Timing and Synchronization in the Professional Broadcast TV Industry
Tuesday | 5:15 - 5:35 pm
- Leigh Whitcomb - Architect, Imagine Communications
The broadcast TV industry has had timing and synchronization since the beginning of TV. Until recently, synchronization required three separate signals, analog black, timecode and DARS to achieve the 100ps video synchronization, frame labelling and audio requirements. As the TV broadcast industry moves to IP for the transport of video and audio essence (ST 2110), we are also moving our timing and synchronization infrastructure to IP. The Society of Motion Picture Television Engineers (SMPTE) has defined a profile (ST 2059-2) for IEEE 1588. This presentation discusses the timing and synchronization requirements of the broadcast TV industry. The key elements of the SMPTE ST 2059-2 profile including SMPTE TLV management message and generating synchronization signals from time (ST 2059-1) are explored. Lastly, an overview of SMPTE’s current PTP work including PTP over redundant ST 2022-7 networks, PTP security for broadcast applications and interop workshops will be presented.