How does DVD Decrypter compress 6 G into 4.2 G???

[Gabriel]

I was copying a movie today with DVD Decrypter that uses 6.6 G on the original with widescreen, fullscreen and extras. I tried to select only widescreen to get down to 4.3 G and couldn't do it. DVD Decrypter defaults to the largest selection, which, in this case, was full screen. After several tries I gave up and copied the disc figuring that I would get only the full screen version. I got Widescreen, Full Screen and all the extras in 4.2G.

Maybe this has already been answered but I don't know how to phrase a search to find the answer. I don't understand how this is possible without a loss of picture quality. Anybody have any ideas?

I've only done about a dozen movies DVD to DVD-R and most were under 4.3 G so no problem. Is this just a fluke or is something happening that I don't understand? Where did that extra 1.7 G go?

[Faceman101]

DVD Decrypter does not compress the movie. Are you positive it copied the complete disc and not just one of the movies?

[Gabriel]

I didn't play the whole copy disc, but I did check and both widescreen and full screen versions plus the extras appear to be complete (I did skip searches through them). I don't understand how this is possible. One version was taking up about 2.6 G and the other was 3.4 +/-. I'm sure not unhappy because I got the result that I wanted but I don't understand how. Another thing I don't understand, the widescreen version was 2.6 and the full screen was 3.4. It seems that it should have been the other way around. However, I was able to decrypt each one separately and play them on the computer so I'm sure that the widescreen used less space than the full screen.

[adam]

Well it seems that something must be missing somewhere. DVDDecryptor simply rips the files that you tell it to off the disk. If filesize decreases, then you missed something.

I suppose its always possible that DVDDecryptor miscalculated the total filesize of the disk, but I have never heard of anyone else experiencing this bug.

Actually, a fullscreen movie should take up more space than the widescreen version. With widescreen, a large portion of the screen is taken up by black bars. A fullscreen version has many more pixels that must be encoded so it requires a higher bitrate to achieve the same level of quality.

[Dragonsf]

Anamorphic wide-screen should have the same size properties as fullscreen!