Video encoding device, video decoding device, video encoding method, video decoding method and program

A video decoding device, comprising:

• a demultiplexer that demultiplexes a bitstream in which a quantized information bitstream having one part of control information of a compression and decompression control encoded therein, the control information other than said one part of the information, and a video bitstream have been multiplexed;
• a quantized information decoder that decodes the demultiplexed quantized information bitstream with a predetermined method, and extracts said control information of the compression and decompression control;
• a video decoder that decodes the demultiplexed video bitstream based on a prediction;
• a reference picture compression unit that compresses a reference picture to be employed for said prediction;
• a reference picture storage that stores said compressed reference picture;
• a reference picture decompressing unit that decompresses the compressed reference picture stored into said reference picture storage;
• and
• a compression and decompression controller that controls said reference picture compressing unit and said reference picture decompressing unit based on said demultiplexed control information and said extracted control information.

A video encoding method, comprising:

• encoding an input video based on a prediction;
• compressing a reference picture to be employed for said prediction based on a predetermined control information;
• storing said compressed reference picture;
• decompressing said stored compressed reference picture based on said predetermined control information;
• encoding one part of said control information with a predetermined method and generating a quantized information bitstream;
• and
• multiplexing said encoded video bitstream, said quantized information bitstream, at least the control information other than said encoded information.

A video decoding methods, comprising:

• demultiplexing a bitstream in which a quantized information bitstream having one part of control information of a compression and decompression control encoded therein, at least the control information of the compression and decompression control other than said one part of the information, and a video bitstream have been multiplexed;
• decoding the demultiplexed quantized information bitstream with a predetermined method, and extracting said control information of the compression and decompression control;
• decoding the demultiplexed video bitstream based on a prediction;
• compressing a reference picture to be employed for said prediction based on said demultiplexed control information and said extracted control information;
• storing said compressed reference picture;
• and
• decompressing said stored compressed reference picture based on said demultiplexed control information and said extracted control information.

A non-transitory computer readable storage medium storing a program for causing an information processing device to execute the processes of:

• encoding an input video based on a prediction;
• compressing a reference picture to be employed for said prediction based on a predetermined control information;
• storing said compressed reference picture;
• decompressing said stored compressed reference picture based on said control information;
• encoding one part of said control information with a predetermined method and generating a quantized information bitstream;
• and
• multiplexing said encoded video bitstream, said quantized information bitstream, and the control information other than said encoded information.

A non-transitory computer readable storage medium storing a program for causing an information processing device to execute the processes of:

• demultiplexing a bitstream in which a quantized information bitstream having one part of control information of a compression and decompression control encoded therein, the control information other than said one part of the information, and a video bitstream have been multiplexed;
• decoding the demultiplexed quantized information bitstream with a predetermined method, and extracting said control information;
• decoding the demultiplexed video bitstream based on a prediction;
• compressing a reference picture to be employed for said prediction based on said demultiplexed control information and said extracted control information;
• storing said compressed reference picture;
• and
• decompressing said stored compressed reference picture based on said demultiplexed control information and said extracted control information.