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

[Almuth Barta]

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>
>> ---------------------------------------------------------------------
>>
>

-- 
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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
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