Hi I have a problem with my web cam is a gspca webcam
I have the kernel from
http://code.google.com/p/beagleboard/wiki/BeagleboardRevC3Validation
And I enable the
SONIX JPEG USB Camera Driver
and it works fine when i plug the webcam this is the output
usb 1-2.3: new full speed USB device using ehci-omap and address 6
usb 1-2.3: configuration #1 chosen from 1 choice
gspca: probing 045e:00f5
sonixj: Sonix chip id: 11
gspca: probe ok
gspca: probing 045e:00f5
but when I tried mplayer the screen shows pink images
root@beagleboard:~# mplayer -tv width=320:height=240:driver=v4l2 -fps 15 tv://
MPlayer SVN-r30165-4.3.3 (C) 2000-2009 MPlayer Team
Playing tv://.
TV file format detected.
Selected driver: v4l2
name: Video 4 Linux 2 input
author: Martin Olschewski <olschewski@zpr.uni-koeln.de>
comment: first try, more to come 
Selected device: USB camera
Capabilites: video capture read/write streaming
supported norms:
inputs: 0 = sonixj;
Current input: 0
Current format: unknown (0x4745504a)
tv.c: norm_from_string(pal): Bogus norm parameter, setting default.
v4l2: ioctl enum norm failed: Invalid argument
Error: Cannot set norm!
Selected input hasn't got a tuner!
v4l2: Cannot get fps
v4l2: ioctl set mute failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
vo: couldn't open the X11 display ()!
vo: couldn't open the X11 display ()!
VO XOverlay need a subdriver
[VO_SDL] Using driver: fbcon.
vo: couldn't open the X11 display ()!