[Live-devel] Multicast Streaming

[Marian Kogler]

Hi again. I tried to use Source Specific Multicast once more and now it seems to work. 
I'm sorry for the inconvenience!

-----Original Message-----
From: "Marian Kogler" <m1kogler at edu.uni-klu.ac.at>
To: live-devel at ns.live555.com
Date: Tue, 03 Jun 2008 11:25:43 +0200
Subject: Re: [Live-devel] Multicast Streaming

Thank you for your prompt answer!
I only wonder why the vlc do not cause such a problem with two different multicast streams (different addresses .. same port number). I used the same OS (Ubuntu 7.10).
No merging effect!

Further more, I cannot use different port numbers because I  hardly have an influence on that (I'm only working on the receiver application). 

-----Original Message-----
From: Ross Finlayson <finlayson at live555.com>
To: LIVE555 Streaming Media - development & use 	<live-devel at ns.live555.com>
Date: Tue, 3 Jun 2008 01:39:55 -0700
Subject: Re: [Live-devel] Multicast Streaming

>I use the live library for my master thesis project and encountered 
>the following problem.
>Everytime when I receive two different streams over multicast these 
>two streams get merged.
>I have two different senders which use different multicast addresses 
>but the same port number.

That's your problem - or, more precisely, the problem with your OS. 
Some OS's (including some versions of Linux) have a bug whereby 
incoming packets addressed to different multicast addresses, but the 
same port number, are not distinguished.

The solution is simple: Use different port numbers, as well as 
different multicast addresses.
-- 

Ross Finlayson
Live Networks, Inc.
http://www.live555.com/
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