fetch http://www.thedirks.org/v4l2/v4l2dwg.htm
fetch http://www.linuxtv.org/downloads/video4linux/v4l2dwgNew.html
fetch https://www.cs.tcd.ie/courses/csll/furlongm0203.pdf
fetch http://www.linuxtv.org/downloads/video4linux/API/V4L1_API.html
fetch http://www.linuxtv.org/downloads/video4linux/API/V4L2_API/spec-single/v4l2.html
fetch http://linuxtv.org/downloads/video4linux/API/V4L2_API/v4l2spec/v4l2.pdf
fetch http://linux.bytesex.org/v4l2/API.html
fetch http://v4l2spec.bytesex.org/v4l2spec/capture.c
fetch http://www.thedirks.org/v4l2/v4l2dev.htm