Backed up BD is SMALLER than the original?

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dilweegie
Posts: 3
Joined: Tue Apr 26, 2022 2:51 pm

Backed up BD is SMALLER than the original?

Post by dilweegie »

I backed up a Bluray which had a BDMV size of 23.12GB. The Decrypted backup BDMV size is only 5.94GB!

How is this possible? This wasn't an encode... I used the Backup option and selected Decrypt.
Woodstock
Posts: 10338
Joined: Sun Jul 24, 2011 11:21 pm

Re: Backed up BD is SMALLER than the original?

Post by Woodstock »

No real way to tell without the name of the disk. It is entirely possible to put "23GB" of files on a smaller disk, if you have a lot of redundancy of names.
dilweegie
Posts: 3
Joined: Tue Apr 26, 2022 2:51 pm

Re: Backed up BD is SMALLER than the original?

Post by dilweegie »

The Adventures of Ford Fairlane.
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dcoke22
Posts: 3117
Joined: Wed Jul 22, 2020 11:25 pm

Re: Backed up BD is SMALLER than the original?

Post by dcoke22 »

I don't happen to have that disc, so I can't check mine.

I'm not sure I exactly understand your scenario. You made both an encrypted and a decrypted backup of the same disc and got significantly different sized output?
dilweegie
Posts: 3
Joined: Tue Apr 26, 2022 2:51 pm

Re: Backed up BD is SMALLER than the original?

Post by dilweegie »

I inserted the disc. Chose the Backup option. Clicked "Decrypt" and let it go.

Why wouldn't the output be exactly the same as the disc itself? What is getting compressed? I thought a backup would be the exact same file size as the disc?
Ezatoka
Posts: 410
Joined: Fri Dec 06, 2019 6:55 pm

Re: Backed up BD is SMALLER than the original?

Post by Ezatoka »

And the ripping process finished without any error? (Silly question I know...)
shisha0505
Posts: 31
Joined: Wed Oct 09, 2024 10:18 am

Re: Backed up BD is SMALLER than the original?

Post by shisha0505 »

since i have a similar question (though i'm on Windows, not Mac) i'll ask here instead of opening a new thread
i backed up Ice Age 3 3D.
File size of the backup is apprx. 38 GB.
The STREAM folder shows apprx. 35 GB

On the other hand Windows Explorer shows the disc size as 46 GB and the STREAM folder on the disc shows 70 GB.
Can someone explain why?


PS and FYI: minimum title length is set to 0
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