All things related to multicast

[Alan Crosswell <>]

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