DVDs 4.3 GB or 4.7 GB?

[snapware]

When authoring a DVD is it possible to put 4.7 GB worth of Data or only 4.3 GB?

[jimmalenko]

4.37GB.

https://www.videohelp.com/dvd.htm#1000

DVD-5, holds around 4 700 000 000 bytes and that is 4.37 computer GB where 1 kbyte is 1024 bytes* . DVD+R/DVD+RW and DVD-R/DVD-RW supports this format. Also called Single Sided Single Layered. This is the most common DVD Media, often called 4.7 GB Media.

* In the computer world is 1 KB data = 1024 bytes so 4 700 000 000 bytes / 1024 = 4 589 843KB / 1024 = 4482MB / 1024 = 4.37GB. See section 3.3 in the DVDDemystified FAQ here.

DVD+R/DVD+RW/DVD+R DL and DVD-R/DVD-RW exact sizes
DVD-R/DVD-RW = 4 706 074 624 bytes ( 4488 MB )
DVD+R/DVD+RW = 4 700 372 992 bytes ( 4482 MB )

[vitualis]

Yes, about 4.37 real gigabytes.

Which is about 4.7 "weasel" or "marketing" gigabytes.

Regards.

[waheed]

The same applies to other storage mediums, including floppy disks, USB memory sticks, and even Hard Disk Drives. Shocking isn't it; to see your 250GB Hard Drive only showing 232GB.

For some reason, CDs show their true capacity. A 700MB CD is actually 700MB.