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

[Derek Piper <dcpiper@indiana.edu>]

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