/sane.d/v4l.conf

 1#
 2# In order to use the v4linux backend you have to give the device
 3# You can enable multiple lines if
 4# you really have multible v4l devices.
 5
 6# Backends disabled, to re-enable unquote the following lines
 7# See https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug/87312
 8#/dev/bttv0
 9#/dev/video0
10#/dev/video1
11#/dev/video2
12#/dev/video3