[AG-TECH] Sony EVI-HD1 camera
Ladan Gharai
ladan at ISI.EDU
Fri Mar 9 14:27:27 CST 2007
Hi Daniel:
Yes I have heard of this work at LSU from John and via the CESNET
folks (Petr Holub, et al). Is there a website or any other reference
to it? My understanding is that a class is being taught between 3
different locations?
Yes, the Centaurus cards are pricey! but a new CentaurusII card is
available now at a lower cost (almost half). This card is compatible
with the SDK we have been using and comes in either PCIe and PCIX.
Ladan
On Mar 9, 2007, at 1:28 PM, Daniel Eiland wrote:
> Hi,
>
> 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.
>
> -Daniel.
>
> 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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