Video Encoder Bit Estimator for Macroblock Encoding

摘要

A video transmission system includes an encoder to receive video images, and encode them for transfer to a decoder. The video images include macroblocks having data that are encoded according to a prediction mode, such as inter-prediction or intra-prediction. A bit estimator for the encoded macroblock within the encoder estimates a size for the encoded macroblock and predicts whether it will be an illegal size. The bit estimator applies a bit estimation function using a number of header bits and a number of texture bits based on the prediction mode and transformed data of the macroblock.

主权项

1. A method for predicting an illegal macroblock within a video encoder, the method comprising:
deciding a prediction mode based on a type of a macroblock within a video image; performing a transform on data within the macroblock; performing a bit estimation function to predict a size of the macroblock based on the prediction mode and the transformed data; and comparing the predicted size to a threshold.