[AG-TECH] Sony EVI-HD1 camera

Daniel Eiland deilands at cct.lsu.edu
Fri Mar 9 12:28:57 CST 2007


John already knows of this, but just to mention it. We are currently 
using the Centaurus card to send and receive HD uncompressed video over 
Ultragrid. They work well but are nice and pricey.


Ladan Gharai wrote:
> Hi John,
> On Mar 9, 2007, at 10:07 AM, John I Quebedeaux Jr wrote:
>> Well, that camera does specify the type of output that Ultragrid 
>> works with on that HD-SDI connection (SMPTE-292M output)... i suspect 
>> then the details get down to the hardware on the computer side and 
>> networking, etc. It has other outputs, but not IEE1394 (firewire) 
>> which is where most HD cameras do onboard mpeg2 encoding/lag that 
>> Brian spoke of. I'm... guessing? that HD-SDI is uncompressed.
>   correct, HD-SDI is the uncompressed HDTV format. And there are a 
> number of HDTV capture cards on the market with HD-SDI input/output. 
> The Centaurus card from www.dvs.de  is the capture card the UltraGrid 
> system currently supports.
>  HDTV cameras with IEEE1394 output, provide an MPEG2 compressed HDTV 
> stream.
>  HDMI capture card/cameras becoming available is very interesting and 
> I'd be very interested to see how they compare in performance with 
> HD-SDI systems.
>> My concerns in meetings get back to having an "environment" of human 
>> presence @ multiple sites that can interface naturally - which 
>> includes video sources from the front and back of the room (what I 
>> call "environmental feedback") - typically called the "presenter 
>> camera" in the back of an AG room. I can possibly see having an HD 
>> camera in the front and back of the room to do this... then maybe 
>> another for... i've always felt you can't have enough cameras!
>> -John Q.
>> --John I. Quebedeaux, Jr.; Louisiana State University
>> Computer Manager LBRN; 131 Life Sciences Bldg.
>> e-mail: johnq at lsu.edu; web: http://lbrn.lsu.edu
>> phone: 225-578-0062 / fax: 225-578-2597
>> On Mar 8, 2007, at 4:11 PM, Colin Perkins wrote:
>>> We've done some work with uncompressed HD conferencing which might 
>>> be relevant: http://ultragrid.east.isi.edu/
>>> Colin
>>> On 8 Mar 2007, at 21:14, Brian Corrie wrote:
>>>> Hi John,
>>>> Interesting... Does anyone know anything about SDI HD capture 
>>>> cards. We are looking at HD as well (but no direct experience yet) 
>>>> and the trick seems to be to get video off of the camera avoiding 
>>>> the onboard encoding of the video, which often adds significant 
>>>> latency (which is not good for AG of course). Does anyone know if 
>>>> the SDI out of this camera either has onboard hardware encoding (so 
>>>> low latency) and/or whether the SDI out is uncompressed video (I 
>>>> don't know anything about SDI other than that it is a broadcast 
>>>> oriented standard). Since this is a video conferencing camera one 
>>>> would assume the SDI is raw video (it looks like it base on my 
>>>> reading). So once one gets it out of the camera how does one get it 
>>>> to the computer... There must be an HD SDI capture card available.
>>>> We are looking at the Sony HDR-HC7 prosumer HD camcorder as a 
>>>> possibility. They aren't available yet, but any day now... They 
>>>> have HDMI out, which is uncompressed video. There is a HDMI capture 
>>>> card that can handle raw uncompressed HD video at 1080i available 
>>>> from Black Magic that looks promising... The camera is around $1500 
>>>> and the card is $250.
>>>> http://www.blackmagic-design.com/products/intensity/
>>>> We are going to be purchasing this pair as soon as the camera is 
>>>> available, so I will let everyone know how this works out. If it 
>>>> does work its a pretty inexpensive HD solution!
>>>> Cheers,
>>>> Brian
>>>> 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 Q.
>>>>> --John I. Quebedeaux, Jr.; Louisiana State University
>>>>> Computer Manager LBRN; 131 Life Sciences Bldg.
>>>>> e-mail: johnq at lsu.edu; web: http://lbrn.lsu.edu
>>>>> phone: 225-578-0062 / fax: 225-578-2597
>>> --Colin Perkins
>>> http://csperkins.org/


Best Regards -

Daniel L. Eiland

Audio/Video Support

The Center for Computation and Technology

Louisiana State University

deilands at cct.lsu.edu

IM: cctdeilands

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