Circulal track marks on dvd?

vbimport

#1

Hi
I was just wondering why I can clearly see the tracks where laser has burnt data on my dvd, how come not all other dvd that I get from friends have the same track marks after they have burnt in on their writer, is it the cd or their writer?

Could some one tell me?


#2

Is this on your BURNT discs? Sounds like your DVD burner’s laser powers completely down between tracks or at shift points. Might need a firmware upgrade to sort that out - do these weird-looking discs play ok in your set-top box?


#3

bostonflunkie the track marks can be the result of a write speed change, this is especially visible when the writer uses the so-called Z-CLV write method. Nothing to worry about as it’s normal and doesn’t affect the readability of the disc.


#4

yup. ZCLV can causes banding marks. You’ll be able to see rings of a certain shade and rings of other shades.
like this…
Note: This is a fully burnt disc.