DVD player and CD-R/RW discs - Club CDFreaks

gladiator · 30-12-2001

I have a Panasonic DVD RV20, I know its not the best but hey, I got it for free. The problem I have is, it can play VCDs that I made with Nero on CD-RWs perfectly, same with CDs. Once I burn the same stuff onto CD-R's it refuse to play it.

Can someone give me some pointers? thanks

**Dee-ehn** · 30-12-2001

Does it have the problem with 1 specific brand of CDR's or all CDR's?

gladiator · 30-12-2001

All CD-R's, I've used 3 brands of CD-R. However I only used one brand of CD-RW

updiliman · 16-01-2002

i had the same problem as yours with my sony dvd player.
i searched through the web for this problem and i found out that most dvd players cant read cd-r's because of the dye that it uses (blue, gls, etc) and laser wavelength stuff. but i also read somewhere that if you use a cd-r with a silver dye, just like the commercial VCDs or audio CDs, it might work, but i havent tried this yet.
and most dvd players should be able to read cd-rw, like the dvd player models that we have.

but most 2nd generation dvd players should be able to read cd-r. (i think this is achieved by having 2 lens for the player, the other of which is for cd-r)

got this from cdrlabs.com:

Subject: [2-13] Can DVD players read CD-Rs?
(2001/11/28)
The only discs that a DVD player is guaranteed to read are DVD discs. Support for CD-ROM, CD-R, and CD-RW may be included, but is by no means guaranteed.

CD-R was designed to be read by an infrared 780nm laser. DVD uses a visible red 635nm or 650nm laser, which aren't reflected sufficiently by the organic dye polymers used in CD-R media. As a result, many DVD players can't read CD-R media. Some DVD players come with two lasers so that they can read CD-R. For a technical discussion, see http://www2.osta.org/osta/html/cddvd/intro.html and http://www.emedialive.com/EM1998/bennett3.html.

CD-RW discs have a different formulation, and may work even on players that can't handle CD-R media. If CD-R media doesn't work, try copying the disc to CD-RW instead (assuming your recorder supports CD-RW).

Some DVD-ROM drives may be unable to read multisession discs. In general, though, DVD-ROM drives (as opposed to DVD players) are able to read CD-R media.

If the box doesn't say that something is supported, assume that the feature isn't. Look for the MultiRead or MultiPlay logos, which indicate that the DVD player or DVD-ROM drive can read CD-R and CD-RW.

30-12-2001	#1 (permalink)
gladiator New on Forum Join Date: Dec 2001 Posts: 2	DVD player and CD-R/RW discs <a href='http://adstats.cdfreaks.com/www/delivery/ck.php?n=a13febf7&cb=INSERT_RANDOM_NUMBER_HERE' target='_blank'><img src='http://adstats.cdfreaks.com/www/delivery/avw.php?zoneid=30&cb=INSERT_RANDOM_NUMBER_HERE&n=a13febf7' border='0' alt='' /></a> I have a Panasonic DVD RV20, I know its not the best but hey, I got it for free. The problem I have is, it can play VCDs that I made with Nero on CD-RWs perfectly, same with CDs. Once I burn the same stuff onto CD-R's it refuse to play it. Can someone give me some pointers? thanks

30-12-2001	#2 (permalink)
Dee-ehn Administrator Join Date: Feb 2000 Location: On my chair Posts: 14,987	Does it have the problem with 1 specific brand of CDR's or all CDR's? __________________ Every answer is just a question away... My other hobby is photography. Come take a look at what I do! Help us fighting cancer! Hardware tools: Prime95, Sandra, MemtestX86, MBM, DFT CD/DVD: Smartripper, DVD Decrypter, DVD Shrink, ForceAspi Check your CPU wattage online! Linux: be root \|\| Windows: reboot

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30-12-2001	#3 (permalink)
gladiator New on Forum Join Date: Dec 2001 Posts: 2	All CD-R's, I've used 3 brands of CD-R. However I only used one brand of CD-RW

16-01-2002	#4 (permalink)
updiliman New on Forum Join Date: Jan 2002 Posts: 1	i had the same problem as yours with my sony dvd player. i searched through the web for this problem and i found out that most dvd players cant read cd-r's because of the dye that it uses (blue, gls, etc) and laser wavelength stuff. but i also read somewhere that if you use a cd-r with a silver dye, just like the commercial VCDs or audio CDs, it might work, but i havent tried this yet. and most dvd players should be able to read cd-rw, like the dvd player models that we have. but most 2nd generation dvd players should be able to read cd-r. (i think this is achieved by having 2 lens for the player, the other of which is for cd-r) got this from cdrlabs.com: Subject: [2-13] Can DVD players read CD-Rs? (2001/11/28) The only discs that a DVD player is guaranteed to read are DVD discs. Support for CD-ROM, CD-R, and CD-RW may be included, but is by no means guaranteed. CD-R was designed to be read by an infrared 780nm laser. DVD uses a visible red 635nm or 650nm laser, which aren't reflected sufficiently by the organic dye polymers used in CD-R media. As a result, many DVD players can't read CD-R media. Some DVD players come with two lasers so that they can read CD-R. For a technical discussion, see http://www2.osta.org/osta/html/cddvd/intro.html and http://www.emedialive.com/EM1998/bennett3.html. CD-RW discs have a different formulation, and may work even on players that can't handle CD-R media. If CD-R media doesn't work, try copying the disc to CD-RW instead (assuming your recorder supports CD-RW). Some DVD-ROM drives may be unable to read multisession discs. In general, though, DVD-ROM drives (as opposed to DVD players) are able to read CD-R media. If the box doesn't say that something is supported, assume that the feature isn't. Look for the MultiRead or MultiPlay logos, which indicate that the DVD player or DVD-ROM drive can read CD-R and CD-RW.