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Re: VLC + Vista Multicast Issues


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  • From: Stig Venaas <>
  • To: Gary Parker <>
  • Cc: Nicholas J Humfrey <>,
  • Subject: Re: VLC + Vista Multicast Issues
  • Date: Thu, 05 Jul 2007 16:54:36 +0200

Gary Parker wrote:

On 5 Jul 2007, at 14:26, Nicholas J Humfrey wrote:

I find that these kinds of problems are the result of using a mixture of IGMPv2 and IGMPv3. Mac OS X uses IGMPv2, and I guess Vista should be using IGMPv3.

Cheers Nick, that makes sense.

It might be the reason, but it should/does not make sense. When an
IGMPv2 host sends IGMPv2 reports, the router should start doing IGMPv2
queries and the IGMPv3 host should fall back to using IGMPv2 for that
group as well. See section 7 of RFC 3376.

It would be good to investigate this further and find out what is
broken. This is supposed to work perfectly fine.

Stig


Btw; udp://@233.80.58.114:5000 is working fine here on my Mac! Is this a Freewire channel?

Yes it is, Inuk multicast all their traffic over JANET and although the video is only viewable with their client or a lot of fiddling around with graphedit and DLLs in Windows the radio stations are all plain MPEG2 audio and can be listened to quite happily in VLC. We have a local SAP announcer on campus that lists all the Inuk radio streams for the use of people who can't/won't use the Freewire client.

Gary




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