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Quality-aware adaptive streaming over hypertext transfer protocol using quality attributes in manifest file

  • US 9,125,073 B2
  • Filed: 12/11/2012
  • Issued: 09/01/2015
  • Est. Priority Date: 08/03/2012
  • Status: Active Grant
First Claim
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1. A network device to support quality-aware adaptive media streaming over a network, the network device comprising:

  • a transceiver to receive a manifest file that defines hierarchical levels including an adaptation set level encompassing one or more other levels including a representation level and a segment level, the hierarchical levels including information characterizing encoded portions of media content available for adaptive streaming; and

    circuitry configured to;

    obtain from a minimum and maximum quality attribute parsed from the adaptation set level of the manifest file, first quality information that specifies respective minimum and maximum video quality values of the encoded portions of the media content;

    obtain from a quality attribute parsed from the one or more other levels of the manifest file, second quality information that specifies quality values associated with the encoded portions of the media content;

    obtain from a bandwidth attribute parsed from the segment level of the manifest file, bandwidth information that specifies segment or sub-segment bitrate values associated with the encoded portions of the media content; and

    dynamically switch streaming between different encoded portions of the media content based on the bandwidth information and on the first and second quality information of a selected stream to maintain a desired video quality value.

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