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.

  • Darkassassin07@lemmy.ca
    link
    fedilink
    English
    arrow-up
    36
    ·
    edit-2
    3 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.

    • montar@lemmy.mlOP
      link
      fedilink
      English
      arrow-up
      14
      ·
      3 months ago

      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@lemmy.ca
        link
        fedilink
        English
        arrow-up
        9
        ·
        3 months ago

        Pretty sure the media itself is stored in ram, or similar volatile memory; so it wipes automatically on powerloss.

        • montar@lemmy.mlOP
          link
          fedilink
          English
          arrow-up
          4
          ·
          3 months ago

          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.