I want to burn a few movies in a DVD5 4.7 GB , but every time I try to add videos to it, I am allowed to add only 4464 MB. If we calculate 4.7 GB, it turns out to be 4812 MB. So why are we not allowed to use all the disk space to write the video files. Where are the rest 348 MB alloted to.
Quote:DVD disc manufacturers love to use marketing terms and sell their discs as 4.7GB discs, but this is not true -- the 4.7GB is calculated by using so-called "Japanese gigabytes", where the power of calculations is 1,000 instead of 1,024 (and 1.024 is the correct way to calculate everything in computer world -- so, 1024 megabytes == 1 gigabyte).
@herbsman : You said its 4.37 GB, but its clearly mentioned on the DVD cover that it is 4.7 GB...
@LOCOENG : Even if it is calculated as 1GB=1000MB, it comes out to be 4700MB in a 4.7GB disk. But I am allowed to write only 4464 MB in a DVD Video mode.
here you go loco i read it and found this through the search
Quote:cgram7
Newbie
29. August 2004 @ 13:26 Report an offensive post
Keep in mind that manufacturers quote the capacity of a writable DVD disc in decimal (base 10) rather than binary (base 2) notation so a 4.7 GB disc stores 4.7 billion bytes [4:700,000,000 bytes ÷ 1000 = 4,700,000 KB ÷ 1000 = 4,700 MB ÷ 1000 = 4.7 GB] . Expressed in binary notation (as is typical with CD-R, CD-RW and most operating systems) the same disc has a capacity of roughly 4.38 GB [4:700,000,000 bytes ÷ 1024 = 4,589,844 KB ÷ 1024 = 4,482.27 MB ÷ 1024 = 4.38 GB] .
@ go4saket: although it says 4.7 gig, you really only have 4.38 gig.The other 400meg is used by the manufactyrers to encrypt there own data into the disc, like what the disc reg is and such.
I also notice you mention burning to 4464, that is way to far.To get a burn that way you are in the area where the dye is the most uneven and all you are going to get is a disc with a 30% chance of playing if the errors dont get you 1st.Try cutting it down to a more safe limit like 4300
