We would need to know how you go the Video from the camera to the DVD disks and in what Format the DVDs were recorded in.
If it made DVDs in the same format as commercial DVD films then the DVD player should open them
Quicktime will recognise many formats but not all .AVI and DIVX in particular.
Add-ons for Quicktime for some formats can be obtained.
Which app were you thinking of Editing in ?
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images." No, Seriously