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1. Re: Dual layer DVD -R vs. +R
Bill Hunt Aug 27, 2010 12:23 PM (in response to Danielpremiere)Nowadays, there is less reason to be concerned, whether one uses -R, or +R, BUT depending on the player used, there could still be residual problems. It was more of a player issue, and newer ones seem less sensitive to the differences. Older players, will possibly still have a problem.
Also, all DVD certified players must play DL discs, BUT none are certified, and required to play ANY burned DVD-9's. Most will, but some just will not, and often the -R vs +R type do not make that much difference. The certification is for commercial, replicated/stamped DVD-9's, like most commercial movies.
I am not familiar with the JVC brand. They might be great, or they might not. Some suppliers just buy the cheapest disc that day, and rebrand them, like Memorex. There are many utilities, and even the free burning utility, ImgBurn, that will tell you what lurks below the JVC logo.
If you are doing these DVD's for yourself, I'd just check with my players. If they are for clients, then a bit of research might be required, as playability may well rest on the exact equipment used. I test on six different players, from bargain basement to esoterics, and have never had any returns, but part of that is probably luck with regards to clients' equipment. Did have one client, whose player would not handle ANY burned DVD-9's, so I just did a multi-disc set for them.
For DVD-9's, I always use Verbatim DL +R's.
Good luck, and wish that there was an iron-clad answer. However with the variations in clients' players, it can be impossible to know, until the discs are tried.
Hunt
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2. Re: Dual layer DVD -R vs. +R
Danielpremiere Aug 27, 2010 3:56 PM (in response to Bill Hunt)Hi Hunt,
Thanks for the reply! Well I originally got the JVC discs as they have now merged (?) with Taiyo Yuden and I was trying to get the most reliable brand! The +R versions were my Verbatims! Checking the disc origin on ImgBurn, reveals Taiyo Yuden as manufacturer. Strangely though, I cannot seem to locate any stockists of these JVC discs (in the UK) and the place where I ordered them has run out.
All the discs (JVC/Verbatim) seems to burn OK with my new Plextor drive. There was just the query over the difference in layer break point between +R and -R.
What I was originally going to say in my post, and this was related to my last post - to which nobody has replied - if I use the layer break point on my correctly burned DVD DL as the basis of the break point when I create DDPs (using GEAR) which do I use, the -R or the +R?!?!
Hope you can help
Thanks
Daniel
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3. Re: Dual layer DVD -R vs. +R
Bill Hunt Aug 28, 2010 12:40 PM (in response to Danielpremiere)Daniel,
I cannot comment on the Replication Masters, and the house's preferences. I'd contact them directly, to see if they prefer one vs the other.
Also, Neil and Jeff (or others) might have some insight into this for you.
Good luck,
Hunt
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4. Re: Dual layer DVD -R vs. +R
John T Smith Aug 28, 2010 12:51 PM (in response to Danielpremiere)I will GUESS that the layer break is in a different place due to the (whatever they are) "slight" differences in how files are allocated and written to -R versus +R dual layer
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5. Re: Dual layer DVD -R vs. +R
Danielpremiere Aug 28, 2010 4:03 PM (in response to Danielpremiere)Hi John,
Thanks for the thoughts. I had assumed that the difference must be something to do with the fact that +R has *slightly* more capicity than -R. I will read the long document regarding GEAR's calculations on layer breaks, which I was hoping to avoid!
Daniel



