How much undersize is acceptable with OPV?

[Harm]

Just ran a project with version 0.55 and 1 step CCE OPV.
Result came out 4,22 Gb in total. So this is nearly 500 Mb undersize.

How much undersize is acceptable do you think jdobbs? :(

[jdobbs]

4.22GB is not 500Mb undersized. The statement you sometimes hear that a DVD-R holds 4.7GB is a misrepresentation. The disc actually stores approximately 4.7 billion bytes. But a billion bytes and a gigabyte are not one and the same. A gigabyte is based upon binary numbers so it is actually 1024*1024*1024 (or 1,073,741,824 bytes).

Since the factual "gigabyte" is based upon binary numbers, the DVD will truly only store about 4.37GB. That means you have about 150MB of storage left and you are within 3% of the total amount of space available.

I believe that is acceptable and well within what should be expected when using OPV.

[Harm]

Thanks for your explanation jdobbs!

And just a little bit of fun:
4,22 Gb is 96,6% of 4,37 Gb so just outside your 3% ...... :D ;)

no really your explanation is satisfactory to me!

[jdobbs]

I computed it as 150 million is 3.2% of 4.7 Billion. Close enough ;)

[quantum]

Use bytes when computing capacity. No ambiguity that way. I think these numbers are correct (or close). I know I've done DVD-R's at 4,705,xxx,xxx.

DVD-R/w: 4,706,074,624
DVD+R/w: 4,700,372,992