Dav2d

(code.videolan.org)

87 points | by dabinat 1 hour ago

5 comments

  • jzebedee 1 hour ago
    Project description:

      dav2d is the fastest AV2 decoder on all platforms :)
      Targeted to be small, portable and very fast.
    
    If you're out of the loop like me:

      AV2 is the next-generation video coding specification from the Alliance for Open Media (AOMedia). Building on the foundation of AV1, AV2 is engineered to provide superior compression efficiency, enabling high-quality video delivery at significantly lower bitrates. It is optimized for the evolving demands of streaming, broadcasting, and real-time video conferencing. 
    
    - from https://av2.aomedia.org/
    • delfinom 13 minutes ago
      • Telaneo 6 minutes ago
        They've done the same thing with AV1, and I can't see that having prevented adoption, nor can I imagine Sisvel wanting to poke the bear that is AOMedia unless they're certain their case is absolutely watertight.
        • walrus01 2 minutes ago
          I see zero public evidence that they've filed any lawsuits against the members of AOM in any jurisdiction. I'm sure there's been a lot of threatening letters sent...
      • walrus01 9 minutes ago
        Sisvel is a patent troll. Take a look at the combined list of all companies that are the AOM and tell me with a straight face that all of their corporate in house counsel specializing in intellectual property law are wrong.
  • tensor 51 minutes ago
    Not on topic, but wow the internet has very quickly devolved into: click -> "making sure you're not a bot", click -> "making sure you're a human", click -> "COOKIES COOKIES COOKIES", click -> "cloudflare something something"
    • port11 49 minutes ago
      The internet is such a Tragedy of the Commons… its citizens that act selfishly and in bad faith will slowly make it unusable.
      • honktime 33 minutes ago
        Its pretty explicitly not a tragedy of the commons. Its a tragedy of the ruling class abusing the resources of the 'commons' to extract value. There is nothing 'commons' about trillion dollar companies extracting all available value from the labor of the working class. That's just the tragedy that'll bring around the death of society, the same tragedy that brings all other tragedys
        • amusingimpala75 14 minutes ago
          Thank you for describing the tragedy of the commons
        • throw-the-towel 8 minutes ago
          The commons in question is the internet itself.
        • dyauspitr 3 minutes ago
          There’s definitely lots of problems with the ruling class and wealth disparity. Perhaps the defining problems of our current age.

          That being said, so many of the plebs suck. Like 2% will ruin everything for everyone.

          • throw-the-towel 1 minute ago
            While a lot of the plebs do suck, a pleb who sucks causes way less problems than a big corp that sucks simply by virtue of not having too much resources.
    • thresh 24 minutes ago
      We had to set it up on the parts of VideoLAN infra so the service would remain usable.

      Otherwise it was under a constant DDoS by the AI bots.

    • tosti 44 minutes ago
      I get exactly none of that. Is your adblocker still working?
    • oybng 20 minutes ago
      renders your gigabit connection pointless
  • Zopieux 47 minutes ago
    >video decoder implementation

    >look inside

    >it's C

    • tux3 16 minutes ago
      Not just C, dav1d and dav2d are actually mostly written in ASM! Then there's a bit of C as the glue or for functions that don't have optimized ASM yet.

      Since dav2d is newer it has a higher fraction of C, but not enough for it to be the main language in the codebase :)

  • xnx 49 minutes ago
    [flagged]
    • virtualritz 37 minutes ago
      And who ever heard of this in the majority of the world? It was news to me, I'm white and European btw.

      Did you know the US consititues about 4% of humans? When we look at adults and age range that likely ever hear of D4vd we are talking probably considerably less that 1%.

      The rest of humanity has no negative association with these four letters.

      • DaiPlusPlus 30 minutes ago
        > And who ever heard of this in the majority of the world? It was news to me, I'm white and European btw.

        It's a recurring headline on the rolling news channels on broadcast TV right now - and it's on the front-page of Reddit for me as well.

        • Almondsetat 23 minutes ago
          So a project should change its name because when it will be production ready 6 years from now the 1% of the 1% of the 1% will think for 1 microsecond about a piece of news from today?
          • Lerc 18 minutes ago
            Just that remember that there were people that said calling the second LOTR movie The Two Towers was disrespectful.
        • dingdingdang 25 minutes ago
          Gotta admit this was the first thing I thought of as well. Hard to focus on the code implementation with that in mind!
    • cosmotic 47 minutes ago
      Its a followup to their existing Dav1d decoder (av1, av2)
      • cogman10 21 minutes ago
        Which, should be noted, was a thing before d4vd started his career.

        dav1d - started in 2018

        d4vd - started composing in 2021

    • NewsaHackO 39 minutes ago
      It's just unfortunate. Like there was a pharmaceutical company named "Isis" that changed their name due to the association with the terrorist group. That said, while people will notice for the next couple of months, I don't think it warrants changing a name for.
    • walrus01 17 minutes ago
      By this logic nobody should ever name their child Ted or Theodore because Ted Bundy existed.
  • dcsommer 23 minutes ago
    We must not continue to develop media codecs in memory unsafe languages. Small, auditable sections can opt-out perhaps, but choosing default-unsafe for this type of software is close to professional negligence.
    • fguerraz 7 minutes ago
      Cryptography and video codecs are notable exceptions, they put a lot of effort to making the code provably memory safe: no recursion, limited use of stack variables, no dynamic allocations, etc. As a result, memory safe languages bring nothing but trouble by making it non deterministic, that’s especially true for crypto where compiler “optimisations” guarantee you side channels attacks.