IEC TS 62312-1-1:20 18作为IEC TS 62312-1-1:20 18 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。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 is available as IEC TS 62312-1-1:2018 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the 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).

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