Video encoding apparatus and method, video encoding program, and storage medium which stores the program.

摘要

A video encoding apparatus and a corresponding method for applying orthogonal
transformation to a prediction error signal between a video signal of an
encoding target
area and a predicted signal for the video signal, and quantizing an obtained
orthogonal
transformation coefficient by using a preset quantization step size so as to
encode the
coefficient. A prediction error power which is a power of the prediction error
signal is
computed. For input information such as the computed prediction error power,
the preset
quantization step size, and an upper limit of an amount of code generated for
the
encoding target area, it is determined whether or not an amount of code
generated when
performing quantization using the preset quantization step size exceeds the
upper limit.
An encoding process is changed based on a result of the determination.