TODO list (short term):
=======================
* fix clocking issues by using gst clock for v4lsrc and by using it
    as a correction for v4lmjpegsrc/v4l2src (pause brokenness etc.)
* v4lsrc/v4lmjpegsrc/v4l2src: fix interlacing (not handled at all...)

TODO list (long term):
======================
* v4lmpegsrc (*hint* MPEG card needed *hint*)
* v4l2sink
* BSD-videosrc (bktr)
* color correction (brightness, hue, etc.)
* gamma correction

Useful Documentation:
=====================
MJPEG/V4L API : ./videodev_mjpeg.h
Linux/V4L API : /usr/include/linux/videodev.h or
                http://roadrunner.swansea.uk.linux.org/v4l.shtml
Linux/V4L2 API: /usr/include/linux/videodev2.h or
                http://www.thedirks.org/v4l2/
                (kernel patches: http://bytesex.org/patches/)
BSD/Meteor API: /usr/include/machine/ioctl_meteor.h
mjpegtools    : http://www.sourceforge.net/projects/mjpeg