[AG-TECH] Number of video devices

Robert Olson olson at mcs.anl.gov
Wed Nov 7 08:28:05 CST 2001

Can you submit this as a feature request in the sourceforge bugtracker?

Have you had good success with the vloopback stuff? I've seen it, but never 
tried it out myself. Does it keep up with the fullrate video capture?


At 08:31 PM 11/7/2001 +0900, shudo at ni.aist.go.jp wrote:
>Hi all,
>I've noticed VIC supports up to 4 video devices on
>Linux. VIC scans from /dev/video0 through /dev/video3
>and the names of the device files are hard-coded into
>the executable.
>I need more device files because I have already over 4
>video capture devices and want to use vloopback, which
>consume 2 or more devicde files.
>   vloopback:
>     http://motion.technolust.cx/vloopback/
>Of course, we can modify the source code of VIC and
>compile it by ourselves. The file which has to be
>modified is vic/video/grabber-video4linux.cpp. You will
>find the following code:
>   /* here you can tune the device names */
>   static const char *devlist[] = {
>       "/dev/video0", "/dev/video1", "/dev/video2", "/dev/video3",
>       NULL
>   };
>It will be nice that the VIC binary being distributed by
>Rober Olson supports over 4 devices:
>   http://www-unix.mcs.anl.gov/~olson/AG/Software/Linux/new-vv/
>   Kazuyuki Shudo, Ph.D.         shudo at ni.aist.go.jp, http://www.shudo.net/
>   Information Technology Research Institute
>   National Institute of Advanced Industrial Science and Technology (AIST)

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