Basically, it doesn't - it's only relevant if you have a PC DVD
With a standalone DVD recorder, you're recording video in real time,
so you never need to burn outside the normal (1x) speed range.
>i realise that 4x indicates the disc can be burned at 4 x normal speed (but
>what's normal in a dvd-r)
Normal is up to (roughly) 10 megabits per second, which equates to
about an hour of video per disc.
>but my dvdr uses 1, 2, 2+, 3, 4, 6 hour recording compression (doesn't
>indicate the actual burning speed, but i would like to burn these at 2 hour
>so how does these 2 methods equate?