if u want to use ur camera to record ur gameplay digitally then this is the setup and wire u must have

Double sided av cord
2 splitters
Av to camera

then u must put in one of the red wires of the double sided av cord in one splitter and the yellow in the second one then connect the red of the av to camera in the splitter you put the red from the double sided and do the same with yellow then the two from your game system into the one spot of both the splitters left once again yellow with yellow and red with red then plug the other side of the double sided av cord into there respected spots on your tv and you can record ur gameplay on your video camera while looking at the tv just press record on your camera to start recording and stop to stop

if thats too complicated then yea i would go with the video camera on tripod

PS: yea i know that sounded confusing but it is quite simple PM me if u have questions

get a capture card.

Dazzle capture card. You should go into the multimedia section for tutorials.