8GB iso/image fits into 4.7GB DvD-r ?

[iShare_iCare]

Anytime you compress video onto a disc, you are going to get a loss of quality. End of story.

Either use a program like DVDShrink (as suggested) or buy BD25's.

Yes I know that.
Have you ever tried to extract windows xp iso image ?
I have noticed that some windows iso image that are burned in 700MB CD when extracted, they are more than their original size.
may be 1.5GB or so.
I have just one question to find solution
how they could compress 1.5 GB into 700MB.iso ?

[anon]

Have you ever tried to extract windows xp iso image ?
I have noticed that some windows iso image that are burned in 700MB CD when extracted, they are more than their original size.
may be 1.5GB or so.
I have just one question to find solution
how they could compress 1.5 GB into 700MB.iso ?

The installation files inside the i386 folder in the CD are compressed with the MSCOMPRESS algorithm, that's why they fit in the disc and have an underscore instead of the last letter of their extension.

[Skiz]

Anytime you compress video onto a disc, you are going to get a loss of quality. End of story.

Either use a program like DVDShrink (as suggested) or buy BD25's.

Yes I know that.
Have you ever tried to extract windows xp iso image ?
I have noticed that some windows iso image that are burned in 700MB CD when extracted, they are more than their original size.
may be 1.5GB or so.
I have just one question to find solution
how they could compress 1.5 GB into 700MB.iso ?

We already told you twice. It's compressed!

You are wanting to do the same thing with video. However, the video, when compressed will lose quality.

Windows isn't loading video onto the disc, they are loading data.

Got it?

[Quarterquack]

you problem is you burn media to disk, that is so 20 years ago.

Actually, that's his solution.

P.S. I don't really think anyone will get understand my comment, but that's the curse of a society that can differentiate between Disks and Discs. There, I explained it.

[iShare_iCare]

Yes I know that.
Have you ever tried to extract windows xp iso image ?
I have noticed that some windows iso image that are burned in 700MB CD when extracted, they are more than their original size.
may be 1.5GB or so.
I have just one question to find solution
how they could compress 1.5 GB into 700MB.iso ?

We already told you twice. It's compressed!

You are wanting to do the same thing with video. However, the video, when compressed will lose quality.

Windows isn't loading video onto the disc, they are loading data.

Got it?

Yes I got it.
So it's impossible.

[Appzalien]

Compression works by using similar stuff to identify all the same things so compression of written words is the best. Imagine a novel written and inside the novel the word "and" "both" "murder" and "Jane Sparticus" appear hundreds of times throught the book. If the compression algorithm assigns the characters "1a" as and "2a" as both, 3a as "murder" and 4a as "Jane Sparticus" and then uses them to indicate where those longer names go, then you can imagine why text compresses so well. Other things like video do not compress well cause they're not text and every frame is slightly different.
As mentioned above, if you peruse an XP disk you'll see alot of Cab files or files with a _ at the extension which are also compressed (controlpanel._xe instead of controlpanel.exe) and those and cab files often compress written program files which use characters that can repeat just like a novel. In fortran programming for instance the words "for" and "if" or "then" are used repeatedly in writing fortan so they compress well into cab files.