Other Listed Compression Question

[noapprsn]

I was hoping someone could help me out with this as searching hasn't yielded an answer.

I've been using the most recent version of DVDFab v8 to make backup copies of a large amount of DVDs I purchased from a liquidation sale. They range in age from a just a few weeks to several years old. I typically make the backup using full disc mode. I understand the difference between the DVD5 and DVD9 selection (I think) in that the DVD5 selection will cause DVDFab to compress the disc itself to fit in the amount of space available on a single layer disc.

My question is in regards to the DVD9 option. I was under the impression that this option is for copying the disc with NO compression. However, many of the discs I've gone to back up show a compression percentage and seem to indicate the disc will be compressed. (For example, I had one disc and it listed 43% 18.24gig -> 8100MB)

Am I correct in assuming that even though I selected DVD9 it IS compressing the ripped data? If so, why is this? Is it something to do with the type of protection? Is DVD9 technically not a "No Compression" option but rather similar to DVD5 and it "Fits" to a Dual Layer Disc? This would make sense if it had to do with the copy protection on the disc and said protection was fooling the program into thinking there really was 18 plus gigs on the disc.

I've noticed that this happens more on my newer movies. Additionally, as a side note, I figured I was using an outdated version and purchased the DVDFab v9 and in almost all instances, this did not happen with the same movie.

Any thoughts? I'm just curious.

Thanks in advance.

[signals]

The incorrect size display is indeed a function of disc protection. DVDFab v8 is not updated for new protections as often as v9, and the free version of DVDFab lags behind the registered version in protection fixes. Be sure to set PathPlayer in Common Settings to the "Always Enable" mode (which is the default). If you purchased DVD Copy, you can use the license on v8 or v9 (or both).

DVD9 is the output size, and the maximum 'legal' size for a DVD-Video compliant disc. Thus it could normally be considered a "no compression" mode, but DVDFab will compress any content that exceeds whatever you have DVD9 defined as in Settings to fit. Merge mode can generate content that requires compression to fit on a DVD9 (e.g. a single disc DL copy of Schindler's List), and a very few standard discs may exceed an 8100MB setting for DVD9 size.