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Mixed nal unit picture constraints in video coding

An image and unit type technology, applied in the field of video decoding, can solve the problem of one video size

Active Publication Date: 2022-02-18
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The size of the video may also be an issue when storing the video on a storage device due to possible limited memory resources

Method used

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  • Mixed nal unit picture constraints in video coding
  • Mixed nal unit picture constraints in video coding
  • Mixed nal unit picture constraints in video coding

Examples

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Embodiment Construction

[0048]It should be understood at the outset that although illustrative implementations of one or more embodiments are provided below, the disclosed systems and / or methods may be implemented using any number of techniques, whether currently known or in existence. The invention should in no way be limited to the illustrative implementations, drawings, and techniques illustrated below, including the exemplary designs and implementations illustrated and described herein, but rather be within the scope of the appended claims and their equivalents Modified within the full range of .

[0049] The following terms are defined below unless used in a context to the contrary herein. Specifically, the following definitions are for describing the present invention more clearly. However, terms may be described differently in different contexts. Accordingly, the following definitions should be considered as supplementary information and should not be viewed as limiting any other definitions...

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Abstract

A video coding mechanism is disclosed. The mechanism includes receiving a bitstream comprising a current picture including a plurality of video coding layer (VCL) network abstraction layer (NAL) units that do not have a same NAL unit type. Active entries of reference picture lists are obtained for slices positioned in a sub-picture A (subpicA) in subsequent pictures following the current picture in decoding order. The active entries do not refer to any reference picture preceding the current picture in decoding order when the subpicA at the current picture is associated with an intra-random access point (IRAP) NAL unit type. The subsequent pictures are decoded based on the reference picture list active entries. The subsequent pictures are forwarded for display as part of a decoded video sequence.

Description

[0001] Related Application Cross Reference [0002] This patent application requires the application number 62 / 871,524 submitted by Wang Yekui on July 8, 2019, and the title of the invention is "Constraints for Mixed NAL Unit Types within One Picture in Video Decoding (Constraints for Mixed NAL Unit Types within One Picture in Video Coding), the contents of which are incorporated herein by reference. technical field [0003] The present invention relates generally to video coding, and in particular to coding sub-pictures in a picture in video coding. Background technique [0004] Even relatively short videos require large amounts of video data to describe, which can create difficulties when the data is to be streamed or otherwise transmitted across communication networks with limited bandwidth capacity. Therefore, video data is usually compressed before being transmitted over modern telecommunications networks. Since memory resources may be limited, the size of the video m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/12H04N19/70
CPCH04N19/70H04N19/172H04N19/107H04N19/105H04N19/188H04N19/42H04N19/119H04N19/174H04N19/159H04N19/58H04N19/117
Inventor 王业奎弗努·亨德里
Owner HUAWEI TECH CO LTD
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