[PD] pix_video: composite or Firewire ?

[Olivier Heinry]

Le jeudi 15 novembre 2007 à 20:23 -0800, Jaime Oliver a écrit :
> I think your problem may not be in the driver but in the fact that you
> are using DV which compresses both at the camera and in your computer
> bus... (i believe...) I am also looking for the best (and cheapest)
> solution for latency. you should check uncompressed firewire options.

Coud you name a few?

> 
> The conexant 878 chip seems to be the fastest one that i've tried so
> far to capture analog video. it's a 20$ PCI tv tuner

I'm sorry it's a PCI card now my main machine is a laptop! 

> 
> On 11/15/07, Olivier Heinry <olivier.heinry at manga-burgah.net> wrote:
> > Le jeudi 15 novembre 2007 à 18:47 -0500, Alexandre Quessy a écrit :
> > > Hi all,
> > > Preparing one more Gem video perf with circus. :) (the 4th!)
> > >
> > > I didn't like much using Firewire (ieee1394) under GNU/Linux, since
> > > the driver is pretty slow.
> >
> > > What would you guys recommend, if I want to use a nice miniDV camera ?
> > > It could either be a composite (BNC cable) capture card under
> > > GNU/Linux or the Firewire uner Mac OS X.
> >
> >  I've got a conexant BTxxx capture chip on a PCI board. I think the
> > problem of the analog capture card its the poorer image quality than
> > Firewire. And delay is quite noticeable to my opinion even on a linux
> > box.
> >
> > >
> > > I think that the BNC cable is more flexible an easier to handle than
> > > the Firewire. It can also be very long, and that suits my needs, since
> > > it gives more flexibility to the cameraman.
> >
> > There is  also the firewire over optic fibre solutions: one of the dance
> > companies Iw ork with purchased one, and it has an excellent image
> > quality and very low delay over a 100m fiber. The fiber is actually more
> > flexible than a cooper coax cable and a lot lighter. The prob with BNC
> > is the weight of the cable itself which tends to damage  the
> > camera/peripheral connectors after a while.
> >
> > See  http://www.kramerelectronics.com/indexes/item.asp?name=648 for one
> > of the cheapest FW over optic fibre solutions around in France.
> > ++
> > O.
> >
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> >
> >
> 
> 
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