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Variable bit video streams for adaptive streaming

  • US 9,930,385 B2
  • Filed: 03/26/2015
  • Issued: 03/27/2018
  • Est. Priority Date: 12/06/2010
  • Status: Active Grant
First Claim
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1. A method, comprising:

  • computing a first estimated bandwidth available for downloading digital content from one or more content servers during a first time window and a second estimated available bandwidth available for downloading the digital content from the one or more content servers during a second time window based on actual bandwidths that were available for downloading the digital content from the one or more content servers during one or more previous time windows;

    computing a bandwidth variability based on the actual bandwidths available during the one or more previous time windows and estimated bandwidths computed for the one or more previous time windows;

    determining from a scene complexity map a first complexity level for the digital content within the first time window and a second complexity level for the digital content within the second time window; and

    selecting a first encoded portion of the digital content to download for playback during the first time window from a first content stream included in a plurality of encoded content streams,wherein each encoded content stream comprises the digital content encoded at a different bit rate, and the first content stream is encoded at a first bit rate, andwherein the first encoded portion is selected based on the first estimated bandwidth available during the first time window, the second estimated bandwidth available during the second time window, the bandwidth variability, and a desired bit rate at which a second encoded portion of the digital content to be downloaded subsequent to the first encoded portion is encoded.

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