[AG-TECH] more on multi-input capture.
Derek Piper
dcpiper at indiana.edu
Wed Jul 13 08:20:10 CDT 2005
I believe there is a 'wrapper' in 2000/XP for WDM drivers to the VfW
interface that VIC uses.
Derek
Fred Dech wrote:
> thanks, Derek.
> but what i don't understand is this.
> if the Spectra8 currently uses WDM drivers in Windows...
> VIC relies on VFW type drivers. that's what the problem is/was with the
> newer WDM driver Winnov Videum cards and VIC.
> i'm missing something.
>
> --fred
>
> On Tue, Jul 12, 2005 at 04:38PM, Derek Piper said:
>
>> Hi,
>>
>> Having installed a Spectra8 after using a WinTV 150PVR, I can tell
>> you it's *very easy* to get going. Yes, each input installs a driver
>>individually (4 goes round the 'found new hardware' wizard - yawn, but
>>once it's done it's done). After that it just works like 4 individual
>>capture cards. As mentioned before, the inherent problem with VIC not
>>being able to differentiate between the sources and 'colliding' over
>>what input to use still remains, but that's Windows thing and happens
>>any time there is more than one capture device. You just have to select
>>the 'other' source(s), whatever they may be, when the window prompts you
>>and all sources will come up nicely.
>> Spectra8 cards, being 4 BT878 chips, would work nicely under Linux
>> and not suffer from that problem (they'd just be /dev/video0, /dev/video1
>>etc.), although I have not personally tested it.
>>
>> Derek
>>
>>Fred Dech wrote:
>>
>>>this has been covered in various ways at various times. but i've got
>>>a new question on this subject.
>>>
>>>we had a problem with the last Winnov Videum card we spec'd for another
>>>institution because before they purchased the card the Videum been upgraded
>>>to WDM drivers. while the VFW drivers would make it work right for AG,
>>>this
>>>other institution needed to use the software that came with the capture
>>>card.
>>>
>>>i've noticed quite a few posts by people successfully using the Spectra8
>>>4 input card. so i've now come to the point of replacing that Winnov
>>>Videum with something that will cover all the needs of our collaborators;
>>>proprietary capture software and AG.
>>>
>>>i'm looking at a web page with Spectra8 specifications. i'm very, very
>>>surprised to see, "... each frame grabber channel has it's own WDM driver,
>>>allowing you to capture from 4 individual video channels."
>>>now i'm really confused. is the WDM driver relatively recent for the
>>>Spectra8? it must be... or how have people made it work well with AG...
>>>
>>>any insights would be greatly appreciated.
>>>
>>>--fred
>>>
>>>
>>
>>--
>>Derek Piper - dcpiper at indiana.edu - (812) 856 0111
>>IRI 323, School of Informatics
>>Indiana University, Bloomington, Indiana
>
>
>
--
Derek Piper - dcpiper at indiana.edu - (812) 856 0111
IRI 323, School of Informatics
Indiana University, Bloomington, Indiana
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