Bandwidth-efficient layered video coding

A method, comprising:

• receiving a first frame of a set of frames;
• decomposing the first frame into a plurality of sub-bands, wherein the plurality of sub-bands comprises a base layer and an enhancement layer;
• encoding the base layer at a base layer target bitrate based on a target bitrate so as to produce an encoded base layer;
• encoding the enhancement layer so as to produce an encoded enhancement layer;
• comparing a sum of the encoded base layer and the encoded enhancement layer to a ratio of a target bitrate to a framerate of the set of frames;
• in response to the sum being greater than the ratio, truncating the encoded enhancement layer;
• and
• combining the encoded base layer with the truncated encoded enhancement layer so as to produce an encoded first frame.

A system comprising:

• one or more processors;
• and
• a memory coupled to the one or more processors and storing executable instructions configured to manipulate the one or more processors to perform a method comprising
• decomposing a first frame into a base layer of the first frame and an enhancement layer of the first frame;
• encoding the base layer at a target base layer bitrate based on a target bitrate to produce an encoded base layer;
• generating a progressive stream from the enhancement layer;
• truncating the progressive stream based on the target bitrate produce a truncated progressive stream;
• and
• combining the encoded base layer with the truncated progressive stream to produce an encoded first frame.