Program, device, and method for generating significant video stream from original video stream

A significant video stream generation device which generates a significant video stream from a captured and coded original video stream, the significant video stream generation device comprising:

• a memory storing instructions;
• and
• one or more processors connected to the memory and configured to execute the instructions to perform processing of:
• extracting a coding parameter of each macroblock for each frame from the original video stream;
• selecting the macroblock that has a coding parameter satisfying a predetermined condition, as a significant macroblock;
• and
• generating the significant video stream, in which a group of frames of the original video stream temporally synchronized with frames of coding parameters in significant macroblocks are combined in time series, wherein
• the coding parameter extracted from the macroblock and used for the predetermined condition includes
• an angle of a motion vector in a direction of a vanishing point with an associated temporal change.

A method for generating a significant video stream from a captured and coded original video stream, the method comprising:

• extracting a coding parameter of each macroblock for each frame from the original video stream;
• selecting the macroblock that has a coding parameter satisfying a predetermined condition, as a significant macroblock;
• and
• generating the significant video stream, in which a group of frames of the original video stream temporally synchronized with frames of coding parameters in significant macroblocks are combined in time series, wherein
• the coding parameter extracted from the macroblock and used for the predetermined condition includes
• an angle of a motion vector in a direction of a vanishing point with an associated temporal change.