Does size matter

[Garry7]

I was ripping some anime DVD to ISO and suddenly discovered that not all of the ISO files were the same size as the actual disc size as reported by my OS (Window 7).

It's a hell of a lot of anime I've ripped so far and would hate to go through all of them and have to redo them. Should I be concerned that some aren't the same size? The most recent one (and the one I just happened to notice) was off by 9/100 of a Gig. I know I'm checking everything I want because I'm ripping them to a Terrabyte HDD and wanted a perfect 1:1 copy with no compression. Now I have my doubts. For the hell of it I used AnyDVD's ripping ability and it does show up as the same size as disc

What gives? Where are the extra bits of missing data? Does it matter?

Thanks for any help or opinions.

[vze2mp9g]

Originally Posted by Garry7

I was ripping some anime DVD to ISO and suddenly discovered that not all of the ISO files were the same size as the actual disc size as reported by my OS (Window 7).

It's a hell of a lot of anime I've ripped so far and would hate to go through all of them and have to redo them. Should I be concerned that some aren't the same size? The most recent one (and the one I just happened to notice) was off by 9/100 of a Gig. I know I'm checking everything I want because I'm ripping them to a Terrabyte HDD and wanted a perfect 1:1 copy with no compression. Now I have my doubts. For the hell of it I used AnyDVD's ripping ability and it does show up as the same size as disc

What gives? Where are the extra bits of missing data? Does it matter?

Thanks for any help or opinions.

That really depends on the extras the DVD has on it or doesn't have on it. All the ISOs won't be exactly the same size. If you doubt one of them, all you have to do is play it with a stand alone (software) player like TMT or any of the others and if it plays back to your satisfaction, then it's okay. Also, remember that every DVD doesn't have the same playback time either. One DVD could have a total playback time of 90 minutes, and another has 120 minutes of playback time. One will be longer than the other. This is only my own two cents worth.

[Garry7]

Originally Posted by vze2mp9g

That really depends on the extras the DVD has on it or doesn't have on it. All the ISOs won't be exactly the same size. If you doubt one of them, all you have to do is play it with a stand alone (software) player like TMT or any of the others and if it plays back to your satisfaction, then it's okay. Also, remember that every DVD doesn't have the same playback time either. One DVD could have a total playback time of 90 minutes, and another has 120 minutes of playback time. One will be longer than the other. This is only my own two cents worth.

Oh, I appreciate your two cents. Thanks.

But maybe you're misunderstanding my concern. I KNOW that all of the DVDs will not be the same size .... what's concerning me is the fact that the ISO file size is not the same size as the disc that I just ripped. Perhaps I'm thinking wrong in my thought that the ISO should be the exact size as the DVD? I just assumed as much since the majority of my DVDs that I've ripped ARE the same size as the corresponding ISO.

I think I'll take your advice and view one to see if anything is missing or messed up.

Thanks again.

[FurryGuy]

I'd bet that the DVDS that have size differences are ones that have extra files/folders other than AUDIO_TS and VIDEO_TS. CloneDVD doesn't copy any files or folders other than those needed for video DVDs, the extra files/folders are ignored when making a back up. I've seen a few DVDs that had enough "extra" files that the studio had to create the DVD as dual layer, the video content easily fit onto a single layer blank without any compression or removal of audio/video streams.

Another factor for differing sizes are the DVDs that do not have an AUDIO_TS folder, CloneDVD creates one if not present in the original. Just a few bytes, but it is a size increase.

So to answer your original query, ISO size differences are not something to be concerned about.

[just curious]

Besides the typical VIDEO_TS & AUDIO_TS folders some dvds contain games, .pdf files etc. that will only be included if you rip with CLONE CD.

If the original dvd only has VIDEO_TS & AUDIO_TS folders and you rip with CLONE DVD without compression USUALLY the rip size matches the original.

From time to time I've ripped single layer dvds with VIDEO_TS & AUDIO_TS folders with CLONE DVD where the original might be 4.28 GB in size and the rip is 4.27 GB in size even if I manually add a AUDIO_TS folder

Same with dual layer dvds. Original might be 6.8 GB but the CLONE DVD rip may end up "slightly smaller" even after manually adding a AUDIO_TS folder.

Even so, the dual layer backup played fine!

Note to FurryGuy "Another factor for differing sizes are the DVDs that do not have an AUDIO_TS folde"r, CloneDVD creates one if not present in the original"

I just ripped several dvds with clone dvd that just had a VIDEO_TS folder and the destination folder when rip was done just had a VIDEO_TS folder. I manually added a AUDIO_TS folder. Is there a option in CLONE DVD to automatically add a AUDIO_TS folder if the original dvd lacks one?

Dvd Shrink has an option to automatically add a AUDIO_TS folder to the rip folder destination if the original dvd has none!