Video-encoding and video-encoding control method

A video-encoding control device for exerting control over encoding based on an occupied amount of a virtual buffer, the occupied amount being determined based on the amount of codes generated at the time where video signals are encoded and the amount of codes transferred to an output destination, the video-encoding control device comprising:

• recording-mode determination means for determining whether or not seamless connection between a preceding chapter and the following chapter that are included in the video signals is feasible and setting an initial value of the occupied amount of the virtual buffer based on the determination result;
• occupied-amount update means for updating the occupied amount of the virtual buffer every time the encoding is performed;
• optimum-occupied-amount calculation means for calculating a predetermined optimum occupied amount based on the updated occupied amount of the virtual buffer;
• target-code-amount calculation means for calculating a predetermined target-code amount based on the video signals of the following chapter;
• and
• target-code-amount adjustment means for adjusting the target code amount so that the sum total of the occupied amount of the virtual buffer and the target code amount does not exceed the optimum occupied amount and using the adjusted target code amount for the encoding.

A video-encoding control method for exerting control over encoding based on an occupied amount of a virtual buffer, the occupied amount being determined based on the amount of codes generated at the time where video signals are encoded and the amount of codes transferred to an output destination, the video-encoding control method comprising:

• a step for determining whether or not seamless connection between a preceding chapter and the following chapter that are included in the video signals is feasible;
• a step for setting an initial value of the occupied amount of the virtual buffer based on the determination result;
• a step for updating the occupied amount of the virtual buffer every time the encoding is performed;
• a step for calculating a predetermined optimum occupied amount based on the updated occupied amount of the virtual buffer;
• a step for calculating a predetermined target-code amount based on the video signals of the following chapter;
• and
• a step for adjusting the target code amount so that the sum total of the occupied amount of the virtual buffer and the target code amount does not exceed the optimum occupied amount and using the adjusted target code amount for the encoding.

A video-encoding control method for exerting control over encoding based on an occupied amount of a virtual buffer, the occupied amount being determined based on the amount of codes generated at the time where video signals are encoded and the amount of codes transferred to an output destination, the video-encoding control method comprising:

• a step for determining whether or not seamless connection between a preceding chapter and the following chapter that are included in the video signals is feasible;
• a step for determining an occupied amount of the virtual buffer immediately before the video signals of the following chapter are transferred to the virtual buffer to be an initial value of the occupied amount of the virtual buffer, where it is determined that the seamless connection is feasible based on the determination result, and setting the initial value of the occupied amount of the virtual buffer to zero, where it is determined that the seamless connection is infeasible;
• a step for updating the occupied amount of the virtual buffer every time the encoding is performed;
• a step for calculating a predetermined optimum occupied amount based on the updated occupied amount of the virtual buffer;
• a step for calculating a predetermined target-code amount based on the video signals of the following chapter;
• and
• a step for adjusting the target code amount so that the sum total of the occupied amount of the virtual buffer and the target code amount does not exceed the optimum occupied amount and using the adjusted target code amount for the encoding.

A program for exerting control over encoding based on an occupied amount of a virtual buffer, the occupied amount being determined based on the amount of codes generated at the time where video signals are encoded and the amount of codes transferred to an output destination, the program being provided for making a computer execute:

• a step for determining whether or not seamless connection between a preceding chapter and the following chapter that are included in the video signals is feasible;
• a step for determining an initial value of the occupied amount of the virtual buffer based on the determination result;
• a step for updating the occupied amount of the virtual buffer every time the encoding is performed;
• a step for calculating a predetermined optimum occupied amount based on the updated occupied amount of the virtual buffer;
• a step for calculating a predetermined target-code amount based on the video signals of the following chapter;
• and
• a step for adjusting the target code amount so that the sum total of the occupied amount of the virtual buffer and the target code amount does not exceed the optimum occupied amount and using the adjusted target code amount for the encoding.

A program for exerting control over encoding based on an occupied amount of a virtual buffer, the occupied amount being determined based on the amount of codes generated at the time where video signals are encoded and the amount of codes transferred to an output destination, the program being provided for making a computer execute:

• a step for determining whether or not seamless connection between a preceding chapter and the following chapter that are included in the video signals is feasible;
• a step for determining an occupied amount of the virtual buffer immediately before the video signals of the following chapter are transferred to the virtual buffer to be an initial value of the occupied amount of the virtual buffer, where it is determined that the seamless connection is feasible based on the determination result, and setting the initial value of the occupied amount of the virtual buffer to zero, where it is determined that the seamless connection is infeasible;
• a step for updating the occupied amount of the virtual buffer every time the encoding is performed;
• a step for calculating a predetermined optimum occupied amount based on the updated occupied amount of the virtual buffer;
• a step for calculating a predetermined target-code amount based on the video signals of the following chapter;
• and
• a step for adjusting the target code amount so that the sum total of the occupied amount of the virtual buffer and the target code amount does not exceed the optimum occupied amount and using the adjusted target code amount for the encoding.