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   Simon Repp (freebliss@post.lurk.org)'s status on Wednesday, 22-Jan-2025 02:08:02 JST Simon Repp

   • Ben Pate 🤘🏻

   @benpate Adjacent question: Any particular reason you picked ogg as container (and I presume then, Vorbis as codec?) for the second streaming format? Or respectively, the root of my question is also: Why not Opus? (unless you're putting opus in an ogg container, i that case I'd be curious about the container choice! :))

   • Embed this notice
     Ben Pate 🤘🏻 (benpate@mastodon.social)'s status on Wednesday, 22-Jan-2025 02:08:01 JST Ben Pate 🤘🏻

     in reply to

     I don’t have a strong opinion here, and will lean on your recommendations. What’s the reason to choose one over another?

     I only added OGG recently, swapping out AAC because the proprietary codec wasn’t supported on some versions of Linux.

     And, I’m only using the default encoding the FFMpeg used, so I’ll have to double check the details to be certain.

     @freebliss

     Jure Repinc :linux: :kde: repeated this.
   • Embed this notice
     Simon Repp (freebliss@post.lurk.org)'s status on Wednesday, 22-Jan-2025 02:08:01 JST Simon Repp

     in reply to

     • Ben Pate 🤘🏻

     @benpate I highly recommend Opus these days because it offers the best compression/quality ratio at pretty much all bitrates¹ ², and at the same time it's also supported in almost all browsers.

     Exceptions are: IE (<0.5% market share) with no support at all, and Safari/iOS up to 17.3 (~4.5% market share) only supports opus in a CAF container, hence a fallback is required for these.

     Faircamp currently provides streaming assets as Opus 96 kbit/s [-codec:a libopus -b:a 96k] with MP3 VBR V5 (120-150kbit/s) [-codec:a libmp3lame -qscale:a 5] as a fallback, respectively as Opus 48kbit/s [-codec:a libopus -b:a 48k] and MP3 VBR V7 (80-120kbit/s) [-codec:a libmp3lame -qscale:a 7] with the "frugal" option.

     As the market share for iOS17.3 shrinks further I'll see if opus-only (in a WEBM container) is supported everywhere and go that road eventually.

     ¹ "In listening tests around 64 kbit/s, Opus shows superior quality compared to HE-AAC codecs (...) In listening tests around 96 kbit/s, Opus shows slightly superior quality compared to AAC and significantly better quality compared to Vorbis and MP3." – https://en.wikipedia.org/wiki/Opus_(audio_format)#Quality_comparison_and_low-latency_performance

     ² https://opus-codec.org/comparison/ has some studies linked like e.g. https://listening-test.coresv.net/results.htm - note that in the meantime opus 1.1 supposedly increased quality even further, this is not yet reflected in these tests.