I'm quite new to this technology.
I'm with the DoD and am interested in technology of DVDs.
Specifically, if I wanted to write a DVD, high quality, large amount
of information, approximately 2, 2 1/2 hours of nothing but classes on
this.
With my DVD writer, I would get about an hour at VHS quality, I guess
I
wanted to find out what and how the big manufacturers go about
creating
DVD-9s to be duplicated.  I could not find DVD-9s anywhere to be
purchased
so this must just be for the big manufacturers only to use.
I've nearly exhausted myself researching this. Who uses this so
I can find out how to go about purchasing hardware is so needed. 
If any information is available I would sure appreciate the help

Hi shades1,


Thanks for an interesting question.


I was unable to find somewhere that sells dvd-9 burners, but I did
find somewhere that will make dvd-9 discs for you.  Contact Triple
Disc for a quote for your specific project:
URL: http://www.tripledisc.com/general_pages/contact.html

Additionally, Triple Disc should be able to tell you if there's any
conceivable way to obtain a dvd-9 burner.


Another possible solution is 2-sided dvd-5 media.  As Audio Interval
Designs explains, "What about those 9.4 GB DVD-Rs I see advertised? 
These are basically two DVD-5s sandwiched together- one on each side:"
URL: http://www.aidinc.com/features/dvdfaq.asp 

Double-sided dvd-5 media can be purchased at buy.com, but it looks a
bit pricey:
URL: http://www.buy.com/retail/product.asp?sku=1030271


From the extremely useful DVDRHelp pages, I found out that "No DVD
Writer supports the dual layer DVD-9 format and there are no plans for
any such writers either (a DVD-9 is basicly two pressed plastic DVD-5s
pressed together, they are not burned):"
URL: http://dvdrhelp.com/dvdripping

DVDRHelp also has a guide to reconverting a dvd-9 to fit on a dvd-r:
URL: http://www.dvdrhelp.com/forum/userguides/141024.php#dvd9


A mother lode of information about dvds in general:
URL: http://www.dvddemystified.com/dvdfaq.html

         
I hope you find this information useful, and feel free to request    
clarification.  If you do require clarification, please allow me to
provide it before you rate this answer.                
                 
Hoping I was helpful,                
                 
not_you-ga              
              
              
Search Strategy (on Google):  
"dvd-9 bulk stamping"
"making dvds faq"
"dvds 9.4 media buy"
"dvd burning 9.4"

I know this was a very difficult question to answer, you have provided
me more options that I can check into which I would not have thought
of.  Thank you for
your time

all the dvd-9's ive seen available were either "authoring" (very
expensive) versions, or are actually pressed dvds. It's pretty hard to
come by consumer grade (or at least consumer grade priced) DVD-9
media. DVD-9 isn't even that much better than normal dvd-r anyway,
since its double sided, you would have to flip the disc over to record
more video.

In any instance, something must be going wrong if you can only get an
hour of vhs quality video into the 4.7 gigs accorded by modern dvd
recorders. Only recently did DVD manufacturers start making good use
of dual layer 7gb DVD discs, and even then, a 2 hour "feature
presentation" still almost always fits within 4GB, at significantly
higher quality than VHS. Tell me, are you storing these files as DVD
video, or as a data cd with some inferior video codec?

Your answer made me go pull out our DVD manual - I made one mistake in
my
question - We have a Pioneer DVD Recorder PRV-9000 - under the manual
it
has that we can use DVD-RW on a manual setting for up to 360 minutes
for
less quality - 120 minutes for the same quality as an SP recording -
and
61 minutes for the highest quality - for a DVD-R there is two settings
-
high quality and standard - now I am really new to all this and I have
done only two dvds using DVD-Rs.  I work for a Video Services
department
and within our University, eventually we will be going to DVD
authoring,
of which we do have a couple of discs, however, they are only 4.7GB.
To answer your question, it would be DVD Videos and not data (that
will come later) Here's what my supervisor has asked of me: He wanted
to know if we could fit 8 hours of classroom instruction on one cd
with basically the same quality as the movie cds.(don't laugh too
hard) This is why I am very interested to
find out where I could go to purchase dvd-9s, or pressed DVDs or
hardware through big businesses, not at consumer prices.  Or do they
have authoring DVDs that are above 4.7 GB that I have not even tried
to look for as yet.  I'm leary about telling professors that they have
to flip over dvds for more video on the
other side but if this is what it will take to run videos then for now
that would have to work.  One more note:  we do have other
alternatives than just
taking a DVCPRO digital video tape and pulling it into our DVD writer,
we also
could use DVDIT for authoring dvds - I hope I'm asking the right
question, thanks for your prompt response

Hi I was actually looking for DVD-9 media for myself and have found a
dealer. You should try this website
http://www.cddimensions.com/cd-r_media/vrb-94171.asp for DVD-9 media.
I believe these are the 9.4 GB media you are looking for.  Goodluck.

DVD-9 is now available for consumers as well (double layer)

http://www.cdfreaks.com/article/142

There are LOTS of mistakes in the answers to this question.  Let take
a moment to review the available DVD standards.  Please keep these in
mind when reading the above material.  The use of terms DVD-# is often
listed incorrectly in the above answers and comments.

DVD-5  Is a single sided single layer 4.7gb disc
DVD-9  Is a single sided dual layer 8.54gb disc
DVD-10 IS a dual sided single layer 9.4gb disc

Sony is coming out with a dvd-9 dvd writer(they tell me)in about in to
2-4weeks..>Staples has a display on it....>It's going be able to write
8.5GB on 1 side of a double layer dvd+r & dvd+rw I
believe.....>helper65