A method for version identification in video code stream

A version identification and code stream technology, applied in the field of video coding, can solve problems such as inconsistency in version concepts, inability to directly confirm the code stream format, etc.

Active Publication Date: 2019-05-03
VIMICRO ELECTRONICS CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

One is that the external software protocol is responsible for identifying different standards and media, and its disadvantage is that the code stream format cannot be directly confirmed; the other is to define different levels within the standard, but it is only for the classification of coding tools, which is obviously different from the version The concept is not consistent

Method used

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  • A method for version identification in video code stream
  • A method for version identification in video code stream
  • A method for version identification in video code stream

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0018] In the SAVC standard, a code stream usually consists of two parts: Header followed by rbsp (rawbyte sequence payload, raw byte sequence payload), where rbsp describes in detail the details of the corresponding type indicated by nal_unit_type in Header information. Table 1 shows the definition of Header.

[0019] Table 1: The definition of Header.

[0020]

[0021] Wherein, nal_unit_type is a fixed-length 4-bit value, and its specific definition is shown in Table 2.

[0022] Table 2: Schematic illustration of the definition of nal_unit_type.

[0023]

[0024]

[0025] When nal_unit_type is a different value, it is followed by a different rbsp. For example, when nal_unit_type is 0011, the following rbsp...

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Abstract

The invention discloses a method for identifying the version of a video code stream in order to acquire the version of a video compressed code stream rapidly and accurately for subsequent analysis. The method comprises adding a version-indicating identifier to a code stream or a code stream header.

Description

technical field [0001] The invention relates to video coding technology, in particular to a method for version identification in video code stream. Background technique [0002] With the development of the svac 2nd generation standard, the problem of distinguishing the code stream from the svac 1st generation standard will be encountered in the application. There will also be different versions in the same SVAC standard, and there will be different engineering versions in practice. Therefore, the problem of how to effectively carry out version management is an urgent problem to be solved. [0003] There are currently two solutions. One is that the external software protocol is responsible for identifying different standards and media, and its disadvantage is that the code stream format cannot be directly confirmed; the other is to define different levels within the standard, but it is only for the classification of coding tools, which is obviously different from the versio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/84H04N21/45
CPCH04N21/4516H04N21/8402
Inventor 孙大瑞邱嵩卢京辉
Owner VIMICRO ELECTRONICS CORP
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