated code amount in the region to be encoded are inputted so as to judge whether a code amount generated when performing quantization with the preset quantization step size exceeds the upper limit value. According to the judgment result, the encoding process is modified.