[AG-TECH] Sony EVI-HD1 camera

gurcharan khanna gskpop at cis.rit.edu
Fri Mar 9 08:55:52 CST 2007


I think sending all stream types is a great idea, so the receiver can 
choose the resolutions

A related issue is bandwidth limitations. If I choose to receive 261 
instead of HD for that
reason, then I may not be able to tolerate all those bits on my network. 
So, then the issue
becomes, how do I tell the source not to even send me the HD stream for 
instance but only
the 261 streams? If the HD and 261 are two separate modules, then that 
would work. If they
somehow are all integrated, maybe then that becomes a problem?


Christoph Willing wrote:
> On 09/03/2007, at 3:49 AM, John I Quebedeaux Jr wrote:
>> Someone asked me about this camera for HD use on the AG: 
>> http://www.picturephone.com/products/sony_evi_hd1.htm
>> Anyone have any experience with it? I'm wondering if it was used, how 
>> to best "capture" it into a system for use on the AG... interest in 
>> using HD is high here. I'm more concerned about logistical issues 
>> with high resolution images on displays that don't have that much 
>> "resolution" space - particularly if several sites are involved.
> John,
> With regard to screen space logistics, we've developed a version of 
> vic that does DV and HDV - full details and perhaps a demo at the 
> forthcoming AG Retreat. One of the changes is the ability to resize 
> the video window(s) to any size you like. Thus you could accomodate 
> several streams at smaller than true HD size when display space 
> becomes tight.
> BTW, I think that when DV, HDV, HD are all more common in the AG, best 
> practice will be to always send those formats as duplicates of 
> standard H261 streams so that other sites can choose to view their own 
> preferred mix of H261 and higher resolution formats (somewhat avoiding 
> the screen real estate problem you raised, not to mention bandwidth 
> issues). The cameras we've been testing with have a number of 
> simultaneous outputs available so its trivial to send both DV/HDV and 
> H261 at the same time.
> chris
> Christoph Willing                       +61 7 3365 8350
> QCIF Access Grid Manager
> University of Queensland

Gurcharan S. Khanna, Ph.D.
Director of Research Computing
Office of the Vice President for Research

Director, Interactive Collaboration Environments Laboratory,
Center for the Advancing the Study of Cyberinfrastructure
Rochester Institute of Technology
1 Lomb Memorial Drive
Rochester, New York 14623-5603
Phone: 585-475-7504  ~  Cell: 585-355-1603
Email: gurcharan.khanna at rit.edu
Http:  www.rit.edu/~gskpop

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