this post was submitted on 17 Apr 2026
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I downloaded the movie after seeing it in theatre to once again enjoy it from the comfort of my home. Seeing 2160p, I thought it's going to be a webcam rip but the title says webrip. Where is this leaked from that has Dolby Vision on a movie still in theatre?

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[–] empireOfLove2@lemmy.dbzer0.com 96 points 2 days ago (2 children)

Its not unheard of for some scene peeps to get access to the raw digital files played in some theaters. It's uncommon because of the difficulty in acquisition and then sanitizing it so they can't figure out who ripped it, but does happen.

[–] quediuspayu@lemmy.dbzer0.com 43 points 2 days ago (4 children)

I'm really curious about the sanitation process. About the methods used to identify each copy, it has to be one of those cases of security by obscurity. I think it is a fascinating topic that I know nothing about.

[–] empireOfLove2@lemmy.dbzer0.com 42 points 2 days ago* (last edited 2 days ago) (1 children)

IIRC digital cinema files are usually DRM locked in a special format and are also imperceptibly watermarked somewhere throughout the video. They're distributed to cinemas usually on physical hard drives/SSD's. I don't know anything about the security details other than that, off to YouTube it is!

[–] gajahmada@awful.systems 18 points 2 days ago (1 children)

I think I also remember from a reddit thread many moon ago that they need to be internet connected somehow, and can only be played on a scheduled time slot.

[–] BlueEther@no.lastname.nz 16 points 2 days ago

I know a cinema manager, and yes they (new releases) all need internet acces and are time locked aswell

[–] Chulk@lemmy.ml 25 points 2 days ago (1 children)

Same, it makes me think about Reality Winner being caught because they knew which printer the documents came from.

The pages from the NSA's printers came with invisible tracking dots. This is a common feature in modern printers for forensics investigations

https://www.cnet.com/news/privacy/reality-winner-nsa-leak-russian-hacking-printer-tracking-dots/

[–] mecen@lemmy.ca 5 points 2 days ago* (last edited 2 days ago) (1 children)

On any color printer there are yellow dots, which have plenty of data.

[–] swab148@lemmy.dbzer0.com 3 points 2 days ago (1 children)

There's also ways to obfuscate them.

[–] tomiant@piefed.social 1 points 1 day ago

Couldn't one just take a B/W photocopy?

[–] turdas@suppo.fi 13 points 2 days ago (1 children)

It's basically impossible to detect well-designed steganography (invisible watermark) unless you have access to the algorithm that writes or reads it, or multiple comparable copies of the media.

[–] quediuspayu@lemmy.dbzer0.com 11 points 2 days ago (1 children)

That is what makes it so fascinating to me. Do they work with the original files? Is it possible to capture the decoded data at some point before the projector?Is the watermark still present there?

[–] turdas@suppo.fi 8 points 2 days ago (1 children)

Presumably the watermark is just going to be intractably encoded into the video file that's shipped to the theater. Doing it any other way wouldn't make sense.

[–] mecen@lemmy.ca 6 points 2 days ago

If that was designed by me I would change slightly colors of some insignificant details across movie to find exact copy

[–] ClassIsOver@hexbear.net 5 points 2 days ago* (last edited 2 days ago)

Xbox apparently used to encode a console's serial number into the loading animation of the Xbox logo in the corner of your screen to figure out who broke NDAs within the company.

[–] hunt4peas@lemmy.ml 2 points 2 days ago

Hmm. That's a nice piece of info you got there. Thanks.