On Mon, 25 Jul 2005, Ray Cole wrote:
> I realize this is a strange question...but if you eject the disk when it
> starts skipping, and let it cool for maybe 5 minutes, then insert the
> disk again and fast-forward to that part of the movie does it continue to
> skip at the exact same place, or does it play fine for a while again and
I don't know - I haven't had a DVD skip on me :)
What I have had happen is a DVD player wear out or otherwise fail
mechanically - it wouldn't reliably focus on the 2nd layer (most
commercial DVDs seem to be dual layer). Solution was to pop $50 and
get a newer DVD player ;)
> then start skipping? The reason I ask is I have seen DVD media 'warp' a
> little after it has been in the player, specifically after I've applied a
> paper label to the disk. Evidentally paper labels make it such that the
AIIEEEEE - paper labels, as you're discovering, are a very bad idea.
I'm surprised, to tell the truth, those kits are still on the market.
> DVD can't dissipate heat quite as efficiently and can cause the disk to
> warp. I have a number of DVD disks that have a paper label on them and in
> one of my DVD players the heat build up causes it to warp just a bit. In
> fact, if I put the hot DVD upside down on a flat surface I can see that
> it has cupped...and can push down on the center.
Not just heat but balance and mechanical wear/tear. Paper is
lightweight
but it's not 0 and can cause the disc to be less than perfectly
centered/weighted. More (offcentered) weight can can problems.
I think it's less that the polycarbonate substrate is "melting" but
rather is being pulled out of shape by the tension of the label.
As the paper/adhesive heats up it exerts tension on the surface of the
disc causing the the disc to 'warp'.
> That is why nowadays I use the mini-CD labels to label my DVD's. They cover
Even better use a Sharpie Fine Point permanent marker. BEST of
all use inkjet printable media. I've long since switched to using
inkjet printable media and an Epson R300 (or R200) printer. There's
little or no price premium for injket printable media - and the results
look really good. Even if you don't use an inkjet printer the
printable surface 1) doesn't warp, 2) works very well with marker
pens if you'd rather write a handwritten note.
> only about half the radius of the full DVD-sized labels so it allows heat to
> dissipate quickly. And they're cheap...5 to a standard page :-)
OR there's less paper/adhesive "pulling" on the surface of the media ;)
> It probably isn't your problem, but I thought I'd mention it just in case...
Thanks - I agree it's probably not the problem. My hunch is that the
media or burn was less than perfect. We'll see if more testing
turns up some clues as to what is a likely candidate.
Cheers,
Steven Schultz
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