Patent ID: 8798140
Filing Date: 2014-08-05
Classification: H04N

Abstract:
1. A method of processing video frames in an encoding system, said method comprising: receiving a sequence of video frames, wherein each of said sequence of frames comprises a corresponding sequence of pixel values; and encoding each of said sequence of frames according to limiting a number of bits of each encoded frame to a pre-specified upper limit for each encoded frame, wherein each of said sequence of frames is encoded using a respective quantization parameter based on said pre-specified upper limit; receiving an average bit rate, wherein said average bit rate represents an average number of bits per unit time formed by said encoding in a duration, wherein said pre-specified upper limit is computed based on said average bit rate, wherein said encoding comprises: determining a quantization parameter for each of said sequence of frames based on said pre-specified upper limit, wherein said determining comprises: maintaining a plurality of tables, one for each of non-overlapping ranges of MTB values, wherein each table indicates a corresponding quantization parameter for said average of variances, wherein said using includes performing a lookup of said plurality of tables.