Bitsetting -r's

[Marty2003]

This just occurred to me. We all know +r's can have their booktype changed. This seems to solve compatibility problems with some players. -r's can't be bitset because the booktype area is already imprinted on the disc. -r's apparently have better compatibility even without bitsetting. Wouln't it be possible to create uber-compatible media by having DVD-R's manufactured with a ROM book type? I'm not sure if burners actually use the booktype to determine if a disc is recordable or not, but I can see how this might cause problems with some burners, but it should be somthing fixable with a firmware upgrade. My burner can tell the difference between a +R bitset to ROM and an actual DVD-ROM. I favor +R's myself so this doesn't really make a difference to me, but any ideas why they don't manufacture specially labeled (and higher priced:P) DVD-R's already bitset?



And if this idea takes off, I'll always have this post to prove I thought of it first

[Skith]

If your goal is to accomplish the same thing bitsetting a +R disc to -ROM, the disc would just report as a DVD-ROM, and would be treated no different than a regular DVD-ROM or a +R bitset to a DVD-ROM.

Some driver (computer or standalone) check to see what kind of disc is inserted, and have a set of instructions to follow for specific types. Think of a simple set of IF statements:

If DVD-R
  do ....

IF DVD+R
  do ....

IF DVD-ROM
  do ....

Some drives just stop dead if they don't recognize a disc type.

Example, using the above, a +RW disc is inserted.

The goes through its checks, and does not find a match. The drive does not know what to do, since there is no 

IF DVD+RW
  do ....

A +R/RW/DL bitset to DVD-ROM will basically show up to the player as:

IF DVD-R
  does nothing, disc is set at DVD-ROM

IF DVD+R
  does nothing, disc is set at DVD-ROM

IF DVD-ROM
  continues to read the disc as a pressed dvd-rom

The above is my understanding of what bitsetting does. I hope that makes some sense.

[lordsmurf]

No.

[Josef K]

No.

Another accurate, if extremely succinct, reply but quite accurate.

+ can be bitset, - can not.

[Marty2003]

So I'm guessing no one actually READ my post?

[lordsmurf]

I read it.

No.

[Captain315]

I have an NEC 3500a and I'd like to set the booktype to DVD-ROM if possible. Just don't know how to do it.

[lordsmurf]

I have an NEC 3500a and I'd like to set the booktype to DVD-ROM if possible. Just don't know how to do it.

Only "+" formats can be bookset, because the "-" formats do not need such things. They are officially supported by the DVD Forum, and do not need to "trick" the player.