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Inter-layer prediction for scalable video coding and decoding

An encoding and video technology, applied in the field of video encoding and decoding devices, can solve problems such as inability to decode RASL pictures, picture rate glitches, etc.

Active Publication Date: 2017-12-01
NOKIA TECHNOLOGLES OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, if open GOPs are used at segment boundaries in DASH, representation switching may result in not being able to decode RASL pictures and thus cause picture rate glitches in playback

Method used

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  • Inter-layer prediction for scalable video coding and decoding
  • Inter-layer prediction for scalable video coding and decoding
  • Inter-layer prediction for scalable video coding and decoding

Examples

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no. 1 example

[0599] The method according to the first embodiment comprises:

[0600] decoding a first portion of the first encoded video representation;

[0601] receiving and parsing information related to decoding the second encoded video representation,

[0602] Where the encoded second representation differs from the first encoded video representation in one or more of: chroma format, sample bit depth, color gamut, spatial resolution, and the information indicates that the second encoded whether the video representation of can be decoded using the processed decoded picture of the first coded video representation as a reference picture that can be used for prediction;

[0603] If the information indicates that the second encoded video representation can be decoded using the processed decoded picture of the first encoded video representation as a reference for prediction, the method further comprises:

[0604] processing the one or more decoded pictures of the first portion ...

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Abstract

There is provided methods, apparatuses and computer program products for video coding and decoding. A first part of a first coded video representation is decoded, and information on decoding a second coded video representation is received and parsed. The coded second representation differs from the first coded video representation in chroma format, sample bit depth, color gamut and / or spatial resolution, and the information indicates if the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as reference pictures. If the information indicates that the second coded video representation may be decoded using processed decoded pictures of the first coded video representation as a prediction reference, decoded picture(s) of the first part is / are processed into processed decoded picture(s) by resampling and / or sample value scaling; and decoding a second part of a second video representation using said processed decoded picture(s) as reference pictures.

Description

technical field [0001] The present invention relates to an apparatus, method and computer program for video encoding and decoding. Background technique [0002] This section is intended to provide a background or context to the invention recited in the claims. The descriptions herein may include concepts that may be sought, but not necessarily concepts that have been previously conceived or sought. Therefore, unless otherwise indicated herein, what is described in this section is not prior art to the description and claims in this application and is not admitted to be prior art by inclusion in this section. [0003] Scalable video coding refers to a coding structure in which a bitstream can contain multiple representations of content at different bitrates, resolutions or frame rates. In these cases, the receiver can extract the desired representation depending on its characteristics. Alternatively, a server or network element may extract parts of the bitstream to be trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/30H04N19/105H04N19/187H04N19/70
CPCH04N19/105H04N19/172H04N19/136H04N19/70H04N19/46H04N19/33
Inventor M·M·安尼克塞拉
Owner NOKIA TECHNOLOGLES OY
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