BS PD IEC TS 62312-2:2018 gives guidelines for methods of synchronization of audio and video.Cross References:IEC 60958-1SMPTE 12MIEC 61883-6IEC 60958-3:2006IEC 60958-3:2006/AMD2:2015ST 2064-2:2015ST 2064-1:2015IEEE 1394:1995All current amendments available at time of purchase are included with the purchase of this document.