Re: New Internet Webcasting Software Idea

From: Bruno Barberi Gnecco (brunobgDELETETHIS_at_users.sourceforge.net)
Date: 03/01/05 

Date: Tue, 01 Mar 2005 11:22:55 -0300

Måns Rullgård wrote:

>>We're thinking about a 10 second cache before playback begins. Also,
>>one's host for the audio could switch any second of the broadcast if
>>that host doesn't become available. The fan listening to the audio
>>would not notice a dropout, hopefully.
> If you want truly seamless switching between sources you'll probably
> have to continuously receive from at least two sources, and if one
> goes away, find another to replace it. What this does to bandwidth is
> left as an exercise to the reader.
> A more bandwidth friendly solution would be to only receive data from
> one source, but have others "on hold" to quickly replace if something
> happens.

        I think your second suggestion is the way to go. The problem
of having many sources is to guarantee that they will be broadcasting
in synchrony. Adding a 5 or 10s cache, added to the tree-like
network means that some people will be received data that is several
seconds older than others, and a sudden change of source may miss
some seconds of sound. You have to compensate that, someway. 

-- 
Bruno Barberi Gnecco <brunobg_at_users.sourceforge.net>
http://www.lsi.usp.br/~brunobg/
What fools these morals be!

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