[AG-TECH] Sony EVI-HD1 camera

[Ladan Gharai]

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/
>>
>>
>