[PD] four PS3 Eye on Mac Pro and Pd-ext and GEM

Pagano, Patrick pat at digitalworlds.ufl.edu
Fri May 20 22:25:35 CEST 2011

I find both OSX and ubuntu start to tweak out after 2 /dev/videos are started
I have tested this on ubuntu 10.04 with pdp_qt running 2 logitech Pro 4000 webcams

I find much better response with multiple hauppauge cards with s-video ins
I can get 4 without squawks


From: chris clepper <cgclepper at gmail.com<mailto:cgclepper at gmail.com>>
Date: Fri, 20 May 2011 16:19:51 -0400
To: Jack <jack at rybn.org<mailto:jack at rybn.org>>
Cc: "Pd-list at iem.at<mailto:Pd-list at iem.at>" <Pd-list at iem.at<mailto:Pd-list at iem.at>>
Subject: Re: [PD] four PS3 Eye on Mac Pro and Pd-ext and GEM


I think two of those cards might draw too much power to run at the same time?  Also, check the PCIe lane speeds and try running them at 4x or 8x rather than 16x.

AS far as getting 4 of the same cam running, it depends on how the driver presents multiple cams to Quicktime.  It might show up as one device with four inputs, for example.  Use the 'dialog' message to check it out.

On Thu, May 19, 2011 at 5:00 AM, Jack <jack at rybn.org<mailto:jack at rybn.org>> wrote:
Thanx Mathieu,

I will give it a try with your tips.
I have started to install Ubuntu 10.04 on the Mac Pro and i think i will
use this OS.

In fact, i am crazy because i have installed two ATI Radeon HD 5770 on
this Mac Pro (version 5.1). Each card has 2 Mini Display Ports and 1 DVI
port. On the Apple website it is write each graphic card accept a
resolution of 2560x1600 px. When i plug 2 TV screen (HDMI and each
screen with 1280x768px) on the 2 Mini Display Port on one card (with an
adapter Mini Display Port/HDMI), it works fine. But if i use the second
card with the same configuration (so 4 TV screen on the 4 Mini Display
Port), it seems the computer have not enough power, the Finder quit each
10 second.
I use MacOSX.6.6 and this is not the lastest version (the lastest is
X.6.7 and maybe it is working with this version but now i have no time
to test this config).

With Ubuntu, the sytem start to load then the 4 screens stay black. I
have to unplug the 2 cables on one graphic card to boot normaly. So i
can only use 2 screens.

I don't know where is the problem (power ? Apple computers ?).
If someone have any experience on this problem, i will be happy to
listen him.

Now, the solution that i am going to use :
1 Mac Pro with Ubuntu and one graphic card (ATI Radeon HD 5770)
1 PC with Ubuntu and one graphic card (NVidia GT 440 or NVidia GTX 460)


Le mercredi 18 mai 2011 à 11:58 -0400, Mathieu Bouchard a écrit :
> On Wed, 18 May 2011, jack at rybn.org<mailto:jack at rybn.org> wrote:
> > I'm going to work on a Mac Pro with MacOsX.6.7 and the latest stable
> > Pd-extended 0.42.5. I would like to connect four PS3 Eye on this
> > computer and use GEM with pix_video to read these four devices in four
> > instance of Pd (=> one camera per instance of pd). I will use Macam
> > driver (or something else ?) Is it easy to get each camera working in
> > the same time on this system ? Do you have experience in this area ?
> My experience with just one cam on OSX and Pd-extended 42 was that object
> creation order mattered because each [pix_video] object automatically
> opens the first available camera AND the "device 1" method didn't work.
> So, to access only the 2nd camera, I had to create two objects and only
> use the 2nd one.
> using 4 [pix_video] objects for 4 cameras may work, but they will be
> assigned by creation order.
>   _______________________________________________________________________
> | Mathieu Bouchard ---- tél: +1.514.383.3801<tel:%2B1.514.383.3801> ---- Villeray, Montréal, QC

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