[Icecast] Opus vs. Vorbis

"Thomas B. Rücker" thomas at ruecker.fi
Sun Jun 9 08:19:45 UTC 2013

On 05/31/2013 04:48 PM, Gagarin Miljkovich wrote:
> Hello Dennis!
> Please send me the links to your streams. I'm interested in the
> audioquality.

You can also check out:

Best regards

Thomas B. Ruecker

> Dennis Heerema <Dennis at Heerema.net> wrote:
>     Hello Jordan,
>     I run a test stream in OPUS format.
>     I find the quality of OPUS way better at low bitrates then VORBIS.
>     Thus better quality at lower bitrates, but also on higher bitrates the
>     codec sounds good.
>     Latency is lower, but for broadcasting a radio program for me at the
>     moment it is not that importend, so i did not test that really with
>     icecast (i did test opus low latency but with other applications:
>     fideliphone and teamtalk)
>     Stream runs stable, my stream is a transcode made by Liquidsoap, from a
>     transparent ogg vorbis stream (The reason i'm doing that is because i'm
>     transcoing also to  mp3, vorbis aacplus at different bitrates).
>     Input is a live stream from a studio to my main icecast server, on this
>     server i transcode with liquidsoap. Then every stream is relayed by two
>     public ic
>      ecast
>     servers where listener clients connect to.
>     Running this for quite a while now and it is stable for all streams.
>     The is one downside on OPUS at the moment, there are not that much
>     clients able to play opus, plus on track change the stream makes a
>     little frame noticeable dropout. I do not know wheather this is cased by
>     liquidsoap or the player.
>     The quys from liquidsoap say it is a problem how the player implemented
>     the opus codec (VLC).
>     If you want, you can listen to my (dutch streams, day hours non stop
>     music, evenings programms hosted by a announcer) streams, send my a
>     private message and i will send you al my diffrent stream links, so you
>     can compare.
>     Kind regards,
>     Dennis
>     Op 31-5-2013 16:43, TheDarkener schreef:
>         Hi all, < br />I've been looking at opus lately as a
>         replacement to vorbis and it sure seems to me that, at least
>         on paper, it is the 'next generation' streaming codec. Has
>         anyone been using opus as a streaming codec to Icecast? If so,
>         how do the following general characteristics compare to
>         vorbis? + Quality + Latency + Bandwidth + Performance (on
>         stream client and Icecast server) + Stability Also, what use
>         case in your setup (voice only, music, pre-recorded files vs.
>         live input, ?) Any input is greatly appreciated. I understand
>         there is little support (compared to vorbis, anyway) for opus,
>         but I'm hoping to help change that at least a little bit.
>         Cheers, Jordan
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