International real-time streaming of 4K digital cinema

Takashi Shimizu, Daisuke Shirai, Hirokazu Takahashi, Takahiro Murooka, Kazuaki Obana, Yoshihide Tonomura, Takeru Inoue, Takahiro Yamaguchi, Tetsuro Fujii, Naohisa Ohta, Sadayasu Ono, Tomonori Aoyama, Laurin Herr, Natalie van Osdol, Xi Wang, Maxine D. Brown, Thomas A. DeFanti, Rollin Feld, Jacob Balser, Steve MorrisTrevor Henthorn, Greg Dawe, Peter Otto, Larry Smarr

Research output: Contribution to journalArticlepeer-review

49 Citations (Scopus)


This paper describes the world's first real-time, international transmission of 4K digital cinema and 4K Super High Definition (SHD) digital video at iGrid 2005, hosted at the California Institute of Telecommunications and Information Technology (Calit2) at the University of California, San Diego. Nearly six hours of live and pre-recorded 4K motion picture and audio content was streamed to iGrid in San Diego from the Research Institute for Digital Media and Content (DMC) at Keio University in Tokyo. To implement this demonstration, several new technologies were introduced, including a prototype high-performance 4K compressed multicasting system called "JPEG 2000 Flexcast", and "Soundscape", a practical scheme for synchronizing audio and video transmitted from different locations over IP networks. These iGrid 2005 demonstrations proved that it is now feasible to implement networked professional audio/video applications-production, post-production and distribution-even at 4K quality over IP networks up to 15,000 km long. The demonstrations also showed the new 4K motion picture technology being introduced for digital cinema can be usefully applied to other network applications such as remote telepresence, distance learning and scientific visualization.

Original languageEnglish
Pages (from-to)929-939
Number of pages11
JournalFuture Generation Computer Systems
Issue number8
Publication statusPublished - 2006 Oct
Externally publishedYes


  • 4K SHD
  • Flexcast
  • JPEG 2000
  • Soundscape

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications


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