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Libav Merges Its Native Opus Decoder

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  • Libav Merges Its Native Opus Decoder

    Phoronix: Libav Merges Its Native Opus Decoder

    The libav multimedia project now has a native Opus decoder with its latest Git code...

    http://www.phoronix.com/vr.php?view=MTY5MTE

  • #2
    Is there a reason for opus to not be used in hi-def video...like blu-ray movies, besides lack of player support? I mean, does opus still beat everything in high bitrates like 320+?

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    • #3
      Originally posted by Prescience500 View Post
      Is there a reason for opus to not be used in hi-def video...like blu-ray movies, besides lack of player support? I mean, does opus still beat everything in high bitrates like 320+?
      Besides player support, probably industry lobbying. FLAC has been around for longer and lossless blu-rays don't use it either.

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      • #4
        I can't imagine industry lobbying making any difference. Hollywood and porn are far more powerful than Apple and MPEG-LA. Disney single-handedly made copyright indefinate (it's extended before anything can become public domain). Besides, government isn't involved in choosing codecs, only in fining and jailing certain competitors. Maybe Sony could kill it, though. Does Sony have a stake in the patented codecs?

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        • #5
          What would porn gain in higher quality sound? It's not like there's exquisite orchestral performances requiring such.

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          • #6
            Originally posted by curaga View Post
            What would porn gain in higher quality sound? It's not like there's exquisite orchestral performances requiring such.
            I dunno... a Montage to the sound of Wagner's Ride Of The Valkyries would be pretty interesting

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            • #7
              Originally posted by curaga View Post
              What would porn gain in higher quality sound? It's not like there's exquisite orchestral performances requiring such.
              A lot actually. I read somewhere on the internet that (at small bitrates or something) better sound quality has a bigger effect on viewer pleasure than better video quality, within bounds of course. So basically, to control bandwidth, keep sound quality at "CD quality" at all times and only adjust the video quality. That keeps viewer pleasure high. At least that's my interpretation. Opus makes that easier.

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              • #8
                Perceptual analysis has shown that better sound is better than better video. Tolerance to worse images is higher than tolerance to worse audio.

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                • #9
                  Originally posted by Filiprino View Post
                  Perceptual analysis has shown that better sound is better than better video. Tolerance to worse images is higher than tolerance to worse audio.
                  I can agree to that. Not necessarily in the context of porn, but just videos in general. If I'm watching a youtube video and the video is shit but the audio is crystal clear then i'll just minimze youtube and listen to the video rather than making myself sit through pixelated crap

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                  • #10
                    Originally posted by Prescience500 View Post
                    Maybe Sony could kill it, though. Does Sony have a stake in the patented codecs?
                    https://en.wikipedia.org/wiki/MPEG_L..._AVC_Licensors

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                    • #11
                      Ah, there we go. Opus defeating AAC in movies was the easiest path to mass adoption. I guess it'll have to make it the long and hard way.

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                      • #12
                        Originally posted by Prescience500 View Post
                        Ah, there we go. Opus defeating AAC in movies was the easiest path to mass adoption. I guess it'll have to make it the long and hard way.
                        Opus won't supplant AAC any more than vorbis supplanted mp3.

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                        • #13
                          Originally posted by mudig View Post
                          A lot actually. I read somewhere on the internet that (at small bitrates or something) better sound quality has a bigger effect on viewer pleasure than better video quality, within bounds of course. So basically, to control bandwidth, keep sound quality at "CD quality" at all times and only adjust the video quality. That keeps viewer pleasure high. At least that's my interpretation. Opus makes that easier.
                          Afaik that's how youtube works: video quality can go up & down, audio quality steady.

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                          • #14
                            Originally posted by DanL View Post
                            Opus won't supplant AAC any more than vorbis supplanted mp3.
                            You clearly know very little of Opus and the impact that it has had. It by no means with supplement; it will replace. Flac is the most popular lossless compession codec, and Opus is quickly becoming the most popular lossy codec. Technically speaking it is superior to all other lossy audio codecs.

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                            • #15
                              Originally posted by profoundWHALE View Post
                              You clearly know very little of Opus and the impact that it has had. It by no means with supplement; it will replace. Flac is the most popular lossless compession codec, and Opus is quickly becoming the most popular lossy codec. Technically speaking it is superior to all other lossy audio codecs.
                              +1
                              but I think it will take 5-10 years for Opus to gain most of the lossy audio market share, for various reasons.
                              Though among Linux users Opus will take over (over mp3, vorbis, etc) a lot sooner.

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