root@pisces:~# /usr/sbin/webcam.sh
ffserver version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  built on Aug  8 2012 13:53:20 with gcc 4.6.3
  configuration:
  libavutil      51. 54.100 / 51. 54.100
  libavcodec     54. 23.100 / 54. 23.100
ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers
  built on Aug  8 2012 13:53:20 with gcc 4.6.3
  configuration:
  libavutil      51. 54.100 / 51. 54.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.100 / 54.  6.100
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libavformat    54.  6.100 / 54.  6.100
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
[video4linux2,v4l2 @ 0x19b6520] [3]Capabilities: 4000001
[video4linux2,v4l2 @ 0x19b6520] The v4l2 frame is 65496 bytes, but 614400 bytes are expected
[video4linux2,v4l2 @ 0x19b6520] Estimating duration from bitrate, this may be inaccurate
Input #0, video4linux2,v4l2, from '/dev/video0':
  Duration: N/A, bitrate: 24576 kb/s
    Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 24576 kb/s, 5 tbr, 1000k tbn, 5 tbc
[buffer @ 0x19b8610] w:640 h:480 pixfmt:yuyv422 tb:1/1000000 sar:0/1 sws_param:flags=2
[buffersink @ 0x19b8940] No opaque field provided
[scale @ 0x19baea0] w:640 h:480 fmt:yuyv422 sar:0/1 -> w:640 h:480 fmt:yuvj422p sar:0/1 flags:0x4
Output #0, ffm, to 'http://localhost/webcam.ffm':
  Metadata:
    encoder         : Lavf54.6.100
    Stream #0:0: Video: mjpeg, yuvj422p, 640x480, q=1-10, 2000 kb/s, 1000k tbn, 5 tbc
Stream mapping:
  Stream #0:0 -> #0:0 (rawvideo -> mjpeg)
Press [q] to stop, [?] for help
[video4linux2,v4l2 @ 0x19b6520] The v4l2 frame is 63244 bytes, but 614400 bytes are expected
frame=    0 fps=0.0 q=0.0 Lsize=       4kB time=00:00:00.00 bitrate=   0.0kbits/s
video:0kB audio:0kB global headers:0kB muxing overhead inf%
Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)
root@pisces:~#