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

[Derek Piper <dcpiper@indiana.edu>]

	It will happen regardless of the type of capture device, just so that's 
clear. If you have more than one device that captures video, if it's a 
USB camera or capture card, then you'll have that problem with Windows.

	Derek

Fred Dech wrote:
> hi Derek.
>
> i see.  that's useful information.  the EVERY TIME clause is a real
> drag, though.  in the case i'm thinking about, using linux is not an
> option.
>
> thanks, though.
>
> --fred
>
> On Wed, Jul 13, 2005 at 02:15PM, Derek Piper said:
>
> > 	No, I explained how that part works my previous post. Maybe a 
> > 	diagram would be good.
> >
> > VIC -> 'Microsoft WDM Image Capture' -> Source0
> > VIC -> 'Microsoft WDM Image Capture' -> Source1
> > VIC -> 'Microsoft WDM Image Capture' -> Source2
> > VIC -> 'Microsoft WDM Image Capture' -> Source3
> >
> > 	VIC only binds to 'Microsoft WDM Image Capture', *it doesn't know 
> > 	about the sources beyond that*. Upon invocation, the WDM driver will choose 
> > the first 'source' it can find, since none was given. This leads to all 
> > four VICs choosing Source0 (probably) and 3 of them will not be able to 
> > get it and will complain by putting up a selector box to choose another 
> > source. So, you go ahead and choose another source, i.e. Source1 for the 
> > first one you have to alter, then Source2 for the other one etc. All 4 
> > VICs will then be up and running. Unfortunately you will need to do this 
> > EVERY TIME you change venues. If it drives you crazy, use a Linux box 
> > for video from multiple sources.
> >
> > 	Derek
--
Derek Piper - dcpiper@indiana.edu - (812) 856 0111
IRI 323, School of Informatics
Indiana University, Bloomington, Indiana