Video Encoder Rate Control via Bit Count Estimation

The patent performs preliminary actions by estimating the bit count before the advanced entropy encoding process completes. The bit count estimator predicts the number of bits that will be produced after entropy encoding, allowing the rate controller to make quantization decisions without waiting for the actual encoding to finish. This preliminary estimation resolves the contradiction by enabling real-time control while maintaining advanced entropy encoding.

The patent introduces a bit count estimator as an intermediary component that bridges the gap between the advanced entropy encoder and the rate controller. This estimator acts as a mediator that provides real-time bit count predictions without requiring the actual entropy encoding to complete, thus maintaining both real-time control capability and high compression ratios achieved by advanced entropy encoding.

The patent implements a feedback mechanism where the bit count estimator provides continuous real-time predictions to the rate controller, which adjusts quantization parameters accordingly. This feedback loop operates without the delays inherent in waiting for actual entropy encoding completion, enabling both system stability through continuous control and video quality optimization by preventing bandwidth waste from late adjustments.