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METHOD FOR SEAMLESS UNICAST-BROADCAST SWITCHING DURING DASH-FORMATTED CONTENT STREAMING

  • US 20140095668A1
  • Filed: 06/27/2013
  • Published: 04/03/2014
  • Est. Priority Date: 09/28/2012
  • Status: Abandoned Application
First Claim
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1. A method for inserting stream access points (SAP) into a plurality of encoded representations of an input media data context, the method comprising:

  • providing the input media data context to an encoder;

    encoding said input media data context with said encoder to generate the plurality of encoded representations of the input media data context, wherein at least a portion of the input media data context is included in a first encoded representation of said plurality of encoded representations and the same portion is also included in a second encoded representation of said plurality of encoded representations, and said first encoded representation is encoded according to a different set of encoding parameters than is said second encoded representation;

    segmenting the encoded representations of the input media data context into selected segment sizes for wireless transmission to a User Equipment (UE) as streaming data using dynamic adaptive streaming over hyper-text transfer protocol (HTTP) (DASH); and

    inserting at least one stream access point (SAP) at a location in a segment of each encoded representation of the input media data context that enables the UE to switch between a unicast delivery of the streaming data and a multicast delivery of the streaming data at the SAP, wherein the location of the SAP is selected to enable the streaming data to be decoded at the UE after the switch using only information received after the SAP.

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