Patent ID: 8160130
Filing Date: 2012-04-17
Classification: H04N

Abstract:
1. A system for predictively encoding digital video sequences, comprising: a dynamic resolution switch controller means for dynamically selecting the resolution of the current frame being encoded, the selection being based on the statistical and coding information of a plurality of frames; and, a coder means for selecting encoding parameters and encoding the current frame at a chosen resolution, the coder means taking into account the output of the dynamic resolution switch controller means in determining the encoding parameters, wherein the dynamic resolution switch controller means further utilizes at least one previous frame and the current frame, the statistical information including scene-change information and estimated motion information, and the coding information including a measure of the quantization used by the frames and a measure of the availability of bits, where Q is a measure of the quantization scales used to encode a plurality of previous frames, M is a measure of the motion present in a plurality of previous frames and the current frame, B dec is a measure of the decoder buffer fullness, F curr and F sc are the frame numbers of the current frame and the last scene-change frame respectively and T QM , T B2 and T SC are preset thresholds.