From: Patrick De Muynck <[EMAIL PROTECTED]>
Subject: multiple audio cards for live broadcast / synchronization


Hi,

I'm planning the purchase of a WinNT station for RealProducer
live broadcast encoding.

Q1

For some projects I need to have two RealProducers running in the same
box which will take their respective inputs from two installed
Osprey-100 cards.  But what about the audio?  Can I install two audio
cards in one WinNT box and actually feed the captured audios to two
different RealProducers?  Any caveats?  Any advice and/or
recommendations from somebody who has actually done this?

Or should I rather use the Osprey-1000/G2 solution for this?

Q2

Is it possible to synchronize live audio or video streams at all if
they don't originate from the same RealProducer process?  The case of
interest is a live event which is simultaneously translated in one or
more languages.  The idea would be to live encode the video once and
combine it via SMIL with the encoded audio stream for the desired
language.  My small test seemed to indicate that you shouldn't
expect streams to be synchronized (even approximatively) even
if audio and video stream originate from the same
encoder box!?

Or would there be any plans for RealProducer G2 to support encoding
multiple audio channels in a video?


Please Cc: to [EMAIL PROTECTED] ...

Thank you,

Patrick De Muynck

BELNET, the Belgian National Research Network

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