All things related to multicast

[Alan Crosswell <>]

Hi Rich,

Burt Feldman's way ahead of you:-)

We are getting demo units here and at the University of Oklahoma
delivered on Tuesday.  The multicast I'll be doing will be of a live
two-way musical theater workshop being put on by the Manhattan School
of Music and the UO school of music.
(http://www.columbia.edu/acis/networks/advanced/broadway_local)

We plan on using vbricks for the two-way video.  We've both been using
Littons for a long time....

I've demoed the vbrick mpeg2 unit several times here both within our
campus network and with the University of Connecticut but, having
spent $20K on a Litton and having no money left, I've been holding off
on a purchase just yet!  Not to mention the fact that you MPEG2
competitors still haven't become interoperable with each other for
point-to-point conferencing which puts a real damper on me getting a
box that can't work with an Amnis, Minerva or Carrier Access box which
is what my peers have (along with Vbricks of course).

If and when you have a streampump that runs on a real, supportable server
operating system (Solaris, Linux) please let me know!

Thanks.

/a

>From: Richard Mavrogeanes 
><>
>To: "'Alan Crosswell '" 
><>,
>        
> "'
>  '"
>        
> <>
>Cc: Richard Mavrogeanes 
><>
>Subject: RE: yet another MPEG2 demo stream
>Date: Thu, 17 Jan 2002 23:31:34 -0500
>MIME-Version: 1.0
>X-Mailer: Internet Mail Service (5.5.2653.19)
>Content-Type: text/plain
>
>Alan,
>
>I don't think we've spoken yet (and I'll be in traveling for the next week
>or so), but I wanted to make you aware that VBrick is a I2 sponsor and I'd
>like to help.
>
>To trial MPEG-2 and MPEG-1 multicast, I can provide you with free
>registration of StreamPump (http://www.vbrick.com/StreamPump.asp) and some
>pretty good MPEG-2 and MPEG-1 royalty-free source files so you can send
>honest DVD-quality television over I2.
>
>You can view the television on H/W or S/W decoders which I can also supply
>at N/C for I2 members.
>
>The more interesting part is live television, and we can help out there too
>with loans of our VBricks, as we've done for several projects already (see
>http://www.vbrick.com/pressrelease/TransArt.html).  
>
>Since I won't be able to reply for about a week, you can get the free
>versions of the s/w products which only support MPEG-1 and limit the
>multicast to only a few minutes.  But send me a note and I'll give you the
>registration and you can send continuous television via multicast. And let
>me know when or if you want to go live and perhaps I can fix you up with
>some VBricks. 
>
>Best Regards,
>
>Rich Mavrogeanes
>President/Founder
>VBrick Systems, Inc.
>203-303-0200
>
>
>
>
>
> 
> 
>
>-----Original Message-----
>From: Alan Crosswell
>To: 
>
>Sent: 1/17/02 5:37 PM
>Subject: yet another MPEG2 demo stream
>
>Hello,
>
>I got tired of watching the Bridge Over the River Kwai trailer, so
>I've fired up an MPEG2 demo stream with IPTV server.  The source content
>is from a DV recording of a cello master class done last year.  This
>MPEG2
>is encoded at about 5 Mbps using exclusively linux/GNU tools including
>dvgrab to capture the firewire video to a firewire hard disk, mjpegtools
>to convert to YUV and wav files and thence to MPEG2 video and MP2 audio
>and some sox stuffed in the middle of the pipeline to boost the audio
>gain 36dB since I screwed up the gain on the original recording (along
>with
>having the recorder in 12-bit mode so the sampling is only 32 KHz).
>
>You will need an MPEG2 decoder to view the video (I use DVDexpress
>with IPTV viewer).  Hmmm, I wonder if Xine can be turned into an RTP
>client?
>
>The video work is amatuerish, lighting is poor, and the editing is
>non-existent.  The audio was set up entirely to hear the instruments
>so one has to strain to hear the speech unfortunately.  It's basically
>just documentation of a live event except for the part where I ran out
>of tape in the middle of the professor's making a point:-)
>
>v=0
>o=- 61489 6 IN IP4 128.59.31.169
>s=David Geber
>i=cello master class demo
>u=http://www.columbia.edu/acis/networks/advanced/geber
>
>p=+1 212-854-1919
>b=AS:5384
>t=0 0
>a=type:broadcast
>a=x-iptv-ipr:(c) 2001 The Trustees of Columbia University in the City of
>New York
>a=tool:IP/TV Content Manager 3.2.24
>a=x-iptv-local:IP/TV Content Manager 3.2.24
>a=x-iptv-file:1 name geber+36db.mpg
>a=x-iptv-type:scheduled
>m=video 61552 RTP/AVP 32
>c=IN IP4 224.2.211.27/127
>a=framerate:30
>a=x-iptv-svr:video iptvhost.cc.columbia.edu file 1 loop
>m=audio 21300 RTP/AVP 14
>c=IN IP4 224.2.241.169/127
>a=x-iptv-svr:audio iptvhost.cc.columbia.edu file 1 loop
>
>My next event (1/29) I'll be trying to record DV live to disk using
>dvgrab....
>
>BTW, see if you can tell which participant was next to the DV recorder
>and which one was halfway across the country:-)
>
>/a
>
>