xbmc@meskhenet:~$ ffmpeg -f video4linux2 -i /dev/v4l/by-id/usb-Microsoft_Microsoft®_LifeCam_HD-3000-video-index0 http://localhost:30001/cam1.ffm
ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers
  built on Apr  2 2013 17:02:36 with gcc 4.6.3
*** THIS PROGRAM IS DEPRECATED ***
This program is only provided for compatibility and will be removed in a future release. Please use avconv instead.
[video4linux2 @ 0x1f009c0] Estimating duration from bitrate, this may be inaccurate
Input #0, video4linux2, from '/dev/v4l/by-id/usb-Microsoft_Microsoft®_LifeCam_HD-3000-video-index0':
  Duration: N/A, start: 399453.228362, bitrate: 163840 kb/s
    Stream #0.0: Video: rawvideo, yuyv422, 1280x800, 163840 kb/s, 10 tbr, 1000k tbn, 10 tbc
[buffer @ 0x1f01e00] w:1280 h:800 pixfmt:yuyv422
[scale @ 0x1f01ae0] w:1280 h:800 fmt:yuyv422 -> w:1280 h:720 fmt:yuv420p flags:0x4
Segmentation fault (core dumped)
xbmc@meskhenet:~$