Dvd Burner question

[phillyman36]

Hey can some explain the different writing strategies of dvd burning? I was reading an article and this caught my eye

Like most of the DVD writers we've looked at lately, the SH-S162L can write to both DVD+R and DVD-R media at 16x. At this speed it took the drive a little more than 6 minutes to write an entire 4.7GB DVD. The SH-S162L also performed pretty well with DVD-RAM discs. However, its Z-CLV writing method put it at a disadvantage when writing to DVD+RW and DVD-RW media. The SH-S162L was able to redeem itself somewhat in our double layer DVD+R recording tests. Thanks to its 8x writing speed, the drive took about 19 minutes to burn 8GB of data.

http://www.cdrlabs.com/reviews/index.php?reviewid=285&page=Conclusion

Whats the difference between the Z-CLV and P-CAV? Is there a difference when using dvd-r or dvd+r?

 

[Tarrant64]

I think P-CAV is actually faster than Z-CLV. However I'm pretty sure it all comes down to the speed you're burning at, and the media you are using. CAV when burning uses a constant RPM, while CLV varies depending on the zone/region it is burning, and CLV also varies depending on what DVD you are burning(DVD+/- RW, DVD-RAM).

 

[phillyman36]

So it has nothing to do with quality just speed?

 

[Tarrant64]

Don't quote me or anything. But for the different types(CLV and CAV) it's mostly speed that varies between the two and the methods used to burn those dvd's. Now...in my experience different media yields different results. I am not sure what you are referring to as quality when it comes to which one is better. Are we talking movies, etc? Or data and what not.