People are commenting on a torrent file and I don't know if I should download it or not. I can understand their comments..

What do these mean?
BrRip
DvdRip
CAM
and they werelike rating it
V=2
A=3
M=5
something like that If you cannot understand me please refer to this
http://thepiratebay.se/torrent/6972363/The_Devil_Inside_2012_CAM_XVID_NEW_SOURCE_UnKnOwN
Please explain their comments Thanks