All things related to multicast

["Zhu Nan" <>]

Dear Prof,

    I am interested in the Streaming Fountain. Can you give me some more 
detailed description to the tech it used? You said it's based on the pyramid 
scheme. Then how did it solve the start-up latency of pyramid scheme ? By 
using client-side buffering the first segment?

    Another question is, when many videos are put to the server, how the 
server allocate the bandwidth between them, what policy is used? Most visited 
video get more bandwidth?

    Can I have the product as an implement of the pyramid or skyscraper idea?

    Thanks!

--
Zhu Nan
---------------------------------------------------
Network Research Center of Tsinghua University
China Education and Research Network(CERNET) Center
Tel:    86-10-62771999 EXT 629
Fax:    86-10-62783702
Email:  

----------------------------------------------------


  


----- Original Message ----- 
From: Michael Luby 
To: Marshall Eubanks ; Zhu Nan 
Cc: 

 ; Greg Shepherd 
Sent: Thursday, April 25, 2002 4:40 AM
Subject: RE: Any periodic broadcasting in practice now on Internet?


Yes, we at Digital Fountain have a product that provides VOD using multicast 
(although it is not "cycling through", it is always creating unique encoding 
material about each section, but it is based on ideas that are related to the 
pyramid scheme).   See 
http://www.digitalfountain.com/products/streamingFountain.htm for details on 
this specific product (and http://www.digitalfountain.com/products/index.htm 
for the full family of products, all of which can deliver using multicast 
transport).  And yes, I believe that Greg is at least sometimes sourcing 
streaming VOD content using multicast using our Streaming box.
Mike Luby


-----Original Message-----
From: 

 
[mailto:]On
 Behalf Of Marshall Eubanks
Sent: Wednesday, April 24, 2002 1:18 PM
To: Zhu Nan
Cc: 
;
 Greg Shepherd
Subject: Re: Any periodic broadcasting in practice now on Internet?


Dear Zhu;

   We have continual broadcasting of audio and video multicasts on the
Internet. Is that what you mean by
periodic ? Or do you mean a cyclic multicast of a loop to emulate video
on demand ? Digital Fountain has such a product, and Greg Shepard was
running a test of it from Oregon. I am not sure if it is up, but I am
sure he can tell you about it.

Test your network for multicast :
http://www.multicasttech.com/mt/

Our streams :
Audio - On-the-I.com
MPEG-4 video  - www.multicasttech.com/otv

Digital Fountain :
http://www.digitalfountain.com/

Greg is cc'ed above.


--
                                 Regards
                                 Marshall Eubanks


Zhu Nan wrote:

>     Hi all, are there any periodic broadcasting service on the Internet 
> ,and it can provide Near-VOD video service in practice ?  Can you give me 
> some examples ? or just prototype is also OK.
>
>     I know to deploy periodic broadcasting in a local network is easy. but 
> how about running on a wider network such as Internet, across AS? the same 
> easy?
>
>     There are some periodic broadcast schemes such as Pyramid, Skyscraper 
> and GDB... with fully analysis and discuss. But are there any such system 
> in practice?
>
>     I know there are lots broadcasting system in real time works, but I 
> hear no periodic broadcasting example with Near-VOD service. Tell me some.  
> Thank you.
>
>
>
>
>




T.M. Eubanks
Multicast Technologies, Inc
10301 Democracy Lane, Suite 410
Fairfax, Virginia 22030
Phone : 703-293-9624       Fax     : 703-293-9609
e-mail : 

http://www.multicasttech.com

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