Re: [SLUG] WebCams

From: Derek Glidden (dglidden@illusionary.com)
Date: Thu Jun 28 2001 - 11:13:37 EDT


Jason Pratt wrote:
>
> I have a Logitech USB WebCam. Does anyone know if this is supported in some
> way in Linux? How can I set it up?

You'll have to find out what CCD/USB chip is in your camera. Then find
the appropriate website for the driver to find out if that particular
combination is supported. You'll likely have to run the 2.4 kernel to
make it work unless the particular driver has been backported to the 2.2
series.

Here are some links to get you started:

http://www.exploits.org/v4l/

http://www.linux-usb.org/

http://digilander.iol.it/demarchidaniele/quickcam-vc.html

http://webcam.sourceforge.net/

http://alpha.dyndns.org/ov511/

Semi-related: We've bought several of the "Creative Webcam Plus" (Model
CT6840) USB Cams at work. I've seen 'em for under $50 online. They work
great with the OV511 driver linked to above. (But make sure you get
EXACTLY that model, since there are several different "Creative Webcam"
models other than the "Plus".) Framerate isn't fantastic, but what can
you expect from a USB video camera? For less than $50, they're hard to
beat though.

-- 
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
#!/usr/bin/perl -w
$_='while(read+STDIN,$_,2048){$a=29;$b=73;$c=142;$t=255;@t=map
{$_%16or$t^=$c^=($m=(11,10,116,100,11,122,20,100)[$_/16%8])&110;
$t^=(72,@z=(64,72,$a^=12*($_%16-2?0:$m&17)),$b^=$_%64?12:0,@z)
[$_%8]}(16..271);if((@a=unx"C*",$_)[20]&48){$h=5;$_=unxb24,join
"",@b=map{xB8,unxb8,chr($_^$a[--$h+84])}@ARGV;s/...$/1$&/;$d=
unxV,xb25,$_;$e=256|(ord$b[4])<<9|ord$b[3];$d=$d>>8^($f=$t&($d
>>12^$d>>4^$d^$d/8))<<17,$e=$e>>8^($t&($g=($q=$e>>14&7^$e)^$q*
8^$q<<6))<<9,$_=$t[$_]^(($h>>=8)+=$f+(~$g&$t))for@a[128..$#a]}
print+x"C*",@a}';s/x/pack+/g;eval 

usage: qrpff 153 2 8 105 225 < /mnt/dvd/VOB_FILENAME \ | extract_mpeg2 | mpeg2dec -

http://www.eff.org/ http://www.opendvd.org/ http://www.cs.cmu.edu/~dst/DeCSS/Gallery/



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