i do a lot of the recording myself on video thing for my members on my spiritual site, although im not much cop as im only a beginner, they dont think im that bad. I use a cheap Panasonic hd cam looks a bit like a mobile phone im sure you know the sort of thing i mean, its called the Panasonic HM-TA1EB-H Camcorder.retails about £60.. while its far from being studio quality it passes for ok quality and if you take your time to get the volume matched between your backing track and your amp it can sound even better im sure, i dont usually bother messing about too much though i just plug in... place the cam where i want it and away i go to destroy another tune...
here is an example of the quality, but like i said if you take your time with the volumes im sure you can get it sounding better than this...

http://www.youtube.com/watch?v=EEXDB5JYZg8