this post was submitted on 08 Dec 2023
861 points (97.5% liked)

linuxmemes

25381 readers
812 users here now

Hint: :q!

Sister communities:

Community rules (click to expand)

1. Follow the site-wide rules

2. Be civil
  • Understand the difference between a joke and an insult.
  • Do not harrass or attack users for any reason. This includes using blanket terms, like "every user of thing".
  • Don't get baited into back-and-forth insults. We are not animals.
  • Leave remarks of "peasantry" to the PCMR community. If you dislike an OS/service/application, attack the thing you dislike, not the individuals who use it. Some people may not have a choice.
  • Bigotry will not be tolerated.
    • 3. Post Linux-related content
  • Including Unix and BSD.
  • Non-Linux content is acceptable as long as it makes a reference to Linux. For example, the poorly made mockery of sudo in Windows.
  • No porn, no politics, no trolling or ragebaiting.
    • 4. No recent reposts
  • Everybody uses Arch btw, can't quit Vim, <loves/tolerates/hates> systemd, and wants to interject for a moment. You can stop now.
    • 5. πŸ‡¬πŸ‡§ Language/язык/Sprache
  • This is primarily an English-speaking community. πŸ‡¬πŸ‡§πŸ‡¦πŸ‡ΊπŸ‡ΊπŸ‡Έ
  • Comments written in other languages are allowed.
  • The substance of a post should be comprehensible for people who only speak English.
  • Titles and post bodies written in other languages will be allowed, but only as long as the above rule is observed.
    • 6. (NEW!) Regarding public figuresWe all have our opinions, and certain public figures can be divisive. Keep in mind that this is a community for memes and light-hearted fun, not for airing grievances or leveling accusations.
  • Keep discussions polite and free of disparagement.
  • We are never in possession of all of the facts. Defamatory comments will not be tolerated.
  • Discussions that get too heated will be locked and offending comments removed.
    • Β 

    Please report posts and comments that break these rules!

    Important: never execute code or follow advice that you don't understand or can't verify, especially here. The word of the day is credibility. This is a meme community -- even the most helpful comments might just be shitposts that can damage your system. Be aware, be smart, don't remove France.

    founded 2 years ago
    MODERATORS
    [email protected]
    [email protected]
    [email protected]
    861
    What the Fuck Amazon?! (lemmings.world)
    submitted 2 years ago by [email protected] to c/[email protected]
    NSFW 166 comments fedilink hide all child comments
     
    you are viewing a single comment's thread
    view the rest of the comments
    [–] [email protected] 12 points 2 years ago (12 children)

    This restriction is meant to protect high definition content from being ripped by pirates. Open systems don't offer the same DRM guarantees as the locked ones.

    [–] [email protected] 22 points 2 years ago* (last edited 2 years ago) (2 children)

    Which is bullshit because DRM doesn't effectively prevent ripping (source: you can find pirated hd content). So it's literally only harmful to the customer.

    I'll give you a quick demo of how DRM is literally useless at protecting content:

    • You need:
      • a machine with any Nvidia GPU series 600 or newer running Windows, a browser with DRM support (e.g. chrome), and optionally sunshine. This is not an uncommon setup
      • any other machine that can run moonlight (even a phone).\
    • Services often use widevine as DRM provider, so using the Nvidia machine visit this test page and make sure DRM is working
    • Normally the DRM api ensure that the decrypted content of that video can never in any form get out of a special GPU buffer, not even the browser can access it
    • enable sunshine on the machine
    • Connect from the second machine to the using moonlight and notice that the video is not being shared. DRM seems to be working correctly.
    • Now disable sunshine and enable Nvidia gamestream from GeForce experience, and set it up to share the whole desktop
    • connect from the second machine to the first using moonlight
    • now the video is being shared to the second machine, and DRM is circumvented. There is literally nothing preventing you from recording the screen on the second machine

    Now, this is a terrible way of ripping content, it causes at least one reencoding, which reduces quality (a lot of people won't even notice it), but it is a stupidly simple working demo of DRM circumvention.

    Btw, that procedure is not the result of some study, reverse engineering, or any clever stuff. I was literally playing a game in streaming and I went "hmm, I wonder what would happen if I streamed widevine" and it just worked.

    [–] [email protected] 10 points 2 years ago

    it is a stupidly simple working demo of DRM circumvention

    A much more simpler method is to just use Streamfab. No need for nVidia, a second PC etc.

    load more comments (1 replies)
    load more comments (10 replies)