[AG-TECH] Limit for number of video devices?

[Derek Piper]

	I have to ask, since recording was mentioned :>, why it would be 
important for you to record just your own video streams? If you want to 
record whole meetings, I'd direct your attention to AGVCR (yes, a plug 
for my own project... who'd have thought it?) since it's designed to 
record AccessGrid meetings. Of course, you can do both, I just wondered 
out of curiosity what your reasons for wanting a copy video out were.
	http://iri.informatics.indiana.edu/~dcpiper/agvcr/

	Derek

Almuth Barta wrote:
> Hi John,
> 
> that's, what I understand. We thought of using simulstream to be able to 
> record the video at the same time.
> The only problem I have is, that I cannot choose the fourth input of the 
> capture card for AGN because each video input of the capture card gives 
> 4 devices in the list of available video devices and the list in AG 
> Client software seems to be limited to show the first 10 only.
> When all 16 "devices" would be shown, I could choose one for each of the 
> 4 cameras possibly connected.
> 
> What I have found is the file config.py in 
> c:\Python23\Lib\site-packages\Accessgrid3\Accessgrid\Platform\win32
> 
> herein is
> 
> def GetResources(self)
> ...
> ...
> 
> here I see a vfwscan.exe and a wdmscan.exe and finally a search in the 
> registry. The registry has no entries for the osprey card at the 
> searched location, so I think I cannot add something there.
> I didn't find more about vfwscan and wdmscan until now.
> 
> Still hoping for a hint.
> Almuth
> 
> 
> John I Quebedeaux Jr wrote:
>> Almuth,
>>
>> Simulstream is the Osprey's software for allowing multiple 
>> applications to access the same stream. It  isn't usually needed for 
>> AG use unless you're requiring that multiple applications are needing 
>> access to the same stream. For example,  It could be useful if you 
>> wanted to web-stream your outputs as well as have VIC transmit them. 
>> If you look, you now have multiple copies of the same stream available 
>> to you.... from each capture.
>>
>> -John Q.
>>
>> -- 
>>
>> John I. Quebedeaux, Jr.; Louisiana State University
>>
>> Computer Manager LBRN; 131 Life Sciences Bldg.
>>
>> e-mail: johnq at lsu.edu <mailto:johnq at lsu.edu>; web: http://lbrn.lsu.edu
>>
>> phone: 225-578-0062 / fax: 225-578-2597
>>
>>
>>
>> On Jan 30, 2007, at 8:25 AM, Almuth Barta wrote:
>>
>>> I don't want to use 16 cameras, of course.
>>> But I want to get the complete list to be able to choose the ones I 
>>> need (i.e. those numbered 1A.1, 1B.1, 1C.1 and 1D.1)
>>>
>>> Almuth
>>>
>>> Derek Piper wrote:
>>>>
>>>>     Apart from any technical limitations that may exist it should be 
>>>> pointed out that you should probably not have THAT many cameras as 
>>>> your site would be rather overwhelming to other AG participants. 2 
>>>> or 3 cameras should suffice for most meetings.
>>>>
>>>>     Derek
>>>>
>>>> Almuth Barta wrote:
>>>>> Hi,
>>>>>
>>>>> I'm setting up a new machine as AGN Client (WindowsXP SP2). For 
>>>>> Video I have a Viewcast Osprey 440 Capture card with 4 Video inputs.
>>>>>
>>>>> These videoinputs were shown as
>>>>> Osprey-440 Video Device 1A
>>>>> Osprey-440 Video Device 1B
>>>>> Osprey-440 Video Device 1C
>>>>> Osprey-440 Video Device 1D
>>>>> So far, everything was ok.
>>>>>
>>>>> After registering Simulstream, i got a list of 16 devices:
>>>>> Osprey-440 Video Device 1A.1
>>>>> Osprey-440 Video Device 1A.2
>>>>> Osprey-440 Video Device 1A.3
>>>>> Osprey-440 Video Device 1A.4
>>>>> Osprey-440 Video Device 1B.1
>>>>> ...
>>>>> ...
>>>>> Osprey-440 Video Device 1D.4.
>>>>> These are shown in the Swiftcap Software, that came with the Osprey 
>>>>> card.
>>>>>
>>>>> The AGN-client only shows the first 10 of these video devices, so I 
>>>>> get a list with only:
>>>>> Osprey-440 Video Device 1A.3
>>>>> Osprey-440 Video Device 1A.2
>>>>> Osprey-440 Video Device 1A.4
>>>>> Osprey-440 Video Device 1A.1
>>>>> Osprey-440 Video Device 1B.3
>>>>> Osprey-440 Video Device 1B.2
>>>>> Osprey-440 Video Device 1B.4
>>>>> Osprey-440 Video Device 1B.1
>>>>> Osprey-440 Video Device 1C.3
>>>>> Osprey-440 Video Device 1C.2
>>>>>
>>>>> Is there a limitation in the scan for video devices so that I 
>>>>> cannot see more than 10?
>>>>> Any hints how I can increase this?
>>>>>
>>>>> Thanks for any help.
>>>>> Almuth
>>>>>
>>>>
>>>
>>> -- 
>>> ---------------------------------------------------------------------
>>> Almuth Barta
>>> Systemadministratorin
>>> Max-Planck-Institut für Gravitationsphysik / Albert-Einstein-Institut
>>> Am Mühlenberg 1,  14476 Potsdam-Golm
>>> Tel.: +49 (0)331 567 7304   Fax:  +49 (0)331 567 7298
>>> e-mail: almuth.barta at aei.mpg.de <mailto:almuth.barta at aei.mpg.de>
>>> ---------------------------------------------------------------------
>>>
>>
> 

-- 
Derek Piper - dcpiper at indiana.edu - (812) 856 0111
IRI 323, School of Informatics
Indiana University, Bloomington, Indiana