What is the real size of DVD?

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bang

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Nobody can answer this! What is is the size (in bytes) of a single layer dvd-r and can it be overburnt like a cdr? What is the size (again in bytes) of a dual layer disc?
No site on the net has the exact size only a nice range (3.95,4.36,4.4,4.7,4.73 etc).

nightfly

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Several sources on the net list the capacity as 4.37 gig. That seems to be about what I get, so I go with that. Like hard drive capacity, advertised and real world differ a bit, and never to the customer's advantage.

Biosgain Suspended due non-functional email address

dual layer is about (i know you asked exactly) 3.7GB on 2nd layer.

Email me if I don`t reply to a previously answered post. I`m probably fishing :)

dRD

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I hate titles 14 product reviews

Exact details:

DVD-5.cfm" class=korostus target="_blank">http://www.afterdawn.com/glossary/terms/DVD-5.cfm
DVD-9.cfm" class=korostus target="_blank">http://www.afterdawn.com/glossary/terms/DVD-9.cfm
http://www.afterdawn.com/glossary/terms/dvd-10.cfm (this is the dual-sided blank media they advertise as "9.4GB" -- nothing to do with DVD-9 - see above)

Petteri Pyyny (pyyny@twitter)
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bang

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Thanks for the responses, but I did ask exact (as in bytes, the way windows reports). It just seems that I am correct, nobody knows. the best I found was 4,734,720,000 bytes but I don't know whether it is correct.

A_Klingon

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Four Billion, Seven Hundred And Two Million, Nine Hundred And Eighty-Nine Thousand, One Hundred And Eighty-Two Point Twelve Bytes.

(4,702,989,182.12)

If you have to ask me how you can have twelve one-hundredths of a byte, I'll have to fib to you. :-)

No, seriously, it's just simple math:

DVD5 = 4.38 Gigs
4.38 x 1024 = 4,485.2 Megabytes
4,485.2 Megs x 1024 = 4,592,762.88 Kilobytes
4,592,762.88 Kb x 1024 = the above figure, 4,702,989,182 bytes.

I imagine there's a built-in bit of 'extra' space on each disc; no one knows how much exactly, I suppose every disc is different and I've never heard of 'over-burning' a dvd, or if it's even possible, but the above amount is supposed to be the least *guaranteed* amount of space.

Whoever invented the lying phrase, "4.7 Gig Capacity" should be shot.

-- Mike --

This message has been edited since its posting. Latest edit was made on 15 Dec 2002 @ 0:19