High-definition (HD) interactive video requires minimal transmission latency to be truly effective, which is afforded by today’s optical networks. While point-to-point “raw” HD video streams (i.e., streams with no latency due to encoding) have been successfully demonstrated, multicast HD is more demanding. One raw stream takes 1.5Gb so multi-site meetings can easily saturate 10Gb links. In addition, it is advantageous to do real-time translation of raw HD video into less demanding formats in order to allow sites without adequate bandwidth to participate.
A shared “virtual” lecture hall is created among the iGrid site in San Diego, Masaryk University and Louisiana State University. Each site has at least one HD camera; HD streams are multicast to the other sites at the highest bandwidth. Additional USA and European collaborators can receive/send digital video (DV) streams that are translated in real-time from/to raw HD. Synchronously, the lecture is also sent to a distributed storage system for archiving purposes.
URL:
http://sitola.fi.muni.cz/sitola/igrid
Contact:
Ludek Matyska, Masaryk University/CESNET, Czech Republic, ludek @ ics.muni.cz
Collaborators:
Masaryk University/CESNET, CZ:
Ludek Matyska, Petr Holub, Milos Liska, Lukas Hejtmanek, Jiri Denemark, Tomas Rebok
CESNET, CZ:
Stanislav Sima, Jan Radil, Jan Gruntorad
Louisiana State University, USA:
Ed Seidel, Andrei Hutanu, Ravu Paruchuri
