Patent ID: 8126054

Claim:
A quality scalable video encoding method for compressing a source video frame, comprising: generating a base quality layer bitstream by encoding the source video frame at a specified lowest quality level or encoding bitrate; generating a set of enhancement layer bitstreams by encoding the source video frame at a set of the increasing quality levels or encoding bitrates, the encoding including: decomposing the source video frame by subband analysis filter banks into a subband representation of the source video frame; forming an inter-layer prediction signal which is a representation of a recovered video frame of the next lower quality layer; and generating the enhancement layer bitstream by encoding the subband representation by an inter-layer frame texture encoder that further utilizes the inter-layer prediction signal to remove inter-layer redundancy; and composing a scalable bitstream from the base quality layer bitstream and the set of enhancement layer bitstreams using a bitstream multiplexer.