root@beagleboard:~# mplayer tv:// -tv driver=v4l2:width=640:height=480:device=/dev/video0
MPlayer UNKNOWN-4.3.3 (C) 2000-2010 MPlayer Team

Playing tv://.
TV file format detected.
Selected driver: v4l2
 name: Video 4 Linux 2 input
 author: Martin Olschewski <[email protected]>
 comment: first try, more to come ;-)
v4l2: your device driver does not support VIDIOC_G_STD ioctl, VIDIOC_G_PARM was used instead.
Selected device: HD Webcam C525
 Capabilities:  video capture  streaming
 supported norms:
 inputs: 0 = Camera 1;
 Current input: 0
 Current format: YUYV
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
v4l2: ioctl set format failed: Invalid argument
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: ioctl set mute failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
v4l2: ioctl query control failed: Invalid argument
==========================================================================
Opening video decoder: [raw] RAW Uncompressed Video
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 640x480 => 640x480 Packed YUY2
Selected video codec: [rawyuy2] vfm: raw (RAW YUY2)
==========================================================================
Audio: no sound
Starting playback...
v4l2: select timeout
V:   0.0   1/  1 ??% ??% ??,?% 0 0
v4l2: select timeout
V:   0.0   3/  3 ??% ??% ??,?% 0 0
v4l2: select timeout
V:   0.0   5/  5 ??% ??% ??,?% 0 0
Capturing not enabled (forgot -capture parameter?)
v4l2: select timeout
V:   0.0   7/  7 ??% ??% ??,?% 0 0
v4l2: select timeout
V:   0.0   9/  9 ??% ??% ??,?% 0 0
v4l2: select timeout
V:   0.0  10/ 10 ??% ??% ??,?% 0 0
Capturing not enabled (forgot -capture parameter?)
v4l2: select timeout
V:   0.0  11/ 11 ??% ??% ??,?% 0 0
Capturing not enabled (forgot -capture parameter?)
V:   0.0  12/ 12 ??% ??% ??,?% 0 0
Capturing not enabled (forgot -capture parameter?)


MPlayer interrupted by signal 2 in module: video_read_frame
v4l2: select timeout
V:   0.0  13/ 13 ??% ??% ??,?% 0 0


MPlayer interrupted by signal 2 in module: free_demuxer
root@beagleboard:~#