Harmonic Inc.
Statistical multiplexing using a plurality of encoders operating upon different sets of unique and shared digital content

Abstract:

Approaches for allocating bit rates to multiple digital video streams. Bit rates may be allocated to digital video streams by permitting any unit of digital video carried by the digital video streams to be a member of a set of digital content that is constrained by a sum of bit rates assigned to members of the set. To do so, a first set of bit rates to assign to each of the digital video streams is determined. Thereafter, a second set of bit rates to assign to each shared unit of digital video, which appears in two or more of the digital video streams, is determined. This may involve identifying the lowest bit rate assigned to each shared unit of digital video across the two or more bit rate pools. A remaining bit rate allotment is allocated to non-shared units of digital video within the digital video streams.