IEC TS 62312-2:20 18 RLV包含IEC官方国际标准及其红线版本。Redline版本不是官方文档，它只有英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC TS 62312-2:20 18给出了音频和视频同步方法的指南。描述了音视频同步的系统模型和一般方法。这些方法排除了信号源的同步和音频再现的空间延迟。IEC TS 62312-2:20 18取消并取代2007年发布的第一版。本版构成技术修订版。与上一版相比，此版本包括以下重大技术变更:a)指纹是新引入的； b)添加来自指纹(SMPTE规范)的同步信息； c)添加使用上述信息的方法。

IEC TS 62312-2:2018 RLV contains both the official IEC International Standard and its Redline version. The Redline version is not an official document, it is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition.

IEC TS 62312-2:2018 gives guidelines for methods of synchronization of audio and video. It describes the system model and general methods for the synchronization of audio and video. The methods exclude the synchronization of the signal source and the spatial delay of audio reproduction. IEC TS 62312-2:2018 cancels and replaces the first edition published in 2007. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) fingerprint is newly introduced;
b) addition of the synchronization information from fingerprint (SMPTE spec.);
c) addition of the method for using the above information.