Re: using 2 cameras...

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You might try loading the module with fps=5 and compression=3 [*], and 
making sure that pwcx-i386 is loaded (kernel gpl taint not 
withstanding)

That could help you on the bandwidth side...

Mark

[*] I just have the following in modules.conf (having put pwcx-i386.o 
in /lib/modules).  The dev_hint is so the bttv board gets 81:0 and the 
camera 81:1, even if bttv isn't loaded when I access the cam...

options pwc power_save=1 fps=5 compression=3 trace=0 dev_hint=1
post-install pwc /sbin/insmod -f /lib/modules/pwcx-i386.o
pre-remove   pwc /sbin/rmmod pwcx-i386

On Tue, 12 Mar 2002, V wrote:

> Date: Tue, 12 Mar 2002 18:01:44 +0100
> From: V <maury@xxxxxxxxxxx>
> Reply-To: video4linux-list@xxxxxxxxxx
> To: video4linux-list@xxxxxxxxxx
> Subject: Re:  using 2 cameras...
> 
> The same problem happens to me on my laptop ohci port, but I can get two
> images on my desktop uhci port.  Some body told me that the camera drivers
> gets the entire USB bandwidth, and a second camera can not get any
> bandwidth.  One way around is to have a second USB port, or buy a card that
> has each USB port separate (not shared).
> 
> Ted
> 
> 
> Thank you, actually I don't know weither my ports are separated or not. I
> have two of them, that's all I can tell !
> how could I check this ?
> Thanks again,
> 
> Vincent

-- 
+-------------------------------------------------------------------------+
Mark Cooke                  The views expressed above are mine and are not
Systems Programmer          necessarily representative of university policy
University Of Birmingham    URL: http://www.sr.bham.ac.uk/~mpc/
+-------------------------------------------------------------------------+





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