[AG-TECH] more on multi-input capture.

[Fred Dech]

Derek.

how are you able to see all 4 sources if only one shows up as an option
when you are adding a VideoService in the AG NodeManagement tool?

you set up 4 VideoProducerServices with the single source
that is available to you and then you are able to see all four sources
from the Video Sources Settings submenu of each Vic menu??

--fred

On Wed, Jul 13, 2005 at 09:46AM, Derek Piper said:
> 
> 	To clarify this, you can still use all four inputs for an AG session 
> 	- you just need to have 4 instances of VIC
> 
> 	Derek
> 
> Thomas D. Uram wrote:
> >There is a vfw/wdm mapper, but it can only map a single wdm device to vfw, 
> >so vic only has
> >access to one of the four.
> >
> >
> >On 07/13/05 08:20, Derek Piper wrote:
> >
> >>   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