All things related to multicast

[Tim Peiffer <>]

Has anyone developed and kept current a list of multicast sources that 
are known active?  This is a broader question than a question of 'need 
multicast test stream'.  A bonus would be if anyone had perl/python 
script, etc that listens on and builds a database of active SAPs.

My method currently: Periodically I run through a list of SAP's visible 
in VLC and build a M3U playlist file and use for my 'tv guide' of active 
channels.  Trolling the SAPs are hit and miss, and there are a number of 
SAP sources worldwide that are advertising in the Administratively 
Scoped range 239.0.0.0/8 that provide a significant noise source.

Thanks in advance,
Tim

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Tim Peiffer
Network Support Engineer
Office of Information Technology
University of Minnesota/NorthernLights GigaPOP

+1 612 626-7884 (desk)