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***GHDpro*** · 2009-06-05, 04:10

Are you sure you didn't put a Blu-Ray disc in the drive by mistake?

You can put roughly 4~5 GB of data on a single layer DVD and 8~9 GB of data on a dual layer DVD.

Of course with compression, you can fit much more data on such DVDs, but an ISO ripped from such a DVD will not be any larger than the disc it came from, unless you "unpack" and decompress the contents f the ISO.

And as (afaik) ISO or UDF doesn't contain any compression by itself, any compression would have to be in the content (ie: MPEG2 encoding in .VOB files for DVD video), not the container format itself.

2009-06-05, 04:10	Link #3
*GHDpro* Administrator Administrator Join Date: Jan 2001 Location: Netherlands Age: 45	Are you sure you didn't put a Blu-Ray disc in the drive by mistake? You can put roughly 4~5 GB of data on a single layer DVD and 8~9 GB of data on a dual layer DVD. Of course with compression, you can fit much more data on such DVDs, but an ISO ripped from such a DVD will not be any larger than the disc it came from, unless you "unpack" and decompress the contents f the ISO. And as (afaik) ISO or UDF doesn't contain any compression by itself, any compression would have to be in the content (ie: MPEG2 encoding in .VOB files for DVD video), not the container format itself.