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Opus Audio Codec 1.2 Release Candidate 1 Arrives

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  • Opus Audio Codec 1.2 Release Candidate 1 Arrives

    Phoronix: Opus Audio Codec 1.2 Release Candidate 1 Arrives

    Just weeks after the Opus 1.2 beta, the release candidate for this forthcoming audio codec update / library has been released...

    http://www.phoronix.com/scan.php?pag...2-RC1-Released

  • #2
    Does Ogg Vorbis still have any place now with Opus?
    Does Opus supersede Ogg Vorbis?

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    • #3
      Originally posted by uid313 View Post
      Does Ogg Vorbis still have any place now with Opus?
      Does Opus supersede Ogg Vorbis?
      I guess the same count of place as MP3 has now that AAC exists. Though Opus also lacks the support for proper surround-sound just like Vorbis and MP3 does, since it doesn't have any way of doing anything smart with multi-channels beyond stereo and can't mark what the channels are.

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      • #4
        Originally posted by uid313 View Post
        Does Ogg Vorbis still have any place now with Opus?
        My car radio only understands Vorbis, so… yeah .

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        • #5
          Originally posted by carewolf View Post

          I guess the same count of place as MP3 has now that AAC exists. Though Opus also lacks the support for proper surround-sound just like Vorbis and MP3 does, since it doesn't have any way of doing anything smart with multi-channels beyond stereo and can't mark what the channels are.
          ??? Opus supports 255 channels and bitrates scale according to how many channels are in the source.

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          • #6
            Originally posted by mmstick View Post

            ??? Opus supports 255 channels and bitrates scale according to how many channels are in the source.
            and support for Ambisonics

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            • #7
              Originally posted by uid313 View Post
              Does Ogg Vorbis still have any place now with Opus?
              Does Opus supersede Ogg Vorbis?
              AFAIK MS has patents on Opus, and none on Vorbis. So if you have patents yourself and don't like MS you may still choose Vorbis.
              There is also the legacy that lots of games use vorbis, since latency is no problem, and spotify uses vorbis.

              Technically Opus is superior, so if you like/trust MS and are doing something new, you choose opus such as say google and whatsapp.

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              • #8
                Originally posted by mmstick View Post

                ??? Opus supports 255 channels and bitrates scale according to how many channels are in the source.
                It doesn't support compression between sources more than stereo, and most importantly, in multi-channel mode it doesn't actually say what ANY of the channels actually are, making it mostly pointless.


                Note, this is the exact same issue vorbis and many other formats has, there are work-arounds to it, such as just accepting the poor compression of compressing every channel separately, and just make assumptions such as 6 channels being dolby 5+1, but it is just work-arounds.
                Last edited by carewolf; 06-09-2017, 10:57 AM.

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                • #9
                  Originally posted by Wilfred View Post
                  AFAIK MS has patents on Opus, and none on Vorbis. So if you have patents yourself and don't like MS you may still choose Vorbis.
                  There is also the legacy that lots of games use vorbis, since latency is no problem, and spotify uses vorbis.

                  Technically Opus is superior, so if you like/trust MS and are doing something new, you choose opus such as say google and whatsapp.
                  Wasn't aware of that but with the involvement of engineers from Skype in the development of Opus that makes sense. However, you're not likely to be hassled about using Opus. Read more about the patents here: http://opus-codec.org/license/

                  Looks like they're all US patent numbers anyway, so since I'm in the EU (for now - huge thanks to people on the continent who give a damn about DRM, software patents, etc, for defending against that kind of crap, unlike the majority of my fellow countrymen) I'll quote from Linus' message to Nvidia if it ever comes up.

                  It's good to have this sort of royalty-free standard around so I'm looking forward to hearing more about whatever the NETVC project comes up with for video.
                  Last edited by ResponseWriter; 06-09-2017, 12:23 PM.

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                  • #10
                    Originally posted by carewolf View Post

                    It doesn't support compression between sources more than stereo, and most importantly, in multi-channel mode it doesn't actually say what ANY of the channels actually are, making it mostly pointless.


                    Note, this is the exact same issue vorbis and many other formats has, there are work-arounds to it, such as just accepting the poor compression of compressing every channel separately, and just make assumptions such as 6 channels being dolby 5+1, but it is just work-arounds.
                    No one gives a fuck about surround sound. Two speakers, maybe a subwoofer. Anything else is pointless unless you are in a movie theater.

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