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Transcript

  • 1. HDV over IP in Korea 2004.1.28. Joonbok Lee [email_address] KAIST
  • 2. Contents
    • HDV
    • Standards for HDV over IP
    • HDV over IP Activities in Korea
      • HDVTS (KAIST)
      • VideoLAN for HDV (K-JIST)
      • HDTV Media Gateway System(ETRI)
      • Demonstration Plan
  • 3. HDV
    • HDV Fortmat :
      • High-Definition Digital Video Recording and Playback on a DV cassette tape http://www.hdv-info.org/
    • JVC GR-HD1 Camcorder
      • 720/30p (1280x720, 30fps)
      • MPEG-2 TS
        • Element Stream Type Video: MPEG2 (ISO/IEC 13818-2)
        • Audio: MPEG1 (ISO/IEC 11172-3)
      • About 20Mbps
      • Support IEEE1394 interface.
      • Encoding Delay: about 1 sec.
  • 4. Standards for HDV over IP
    • RFC 1889: RTP: A Transport Protocol for Real-Time Applications
    • RFC 2250: RTP Payload format for MPEG1/MPEG2 Video
      • RTP Payload contain integral number of MPEG transport packet (188byte).
      • Suggest several MPEG picture fragmentation rules.
      • RTP Header fields for MPEG2 Video
  • 5.
    • HDV over IP Activities in Korea
    • HDVTS (KAIST)
    • VideoLAN for HDV (K-JIST)
    • HDTV Media Gateway System (ETRI)
    • Demonstration Plan
  • 6. HDVTS
    • 1) System Diagram
  • 7.
    • 2) Specification
    • Platform: Microsoft Windows XP (based on DirectShow)
    • Protocol: RTP over IP (RFC 2250)
    • Supports Unicast, Multicast, IPv4, and IPv6.
    • MPEG2 Decoder:
      • Software Decoder (Elecard’s MPEG2 Decoder, libmpeg2)
      • Plan to support hardware decoder.
    • Sender: Pentium 1GHz. 256MB RAM
    • Receiver: Pentium 2GHz. 512MB RAM (for software decoder)
    • Prototype will be completed by Feb.
    • Both binary and source code will be opened to public.
  • 8.
    • 3) Software Modules
    • Implement as DirectShow Module.
    • Sender: Receive MPEG2-TS stream from JVC GR-HD1 using IEEE1394 interface, and then make RTP packet.
    • Receiver: Depacketize RTP packets, and then decode and show MPEG2-TS stream.
    IEEE1394 Interface RTP Packetizer RTP Depacketizer MPEG2 Decoder MPEG2-TS Demuxer Video Renderer Audio Renderer Sender Receiver Audio Decoder Traffic Shaper
    • Joonbok Lee <jblee@cosmos.kaist.ac.kr>
  • 9. VideoLAN for HDV
    • VideoLAN
      • http://www.videolan.org
      • Free Software and Open Source video streaming solution for every OS.
      • Mainly designed for high bandwidth application
      • VLS (Server) + VLC (Client)
      • Supoprt MPEG-1, MPEG-2, MPEG-4 and DivX.
      • Uses free software mpeg-2 decoder. (libmpeg2)
      • Supports IPv4, IPv6, Unicast, Multicast.
      • RTP: RFC 1889, RFC 2250
    • K-JIST modify VLS to support MPEG2 TS stream from IEEE1394.
    • Need to optimize IEEE1394 interface reading module.
    • Testing in Local Network.
    • Kiyoung Lee <kylee@netmedia.kjist.ac.kr>
  • 10. HDTV Media Gateway System
    • HDTV Media Gateway System for multiple platforms.
    • VOD, Live contents.
    • Add live stream facility using JVC HD camcorder.
    • Developing modules for JVC HD camcorder to embedded Linux.
    • YouHyeon Jeong <yhjeong@etri.re.kr>
  • 11. Demonstration Plan
    • 59 th IETF Meeting.
      • 2.29 ~ 3.5
      • Multicast HDV stream of some IETF Meeting sessions.
    • Buddha on the Net. (Prof. Dae Young Kim)
      • 5.26
      • Multicast HDV stream of Korean ceremony of Buddha’s birthday.
  • 12. Reference
    • HDV Format : http://www.hdv-info.org/
    • ANF HDTV Working Group: http://www.anf.ne.kr/~hdtv
    • SAL HDTV Project: http://cosmos.kaist.ac.kr/hdtv/
    • VideoLAN : http://www.videolan.org
    • Libmpeg2 free software mpeg2 decoder http://libmpeg2.sourceforge.net/
    • Elecard software mpeg2 decoder http://www.elecard.com/
    • RFC 1889: RTP: A Transport Protocol for Real-Time Applications
    • RFC 2250: RTP Payload format for MPEG1/MPEG2 Video