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  1. or download this
    #!/usr/bin/perl
use strict;
use Video::Capture::V4l;
my $grab = new Video::Capture::V4l("/dev/video0") or die "Unable to op
+en Video device: $!"; print "silent error:$!\n";
$grab->sync(0) or die "unable to sync: $!\n"; #
  2. or download this
    silent error: Illegal seek
unable to sync: Invalid argument
  3. or download this
    mplayer -tv device=/dev/video0:input=2:driver=v4l2:width=320:height=24
+0:norm=ntsc:adevice=/dev/dsp tv://1 -zoom -aspect 4:3