Does on-the-fly copying really result in lower quality?

vbimport

#1

One of the options that you can enable in Roxio Creator DE is “Stage to hard drive for better quality (slower)”.

So does that mean if you do an on-the-fly copy of a CD or DVD, it will be lower quality? Why is that?


#2

When CD writers first became affordable to the great unwashed (yeah, that’s me :slight_smile: ) I used to do on the fly copying all the time with no quality problems; the only problem that did crop up occasionally was making coasters because the drive couldn’t read the source disk fast enough to feed the writing software (normally due to a dirty/scratched source disk). This was in the days before burn-proof systems so if the writer ran out of data the write failed.

I would guess that it is the same with DVDs, but don’t quote me :stuck_out_tongue:

DVDs and CDs have a built in error correction strategy, so the occasional bit that is mis-read shouldn’t affect the whole.

Having said that, my gut instinct is always to copy to the hard-drive first; I don’t know what effect pausing and re-starting a write (i.e. actually making use of the burn-proof feature) has on the quality of a DVD, but I’m thinking it’s got to be worse than a straight one-time write.

Sláinte

Mark


#3

As long as it doesn’t cause buffer underruns quality is the same.

And in modern drives even buffer underruns might not be a big deal. But if you intend to write with constant underruns, better scan the PIE/PIF levels to see how it fares.

I also have a theory that underruns might make it more difficult to read/less compatible on some drives, but that’s just an unbased theory.


#4

As long as the CD/DVD Drive or HDD feeds the burner info faster than the burner is burning there is no difference. Say you have a 16 reader and you burn at 8x then no problem burning a DVD…