[AG-TECH] Question about Codec

shudo at ni.aist.go.jp shudo at ni.aist.go.jp
Sun Aug 10 11:47:46 CDT 2003


Hi all,

From: Gurcharan.S.Khanna at Dartmouth.EDU (Gurcharan S. Khanna)

> i'd like to second what bob would like to do with DVTS. using DV is really
> great because there is no codec involved, no compression needs to take
> place. the DV stream is simply packetized and sent out and the receiving
> system just has to render the DV stream which doesn't seem to take
> much cpu power at all.

I second.

We have been having a plan to integrate the DVTS into AG for 2 or 3
years.  Unfortunately, the project could not have enough priority to be
worked on.

In case of AG 1.X, maybe naive integration can be achieved by
modifying slightly the VRM, the VV server, and probably the Event
Listener.  It is only required to invoke the DVTS instead of VIC.
We have not yet considered the integration to AG 2.X.

> now all we need is the multicast user interface and we have DV quality
> video and audio in an AG setting. of course, some will say that 30Mbps is
> too big a penalty to pay for this simplicity.

DVTS has capability to thin down video streams by sending one video
frame every several frames.  We can specify the number of frames in
which a frame is sent.  Bandwidth can be reduced much if a lower frame
rate is acceptable.

  Kazuyuki Shudo
  Grid Technology Research Center
  National Institute of Advanced Industrial Science and Technology (AIST)



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