800 MB on 700MB CD
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- nearestexit
Here's a strange one. I'm helping a friend with a CD package for his band. He brought the mastered CD over today and let me take the songs off of it.
Somehow, the CD had 800 MB of music on it. Yet the CD was a 700 MB CD. I don't believe the tunes were compressed in any way. I dragged and dropped them onto my desktop and they looked the same as when they were on the mastered CD.
Anyway, does anyone know how this is possible?
- Woolhouse0
perhaps not al the aiff file was copied of the mastered cd?
- spifflink0
its not. its going to create a temporal paradox that will unravel the very fabric of space and time and destroy the whole universe! granted that is a worst case scenario, the destruction might be localized, possibly to just our galaxy...
- Woolhouse0
See, now that was my second option, but I just had to wait on that one didn't I?!!!
- nearestexit0
Woolhouse, the CD i had was a 700 MB CD that contained 800 MB of music.
Anyone else have any ideas? Could this be one of those signs the apocalypse is fast approaching? Oh I hope so. Then I won't have to pay my taxes this year.
- MrDinky0
you HD space indication is not always correct
thats why when you make a CD, you make partition drive with accurate size of CD and burn it from there.
bigger the HD, bigger the differnce in correct file size
man.. no one does this anymore.. back in good old days when CD rom was the shit.. and hyper cards rocked
- nearestexit0
so you're saying that the 800 MB of data is not actually 800 MB?
I double-checked and it's actually 801 MB. The CD was definitely 700 MB. Damn, this kinda shit gives me headaches. I'll just call the dude who made this thing on Monday and let you all know what he did.
- MrDinky0
its not actually 800 its more or less about 650 or 675
how big is your HD?
- nearestexit0
No, i checked again. The files add up to 801 MB. As far as I know, when you look at the file size on a Mac, it's the actual file size. Not quite sure how you figure I have 650 mb...
But here is probably what the guy did, or something along these lines....
In April 2003, a few companies began announcing technologies that allow you to store larger quantities of data on standard CD-R media. Unlike DD-R and "ML" technology, special discs aren't required. The capacity and compatibility is different for each.
GigaRec (Plextor)
Increases storage capacity by 40%, allowing up to 1GB on a 700MB disc. The discs can be read on some unmodified CD-ROM drives. http://www.plextor.com/english/n…
HD-BURN (Sanyo)
Doubles disc capacity of an 80-minute disc from 700MB to 1.4GB. A firmware change is required before a drive can read the discs. Support for extended-length CD-RW media is planned. http://www.digital-sanyo.com/BUR…
Does it make sense to use these? The extra capacity is handy, but data is only useful if you're able to read it. Check the compatibility of the hardware you're going to use to read the discs.
- rabattski0
i only know that within the audio industry / cd presses the machines are able to write from start to end as opposed to your average burner at home. not sure if that's the reason.
- clw0
The extra space is probably from not adding the error correcting files that are needed for data files. These files aren't really needed for streaming content like audio/video. There's also something called overburn where you put more data on a cd than is printed on the label.
- Jaline0
The extra space could be other stuff, like the spaces in between songs or the lead in/out. But I've never been able to do that before.
I've had lots of issues with cd's and burning stuff.
- fusionpixel0
the easier way to find out is to ask your friend how he did it or where he got the CD from, then poste it in NT so we can do it that way too and be all cool and stuff
- Jaline0
yeah
- canuck0
You can overburn cds, but an extra 100mb seems a little crazy. So it actually says 700mb or whatever on the cd?
- ilrapa0
You and your friend r lucky.
Stop.
God bless u.
And your cds.
piss & luv.
- yurimon0
Your HD sometimes adds more memory whne you do get info.
for example. If you upload 800k
file to a web server it shows up as less.That is my guess
- acescence0
allow me to shed some light on the subject.
info on a cd is organised in sectors. audio cd's use 75 sectors per second of audio. 1 second of audio contains 176400 bytes. Since there are 75 sectors per second, 1 sector = 2352 bytes.
now, audio cd's don't need error correction, they just interpolate from the adjacent samples so they can use every bit for audio. this method would obviously not work for data, so only 2048 bytes out of a total of 2352 bytes in each sector is available for user data on a data CD.
because of this, an 80min. audio CD will rip to 807.5 Mb max, if you burn data onto a disc of similar size, you will only get 703.1 Mb on it.
ta-da
- Jaline0
i think you have demons
- meter0
i was going to say what ascence did. he is correct (see, i did learn something from the days of pirating Saturn games!).