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Low-delay buffering model in video coding

  • US 9,374,585 B2
  • Filed: 09/25/2013
  • Issued: 06/21/2016
  • Est. Priority Date: 12/19/2012
  • Status: Active Grant
First Claim
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1. A method of decoding video, the method comprising:

  • receiving a first decoded picture buffer (DPB) output delay and a second DPB output delay;

    determining whether a hypothetical reference decoder (HRD) operates at an access unit level or operates at a sub-picture level; and

    based on a determination that the HRD operates at the access unit level, determining, by a video decoding device, for a decoded picture, a first DPB output time based on the first DPB output delay and a picture clock tick, orbased on a determination that the HRD operates at the sub-picture level;

    deriving a sub-picture clock tick based on the picture clock tick and a tick divisor value; and

    determining, by the video decoding device, for the decoded picture, a second DPB output time based on the second DPB output delay and the sub-picture clock tick.

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