IEC TS 62312-1-1:20 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 62312-1-1:20 18给出了音频和视频同步方法的指南，并描述了音频和视频设备同步的一般测量方法。IEC TS 62312-1-1:20 18取消并取代2008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)新的附录B通知了音频延迟的一般测量和测试方法； b)SMPTE的评论（包括小的技术问题）。

IEC TS 62312-1-1:2018 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 62312-1-1:2018 gives guidelines for methods of synchronization of audio and video and describes general measurement methods for the synchronization of audio and video equipment. IEC TS 62312-1-1:2018 cancels and replaces the first edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
a) new Annex B informs of general measurement and test method of audio latency;
b) comments from SMPTE (including small technical issues).