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List:       ms-wmtalk
Subject:    Re: Update to advice on live streaming of Powerpoint on WMList
From:       Charlie Reid <charlie.reid () ABS ! GOV ! AU>
Date:       2005-08-24 0:12:16
Message-ID: OF508EA209.A62BCB44-ONCA257067.000021FB-CA257067.00012026 () abs ! gov ! au
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Sounds just like what we are trying to do.  Are there any examples of the
output that I can look at?

Multimedia and Online Learning team
Software Management
Technology Infrastructure Branch


WMTalk <WMTalk@DISCUSS.MICROSOFT.COM> wrote on 23/08/2005 07:47:26 PM:

> Hi
>
> We have had a number of requests for further details of our Datapath Pro
> and Kramer video switch set up.
>
> Here is the full mojo from Mike Skinner, the AV person who has put this
> together. Fame at last Mike!
>
> Basically, what we have is two modes of operation, Video Streaming and
> Presentation Streaming -
>
> Video Streaming Mode
> ---------------------
> The video input (DV, S-Video, or Composite) and the audio input (DV,
> Balanced XLR, Unbalanced Phono) all go straight into the Osprey 560
> capture card, where they are then picked up by WME and RP.
>
> Presentation Streaming Mode
> ----------------------------
> In this mode, we split the video and audio capture between two devices,
> rather than send both to the Osprey.  The audio input is captured
> directly into the Osprey as before.  The video inputs are routed into
> the Kramer VP-720DS Scaler/Switcher.  We are currently utilising 3 video
> inputs(VGA, Composite Video, S-Video), but the Kramer has a whole range
> of inputs (2x composite, 2x s-video, 1x VGA, 1x DVI, 1x component
> video), all of which can be switched to the output via direct buttons on
> the front of the unit, or IR remote control handset.  The output from
> the Kramer is an RGB signal taken via 15-pin VGA connection straight
> into the Datapath card, where it is captured at XGA (the output from the
> Kramer can be scaled to a whole range of resolutions, we currently use
> XGA).  It is then picked up from the Datapath by WME, and the audio from
> the Osprey.  Latency in the Kramer is extremely low so there is no
> noticeable lag between video and audio when capturing from the 2
> seperate devices.  The other added benefit of having the Kramer in the
> system is that as well as switching between multiple inputs for a
> presentation (video-data-video etc), we can also incorporate a
> Picture-In-Picture.  This works well when a Powerpoint presentation is
> being streamed at XGA or VGA, with the addition of a video PIP in one
> corner showing the speakers head.
>
> More info on the Kramer unit can be found at
> http://www.kramerelectronics.com/indexes/item.asp?desc=241
>
> Cheers
>
> Mike
>
>
> Mike Skinner
> Media & Learning Technology Service
> University Of Edinburgh
> Tel: 0131 650 4099
>
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