This Recommendation provides methods for synchronizing interconnected digital audio equipment, and to address synchronization of the audio sample clocks to video reference signals.
ITU-R BS.2032-2013 Referenced Document
ITU-R BS.647 A digital audio interface for broadcasting studios
ITU-R BT.1700 Characteristics of composite video signals for conventional analogue television systems Study Group 6
ITU-R BS.2032-2013 history
2013ITU-R BS.2032-2013 Synchronization of digital audio sample clock to video references