GB/T 33665-2023Technical requirements and detecting method of audio and video for digital publication (English PDF)

1 Scope

This document specifies the basic technical requirements and media requirements for digital publication audio and video, and describes detection methods:

This document is suitable for the production and detection of audio and video of digital publications:

2 Normative reference documents

The contents of the following documents constitute essential provisions of this document through normative references in the text: Among them, the dated quotations

For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document:

GB/T 31493-2015 Technical requirements for digital audio and video analyzers

GB/T 33663-2017 Read-only publications CD and DVD routine testing parameters

SJ/T 11528-2015 General Specification for Information Technology Mobile Storage Cards

SJ/T 11655-2016 Information Technology Mobile Storage Mobile Hard Disk General Specification

ISO /IEC 30192:2021 Information technology Information exchange and storage Digital recording media 120mm single layer (25GB per disk)

3 Terms and definitions

The following terms and definitions apply to this document:

3:1 sampling frequency sampling frequency

The frequency or period at which the analog source signal is sampled:

[Source: GB/T 17191:3-1997,6:4]

3:2 pixel pixel; pictureelement; pel

In a display image, the smallest two-dimensional element that can be independently assigned attributes (such as color and intensity):

[Source: GB/T 5271:13-2008,13:08:03]

3:3 quantification

Grade the sample values:

[Source: GB/T 3947-1996,14:31]

3:4 sampling

The discrete values of a continuous variable obtained at equal or arbitrary time intervals:

WB/T 1120 | GB/T 36088 | DL/T 679 | GB/T 45257 | GB/T 45256 | […]