Post-Deployment Considerations – You Don’t Have to Throw Your SDI Baby Away With the Bathwater.

Presenters : Kevin Salvidge - Leader

Year : 2022

dlp_document_download : Kevin Salvidge – Leader Europe Limited You don’t have to throw your SDI baby away with the bathwater. End-user case studies on deployments of all sizes, as well as post-deployment considerations You don’t have to ………. Disclaimer The following presentations features real life events. No customer have been named, to prevent any potential embracement. style.visibility style.visibility style.visibility You don’t have to ………. Reference Source Unlike BB/TLS in the SDI world, PTP comes with a number parameters, that if incorrect configured, can result in unexpected an unpleasant affects to your IP operations. style.visibility style.visibility BMCA （ Best Master Clock Algorithm ） Who is Grandmaster? When devices powered on PTP Devices Listen Gather announce message Use BMCA to determine Grandmaster A key to the resiliency of the PTP is the BMCA. The BMCA allows a Leader to automatically become the Grandmaster or take over the duties of Grandmaster when the previous Grandmaster loses its GPS, gets disconnected due to a switch fault, or for what ever reason is unable to continue as Grandmaster. Listening Leader Leader Power up, restart Best Master Clock Algorithm Announce Announce BMCA Grandmaster 2110 Network PTP-GM A Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 1 PTP-GM B Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 2 GPS Satellite Priority2: 1 style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility ppt_x ppt_y style.visibility style.visibility style.visibility style.visibility ppt_x ppt_y style.visibility style.visibility style.visibility style.visibility ppt_x ppt_y style.visibility style.visibility style.visibility style.visibility ppt_x ppt_y style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility PTP １ PTP ２ DOMAIN 127 DOMAIN 0 ST 2059 PROFILE AES67 PROFILE System configuration with Domain divided Some audio equipment only supports the profile of AES 67 Video equipment Audio equipment Domains are for use of multiple PTP services simultaneously with one physical Ethernet connection. PTP operation is performed between devices having the same DOMAIN. Domain 0 is used by Audio services for audio reference. Domain 127 is the default for PTP, so any new equipment that is added to the network could be a Grandmaster via BMCA on Domain 127, so it is possible to have the new equipment take over without you knowing it. DOMAIN 44 PTP Domains style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility ppt_w ppt_h Leader Best Master Clock Algorithm 2110 Network PTP-GM A Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 1 PTP-GM B Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 2 Grandmaster BMCA GPS Satellite If the Leader does not see an Announce message from a better clock within the Announce Time Out Interval, then it takes over the role of Grandmaster. style.visibility Leader Best Master Clock Algorithm 2110 Network PTP-GM A Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 1 PTP-GM B Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 2 Grandmaster BMCA GPS Satellite This runs continuously so Leader capable devices are constantly on the look out for the possible loss of the current Grandmaster. Leader Best Master Clock Algorithm 2110 Network PTP-GM A Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 1 PTP-GM B Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 2 Grandmaster BMCA GPS Satellite For this reason, y ou want the network detection timeout to be longer that the Time out interval of the BMCA  (Grandmaster / Leader) Leader Best Master Clock Algorithm 2110 Network PTP-GM A Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 1 PTP-GM B Domain: 44 Priority1: 1 ClockClass : 6 Priority2: 2 Grandmaster BMCA GPS Satellite If you don’t, then the Leader capable devices will keep jumping to the conclusion that the Grandmaster has gone away and they need to take over. Announce Grandmaster Leader style.visibility style.visibility ppt_x ppt_y style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility Spine Leaf . In an Air Gap Network the only connection between networks is the PTP communication between the two Grandmaster and the Leader Each South bound Leaf Port is a Boundary Clock BC BC BC BC BC BC Each Leaf connects to every Spine in it own network PTP Only Interconnect VLAN Need more Nodes add more Leafs Need more Bandwidth add more Spines NOTE: For Spine / Leaf network architectures the Leaf ports connected to PTP follower endpoints should always stay in Master state.   Configure this CLI to ensure they will always stay as masters, even if the Follower is misconfigured or a GM is accidently connected under this port. Larger 2110 Leaf and Spine Ensure the BMCA elections take place at the feeder switch level not lower down the media network style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility Best Master Clock Algorithm style.visibility Backup SPG Primary SPG ECO Analog BB Analog BB Analog Tri-Level Sync Analog Tri-Level Sync SD/HD SDI Black SD/HD SDI Black Digital Audio AES/EBU Reference Digital Audio AES/EBU Reference To Distribution Amplifiers Sync Pulse Generators (SPG’s) ECO Analog BB Analog BB Analog Tri-Level Sync Analog Tri-Level Sync SD/HD SDI Black SD/HD SDI Black Digital Audio AES/EBU Reference Digital Audio AES/EBU Reference To Distribution Amplifiers PTP – SMPE ST 2059 / AES67 / General To Network Switch PTP – SMPE ST 2059 / AES67 / General To Network Switch Backup SPG Primary SPG Sync Pulse Generators (SPG’s) + PTP GrandMaster style.visibility ECO Analog BB Analog BB Analog Tri-Level Sync Analog Tri-Level Sync SD/HD SDI Black SD/HD SDI Black Digital Audio AES/EBU Reference Digital Audio AES/EBU Reference To Distribution Amplifiers PTP – SMPE ST 2059 / AES67 / General To Network Switch PTP – SMPE ST 2059 / AES67 / General To Network Switch Backup SPG Primary SPG Sync Pulse Generators (SPG’s) + PTP GrandMaster GrandMaster X style.visibility style.visibility style.visibility style.visibility LT4610 Primary LT4610 Primary GPS GPS LT4610 Secondary PTP trunk BB RJ45 or SFP+ LT4448 Change Over BB BC LV5600 RJ45 or SFP+ Primary Network Secondary Network BB BC SNMP Controller For SNMP Get Primary LT4610 Status. (Lock status, Clockclass , etc.) Get Backup LT4610 Status. (Lock status, Clockclass , etc.) Set Change Over. Primary to Backup Sync Pulse Generators (SPG’s) + PTP ECO Analog BB Analog BB Analog Tri-Level Sync Analog Tri-Level Sync SD/HD SDI Black SD/HD SDI Black Digital Audio AES/EBU Reference Digital Audio AES/EBU Reference To Distribution Amplifiers PTP – SMPE ST 2059 / AES67 / General To Network Switch PTP – SMPE ST 2059 / AES67 / General To Network Switch Backup SPG Primary SPG Sync Pulse Generators (SPG’s) + PTP GrandMaster Analog Tri-Level Sync X Analog BB SD/HD SDI Black Digital Audio AES/EBU Reference GrandMaster Analog BB Analog Tri-Level Sync SD/HD SDI Black Digital Audio AES/EBU Reference Backup SPG Primary SPG style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility Ancillary Data Over the years, the SDI "Ancillary Data" system has become the home for lots of things. Some are intrinsic to the video signal Some are independent essences And some have ended up there because it seemed like a good place to put it at the time. You don’t have to ………. style.visibility style.visibility style.visibility style.visibility style.visibility You don’t have to ………. Video Payload ID (VPID) Codes SMPTE ST352 Is carried within the Ancillary data space to assist a device in quickly decoding the video signal. SMPTE ST2110-20 specifies the transport of uncompressed active video The Ancillary Data is managed as part of SMPT ST2110-40 style.visibility style.visibility style.visibility style.visibility style.visibility Video Payload ID And now for a new challenge ! To assist in the control and switching of IP multicast flows within a broadcast facilities broadcasters are using NMOS Orchestration systems to configure IP receivers. They configure receivers by means of Session Description Protocol (SDP). Session Description Protocol does not deliver any media streams itself but is used between endpoints for negotiating on network metrics, media types and other associated properties. You don’t have to ………. style.visibility style.visibility style.visibility style.visibility Session Description Protocol Video Audio ANC Data You don’t have to ………. -20 Video -30 Audio -40 ANC style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility Session Description Protocol You don’t have to ………. style.visibility style.visibility You don’t have to ………. Session Description Protocol Being able to analysis the SDP is vital if an error has occurred in its creation and receivers on the network are unable to connect or display the IP stream. The SDP can be copied and exported as a text tile for remote analysis. SDP - Video SDP - Audio SDP - ANC style.visibility style.visibility style.visibility style.visibility style.visibility You don’t have to ………. Session Description Protocol In ‘True Hybrid’ operation, the Leader can display both the SDI Payload ID and the SDP to allow easy comparisons. SDI Video Payload ID SDP Video Payload ID style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility You don’t have to ………. Session Description Protocol The same applies to ANC Data Analysis of -40 ANC Data stream and SDI embedded audio style.visibility style.visibility style.visibility You don’t have to ………. Day-to-Day Operations ‘True Hybrid’ operation allows you to ensure ancillary data like closed captions are present. Multiple analysis tools like PIC and WFM can be displayed in both IP and SDI. 608 Captions 608 Captions style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility You don’t have to ………. Day-to-Day Operations The same applies to Audio Analysis of -30 or -31 audio stream and SDI embedded audio. Surround Channels missing style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility ppt_w ppt_h style.visibility style.visibility You don’t have to ………. IP to SDI Gateways Test and Measurement products have always acted as gateways in broadcasters’ facilities. Now, with the introduction of IP, they are continuing to fulfil this role. style.visibility style.visibility style.visibility 4x 3G-SDI Output Professional Broadcast Monitor Link - 1 VPID Both the LV5600 and LV7600 can convert IP Streams to SDI video and insert VPID You don’t have to ………. style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility You don’t have to ………. Vision Engineer in an IP World It’s not uncommon for Vision Engineers to have to control multiple cameras and this involves rapidly switching between cameras sources. style.visibility style.visibility You don’t have to ………. Day-to-Day Operations Vision Engineers expect the same performance from IP test and measurement products, as they previously enjoyed with SDI. They also don’t care if the video source is IP or SDI, their job is to match the images, irrespective of underlying infrastructure. style.visibility style.visibility You don’t have to ………. Audio-to-Video Synchronization Also known as lip sync refers to the relative timing of audio (sound) and video (image) parts during playout. style.visibility style.visibility You don’t have to ………. Day-to-Day Operations It can be confirmed whether video, audio and ANC essences are synchronized with PTP by comparing the timing information of the PTP and the RTP timestamp. The transmitting side transmits the stream according to the time of the PTP and the receiving side reproduces in accordance with the time of PTP. style.visibility style.visibility PTP Master Vision Mixer Audio Mixer You don’t have to ………. PTP Master RTP Timestamp RTP Timestamp Propagation Delay Video Audio PTP style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility PTP Master Vision Mixer Audio Mixer You don’t have to ………. RTP Timestamp RTP Timestamp Propagation Delay Video Audio PTP HDR<>SDR UHD<>HD RTP Timestamp RTP Timestamp Propagation Delay ? PTP Master style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility style.visibility You don’t have to ………. Day-to-Day Operations Using an IP AV Delay test pattern allows broadcasters to accurately identify the AV Delay. The IP AV Delay Graph displays the Audio Lead/Lag for each individual audio channel. IP AV Delay Test Pattern Audio Bars IP AV Delay Graph style.visibility style.visibility style.visibility style.visibility style.visibility You don’t have to ………. AV Delay You don’t have to ………. PTP Timing Comparison PTP Master Vision Mixer Audio Mixer You don’t have to ………. Video Audio PTP HDR<>SDR UHD<>HD RTP Timestamp RTP Timestamp Propagation Delay PTP Master style.visibility style.visibility style.visibility You don’t have to ………. Building a foundation of shared knowledge and practical experience in the area of IP media networking Visit the Education Library at AIMSAlliance.org Let us know what training and learning opportunities you’d like to see in the field of IP Media Networking info@aimsalliance.org AIMS Education Working Group Kevin Salvidge Sales Engineering Manager Email : salvidge@leadereurope.com Tel : +44 7826 178 752 You don’t have to ………. If you would like more information including a copy of this presentation. You don’t have to ………. Any Questions?