Are you assuming a dvd will only hold 2 hours of content?
If so that isn't the case it will hold much more than 2 hours of footage.
Isn't there a custom recording section within options which lets you enter the amount of minutes you want to record to disc?
here you are,from the review of your recorder it mentions adjusting recording length.
"The DMR-EH50 offers four standard recording modes which give you between 1-8 hours recording onto single sided media, as well as a flexible recording mode that'll adjust data rates to give you the best possible rate based on the amount of space available on a disc"
http://www.cnet.com.au/dvdpvr/dvdrec...d=pt_panasonic