As in title, i’m just wondering whether it is possible to rip movie from cinema if one has got unsupervised access to cinema’s hardware. Maybe someone did that? I’m not talking about caming, i’m talking about making a digital copy of premiere material.
- Shadow ( @Shadow@lemmy.ca ) English45•4 months ago
My understanding is the media and projectors are heavily tied together with strict DRM. This is why you see cams with direct audio hookups, but not direct video rips
afaik audio hookups are recording of radio broadcasts for impaired not unauthorised rips of media used in cinema or recordings made using some tricks with wires and clamps.
- Darkassassin07 ( @Darkassassin07@lemmy.ca ) English35•4 months ago
Last time I looked at the topic (several years ago in a now deleted reddit post); someone had posted info on the projector system.
The media is delivered on a battery backed up rack-mount pc with proprietary connectors and a dozen anti-tamper switches in the case. If it detects meddling; it wipes itself. You’re not likely to grab a copy from there.
As the other commenter mentioned; the projector and media are heavily protected with DRM, encrypting the stream all the way up to the projector itself. You can pull an audio feed off the sound board; but you’re stuck with a camera for video.
Now i wonder what it does when battery dies, whether it wipes itself or not. And where it stores it’s keys, in TPM or in RAM or where.
- Darkassassin07 ( @Darkassassin07@lemmy.ca ) English9•4 months ago
Pretty sure the media itself is stored in ram, or similar volatile memory; so it wipes automatically on powerloss.
Friends in other comments suggested that the file is 100-300gb size, it’s quite a lot of RAM if you asked me, but not much for a harddrive. If i were to design this machnie would store the movie heavily encrypted on a harddisk and store keys in RAM. Sb ealier mentioned you need special keys from special compamy to decrypt it so it would be doubly encrypted, one key stored in RAM and another inputed by technican. Ofc if i were to design this i would try to make it piratable by introducing some “accidential” vuln.
- Norah - She/They ( @princessnorah@lemmy.blahaj.zone ) English2•4 months ago
Too many engineers involved, there wouldn’t be a single point of failure like that by design.
- Mubelotix ( @Mubelotix@jlai.lu ) English28•4 months ago
I think they hide information in the video to be able to find out where a leak came from
- stom ( @stom@lemmy.dbzer0.com ) English12•4 months ago
Ratatouille famously did this, with actual scene elements rather than digital watermarking.
There’s a scene with a poster in the background. Every copy of the movie had different digits on the poster, I think with a unique ID for each cinema they were sent to. When a leak came out they could check the ID and know exactly which avenue it was leaked from.
- foldor ( @foldor@lemmy.ca ) English3•4 months ago
You say Ratatouille did this famously. But I can’t find any references. Do you have some?
- spiderman ( @spiderman@ani.social ) English10•4 months ago
Yeah they got unique water mark these days.
Sounds reasonable, but they won’t be able to take it out, they would only be able to not send new movies there.
- Mubelotix ( @Mubelotix@jlai.lu ) English6•4 months ago
They also will be able to sue the enterprise behind the cinema
If it’s not a 3rd world country ofc.
- catloaf ( @catloaf@lemm.ee ) English19•4 months ago
You can do anything with unsupervised physical access. The signal has to be decrypted at some point: https://en.wikipedia.org/wiki/Analog_hole
- Banzai51 ( @Banzai51@midwest.social ) English12•4 months ago
Going that way is a great way to be prosecuted to the fullest extent of the law. Messing with their equipment is going not going to end well.
- Revan343 ( @Revan343@lemmy.ca ) English7•4 months ago
Not nowadays with the DRM they use. Back in the actual-film days it was doable, and called a telecine
- femtech ( @femtech@midwest.social ) English1•4 months ago
If they had reals still, sure. But I don’t think cracking the hardware is going to work.
- Flax ( @Flax_vert@feddit.uk ) English1•4 months ago
Don’t they have special projectors sent from the companies these days?