Arris Enterprises LLC

General Instrument Corporation

Arris International IP Ltd

Rebecca Lam

Siu-Wai Wu

Vincent C Liu

Michael A Casteloes

Jing Yang Chen

Robert S Nemiroff

Vincent Hok Liu

Robert Stone

Hanson On

Kyle A Woodward

Robert J Stone

A statistical multiplexer that distributes the total bandwidth of a multiplexed signal among constituent multiplexed signals. Each multiplexed signal may have an associated priority weight and a complexity. In some embodiments, differences between the priority weights are dampened. In some embodiments the priority weights are used to reallocate complexity among the multiplexed signals.

Statistical multiplexer with service priority weighting

Techniques for synchronizing streams in an adaptive streaming environment include cross-chassis and intra-chassis synchronization of video and/or audio. In an adaptive streaming system that streams content in segments or chunks at varying levels of quality corresponding to different coding rates, implementations enable seamless switching between transcoded audio output streams. The streams synchronized may be those that have been ingested by the transcoder in a compressed format and transcoded into a different compressed format, as part of the transcoding process. The transcoded audio output streams may be synchronized such that audio frame boundaries contain identical pulse-code modulation (PCM) samples, packetized elementary stream (PES) location, and presentation time stamp (PTS) value.

Adaptive streaming transcoder synchronization

A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined for each encoder in a stat mux group, and an encoding bit rate is allocated to each channel based on its need parameter. A transmission bit rate is allocated to each channel as a time-lagged version of its need parameter to minimize a rate mismatch between the output and the input of a decoder buffer. A packet processor checks for impending decoder buffer overflow or underflow events to set minimum and maximum limits on the transmission bit rate. Moreover, these limits are set based on whether a new transmission bit rate can be implemented before the decoding time stamp (DTS) of the current or next frame.

Method and apparatus for determining a transmission bit rate in a statistical multiplexer

A statistical multiplexer for coding and multiplexing multiple channels of digital television data, or multiple panels of HDTV digital television data. A bit rate need parameter is determined for each encoder in a stat mux group by scaling the complexities of previous pictures of the same and different picture types. Scaling factors based on an activity level, motion estimation score, and number of pictures of a certain type in a GOP, may be used. Moreover, the scaling factors may be bounded based on a linear or non-linear operator to prevent large variations in the factors. An encoding bit rate is allocated to each channel based on its need parameter.

Method and apparatus for determining a bit rate need parameter in a statistical multiplexer

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Rebecca Lam