Emerging 8K services and their applications towards Shuichi Aoki
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1 Emerging 8K services and their applications towards 2020 Shuichi Aoki Science and Technology Research Laboratories, NHK ITU-T 2 nd mini-workshop on Immersive Live Experience January 19 th 2017, Geneva
2 Status of 4K 8K delivery in Japan For B to C broadcast Test services via satellite launched in 2016 (with a limited number of receivers and monitors) Commercial services via satellite will launch in 2018 (with widely available TV sets) Terrestrial system is under study For B to C broadband Retransmission of satellite broadcast and hybrid services are under study For B to B delivery Technical specifications for public viewing and 4K 8K theaters are under study Towards 2020 Tokyo Olympic & Paralympic Games, opportunities for enjoying 4K 8K will dramatically increase 2
3 3 Everyone enjoys 4K 8K content all over Japan Receivers and monitors for test broadcast services
4 8K, more than resolution 8K offers even stronger sense of presence and realness to viewers High dynamic range Wide color gamut & 10-bit depth 8K 60/P, 120/P 4
5 Delivery aspect of 8K broadcasting system Enables hybrid services, in which broadband are used together with broadcast to deliver content Uses IP-based media transport for hybrid services MPEG Media Transport (MMT): for media synchronization IP: for common interface between broadcast and broadband TLV multiplexing scheme: for efficient transport of IP packets 4K 8K video HEVC 22.2 Audio AAC, ALS Closed caption TTML MMT IP TLV multiplexing scheme ISDB-S3 channel coding & modulation *TLV: Type Length Value *TTML: Timed Text Markup Language 5
6 Related ITU-R Recommendations/Reports Rec. ITU-R BT.2020 Rec. ITU-R BT.2100 Rec. ITU-R BS.2051 Rep. ITU-R BT.2342 Rec. ITU-R BT.1869 Video HEVC Audio AAC, ALS MMT TLV multiplexing scheme Rec. ITU-R BT.2020, Parameter values for ultra-high definition television systems for production and international programme exchange Rec. ITU-R BT.2100, Image parameter values for high dynamic range television for use in production and international programme exchange Rec. ITU-R BS.2051, Advanced sound system for programme production IP Closed caption TTML ISDB-S3 channel coding & modulation Rec. ITU-R BT.2074 Rec. ITU-R BO.2098 Rep. ITU-R BT.2342, Production, emission and exchange of closed captions for all worldwide language character sets (latin and non-latin) Rec. ITU-R BT.2074, Service configuration, media transport protocol, and signalling information for MMT-based broadcasting systems Rec. ITU-R BT.1869, Multiplexing scheme for variable-length packets in digital multimedia broadcasting systems Rec. ITU-R BO.2098, Transmission system for UHDTV satellite broadcasting 6
7 Benefits of MMT for broadcast and hybrid services Low-latency encapsulation Supports real-time streaming and file-based streaming Encoder MFU Delivery Encoder MFU Delivery MPU Synchronization of audio & video from different channels UTC-based presentation timestamp Identifying media components with IP address Combination and switching of media components Self-decodable structure for audio & video signals Video component #1 Video component #2 Presentation t=0 t=1 t=2 t=k t=k+1 *MFU: Media Fragment Unit *MPU: Media Processing Unit 7
8 8 Technical elements on use cases Use case Media transport Technical elements Error resiliency Session management Broadcast (fixed reception) Multicast Not required IGMPv4, MLDv2 Broadband (retransmission, hybrid services) Multicast Rec. ITU-R BT.2074 AL-FEC IGMPv4, MLDv2 Broadband (hybrid services) Unicast (unidirection) AL-FEC RTSP Broadband (VoD, hybrid services) Unicast (bidirection) ISO/IEC TCP HTTP
9 Demo #1: 11-channel 8K delivery over broadband Used 10G-EPON as broadband 10 G broadband available in limited areas Transmit 11 programmes on broadband and 1 programme on broadcast Approx. 11x120 Mbps including AL-FEC for broadband and 100 Mbps for broadcast Broadcast modulator BS-IF Broadcast demodulator MMT transmitter 1x100 Mbps MMT/IP 11x120 Mbps = 1.3 Gbps 10 G broadband MMT/IP MMT receiver 9
10 10 Channel change between broadcast and broadband Transmitter Receiver One programme for broadcast Selected one 8K programme is presented and Eleven programmes for broadband (with AL-FEC)
11 11 Demo #2: hybrid delivery over commercial broadband Everyone can use this broadband about 40 US$ per month Picture in picture and tablet device for presentation Synchronized presentation between programmes Broadcast modulator BS-IF Broadcast demodulator MMT transmitter Main programme MMT receiver Additional-views programmes Commercial broadband MMT/IP Tablet
12 12 Synchronization of two videos from different paths Additional video (MMT/UDP over broadband) Programme over broadcast Additional video (MMT/UDP over broadband) Additional video (MMT/HTTP over broadband)
13 For B to B delivery Next Generation Contents Distribution Forum (NexCDi-F) was established in 2016 Members include content creators, broadcasters, manufactures, teleco companies, and so on Developing technical specifications for delivering next-gen content including 4K 8K Promoting facilities having large screen for next-gen content Various content Platform for 4K 8K, 3D video and audio Applications Public viewing Theaters Shopping centers Public facilities Museums Schools Hospitals 13
14 14 Plan of NexCDi-F towards 2020 Services will start at limited areas in 2017 Environments for business will be prepared in 2018 Services will start until Rugby World Cup in 2019 Services will spread all over Japan in 2020
15 Conclusions Overview of 4K 8K satellite broadcasting system MMT as media transport protocol Related ITU-R Recommendations Demos on hybrid services 11-channel 8K content delivery over broadband Synchronization of multi-view videos B to B delivery is also being studied by NexCDi-F for public viewing and theaters It is expected that 4K 8K will be widely enjoyed in 2020 The Tokyo Olympic & Paralympic Games in 2020 will be delivered out to viewers through various channels 15
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