Video quality of service management and constrained fidelity constant bit rate video encoding systems and method
First Claim
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1. An apparatus for coding video data comprising:
- a quality setting adjustment unit configured to adjust parameters used to modify video data, the parameters including a maximum coding quality setting;
a preprocessing unit responsive to the quality adjustment unit to modify the video data;
a coding precision unit which is configured to adjust a number of bits used in a coding operation for coding the video data;
a core coding unit receiving data from the preprocessing unit, the coding precision unit responsive to the coding precision unit to encode the video data at a constant bit rate,wherein the coding precision unit receives the maximum quality setting from the quality setting adjustment unit which indicates a maximum coding quality to be used on the video data, andwherein the quality setting adjustment unit receives a bandwidth reclamation factor that indicates an amount of bandwidth to be made available on average that is used to determine the maximum coding quality setting,the apparatus further including at least one memory device for storing code that is executed by at least one processor controlling the quality setting adjustment unit, the preprocessing unit, the coding precision unit and the core coding unit to enable the configuration and the responsiveness provided by each respective one of the units.
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Abstract
A constrained variable rate coding technique limits the number of bits used in an encoding process. A quality setting indicates a maximum level of quality to be used in the encoding process which limits the number of bits used in the encoding process. A bandwidth reclamation factor which indicates an amount of bandwidth to conserve may also be used with the quality setting. The constrained variable rate coding technique using a lower quality encoding process for less complex video data and a higher quality encoding technique for higher quality video data.
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Citations
12 Claims
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1. An apparatus for coding video data comprising:
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a quality setting adjustment unit configured to adjust parameters used to modify video data, the parameters including a maximum coding quality setting; a preprocessing unit responsive to the quality adjustment unit to modify the video data; a coding precision unit which is configured to adjust a number of bits used in a coding operation for coding the video data; a core coding unit receiving data from the preprocessing unit, the coding precision unit responsive to the coding precision unit to encode the video data at a constant bit rate, wherein the coding precision unit receives the maximum quality setting from the quality setting adjustment unit which indicates a maximum coding quality to be used on the video data, and wherein the quality setting adjustment unit receives a bandwidth reclamation factor that indicates an amount of bandwidth to be made available on average that is used to determine the maximum coding quality setting, the apparatus further including at least one memory device for storing code that is executed by at least one processor controlling the quality setting adjustment unit, the preprocessing unit, the coding precision unit and the core coding unit to enable the configuration and the responsiveness provided by each respective one of the units. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An apparatus for coding video data comprising:
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a video analyzer unit which is configured to determine the coding complexity of the video data and provide a video complexity factor; a quality setting adjustment unit which receives a bandwidth reclamation factor that indicates an amount of bandwidth to be made available and also receives a video complexity factor from the video analyzer unit, the quality setting adjustment unit configured to provide a maximum quality setting; a coding precision unit which is configured to adjust a number of bits used in a coding operation for coding the video data, a core coding unit responsive to the coding precision unit which is configured to encode at a constant bit rate, wherein the coding precision unit receives the maximum quality setting which indicates a maximum coding quality to be used on the video data from the quality setting adjustment unit, the apparatus further including at least one memory device for storing code that is executed by at least one processor controlling the video analyzer unit, the quality setting adjustment unit, the coding precision unit and the core coding unit to enable the configuration provided by each respective one of the units. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification