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Opus is now RFC6716, version 1.0.1 released!
xiphmont
post Sep 11 2012, 20:19
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"Mozilla and the Xiph.Org Foundation are pleased to announce the Internet Engineering Task Force (IETF) has standardized Opus as RFC 6716. Opus is the first state-of-the-art, fully Free and Open audio codec ratified by a major standards organization."

Full announcement at xiph.org/press/2012/rfc-6716

Yay!

This post has been edited by Frank Bicking: Sep 11 2012, 20:46
Reason for edit: Fixed URL.
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CoRoNe
post Sep 12 2012, 17:53
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If I understand correctly, these are the problems they're still facing with Matroska.


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Dynamic
post Sep 15 2012, 16:48
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QUOTE (CoRoNe @ Sep 12 2012, 17:53) *
If I understand correctly, these are the problems they're still facing with Matroska.


From that link:
QUOTE (MastroskaOpus wiki)
Seeking in Opus files requires a pre-roll (recommended to be at least 80 ms). However, currently Matroska requires its index entries to point directly to the data whose timestamp matches the corresponding seek point, not some place arbitrarily before that timestamp. These two requirements are incompatible, and mean that seeking in Opus will be broken in all existing Matroska software. In particularly unlucky cases (e.g., around a transient), playing back audio decoded without any pre-roll can produce extremely loud (possibly equipment-damaging) results. We need a new element to signal this, e.g. Track::TrackEntry::PreRoll.


I believe the pre-roll is essential because of the SILK layer's predictors needing time to converge based on previous samples, but wouldn't matter in CELT-only (MDCT only) mode. Without this, excessive volume bursts may occur if SILK is active, so the BEST solution is a PreRoll (decoding but not playing 80 ms of audio or more to make it converge). Presumably if the PreRoll isn't accessible it should be acceptable (and mandatory) to mute the audio for 80ms (or follow a suitable fade-in curve).
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Posts in this topic
- xiphmont   Opus is now RFC6716, version 1.0.1 released!   Sep 11 2012, 20:19
- - bawjaws   https://hacks.mozilla.org/2012/09/its-opus-...code...   Sep 11 2012, 20:32
- - eahm   Great news! The 0.1.5 binary is 1.0.1 RC3, wh...   Sep 11 2012, 21:05
- - IgorC   Congratulations, Guys, Great job! QUOTE (e...   Sep 11 2012, 21:25
|- - eahm   QUOTE (IgorC @ Sep 11 2012, 13:25) QUOTE ...   Sep 11 2012, 21:57
|- - Steve Forte Rio   QUOTE (eahm @ Sep 11 2012, 18:57) QUOTE (...   Sep 12 2012, 15:37
|- - Dynamic   QUOTE (Steve Forte Rio @ Sep 12 2012, 15...   Sep 12 2012, 17:49
|- - zhitch   QUOTE (Steve Forte Rio @ Sep 12 2012, 10...   Oct 10 2012, 16:32
- - yourlord   Congrats and great work guys!   Sep 11 2012, 22:54
- - jensend   PARTY TIME!   Sep 11 2012, 23:14
- - benski   Is storage in the Ogg container format intended to...   Sep 12 2012, 00:08
|- - Dynamic   QUOTE (benski @ Sep 12 2012, 00:08) Is st...   Sep 12 2012, 00:47
||- - iwod   QUOTE (Dynamic @ Sep 12 2012, 00:47) QUOT...   Sep 12 2012, 15:35
||- - Dynamic   QUOTE (iwod @ Sep 12 2012, 15:35) Ogg and...   Sep 12 2012, 16:50
|- - jensend   QUOTE (benski @ Sep 11 2012, 17:08) Is st...   Sep 12 2012, 04:41
- - hlloyge   Well, it would be nice if Apple adopts it for iTun...   Sep 12 2012, 10:12
|- - Yakov   QUOTE (hlloyge @ Sep 12 2012, 10:12) Well...   Oct 10 2012, 23:06
- - mamboman   Congratulations to the developers - Opus is a real...   Sep 12 2012, 10:56
|- - bandpass   QUOTE (mamboman @ Sep 12 2012, 10:56) My ...   Sep 12 2012, 13:40
- - CoRoNe   If I understand correctly, these are the problems ...   Sep 12 2012, 17:53
|- - 2012   QUOTE (CoRoNe @ Sep 12 2012, 17:53) If I ...   Sep 12 2012, 18:52
|- - Dynamic   QUOTE (CoRoNe @ Sep 12 2012, 17:53) If I ...   Sep 15 2012, 16:48
|- - NullC   QUOTE (Dynamic @ Sep 15 2012, 07:48) I be...   Sep 16 2012, 03:14
|- - Dynamic   Thanks for the information & correction, NullC...   Sep 17 2012, 17:01
- - Speckmade   I guess this is the time and place for the big ...   Sep 12 2012, 18:53
- - eahm   I just noticed, the homepage of Opus says "Bi...   Sep 13 2012, 03:35
- - m45t3r   QUOTE (eahm @ Sep 12 2012, 23:35) I just ...   Sep 13 2012, 04:30
|- - eahm   QUOTE (m45t3r @ Sep 12 2012, 20:30) QUOTE...   Sep 13 2012, 04:39
- - viktor   Those who'd like to see Opus being supported o...   Sep 15 2012, 12:01
- - eahm   I don't know how long ago they started but Abs...   Sep 18 2012, 19:07
|- - maikmerten   QUOTE (eahm @ Sep 18 2012, 19:07) I don...   Sep 21 2012, 09:10
|- - Dynamic   QUOTE (maikmerten @ Sep 21 2012, 09:10) I...   Sep 22 2012, 22:56
- - eahm   Are they going to release the 1.0.1 binaries for W...   Sep 20 2012, 19:27
- - yourlord   I have to admit I was a little stunned by the bitr...   Sep 21 2012, 16:38
- - m45t3r   QUOTE (Dynamic @ Sep 22 2012, 18:56) QUOT...   Sep 22 2012, 23:34
|- - IgorC   AAC-ELD uses a low delay modifications of SBR (LD ...   Sep 23 2012, 01:06
- - naturfreak   There is also a commercial competitor named AAC-EL...   Sep 22 2012, 23:54
- - eahm   I think they did read my email, they took off 128k...   Sep 26 2012, 00:42
|- - Dynamic   QUOTE (eahm @ Sep 26 2012, 00:42) I think...   Sep 26 2012, 20:27
|- - lvqcl   QUOTE (Dynamic @ Sep 26 2012, 23:27) Both...   Sep 26 2012, 20:51
||- - Dynamic   Thanks. Had been getting unsupported format or cor...   Sep 26 2012, 22:49
||- - IgorC   QUOTE (lvqcl @ Sep 26 2012, 16:51) QUOTE ...   Sep 30 2012, 16:32
|- - Dynamic   QUOTE (Dynamic @ Sep 26 2012, 20:27) BTW,...   Oct 2 2012, 12:02
|- - maikmerten   QUOTE (Dynamic @ Oct 2 2012, 11:02) I fou...   Oct 2 2012, 12:30
- - Anakunda   Hi all Today foobar2k released the free encoder...   Sep 30 2012, 11:51
|- - lvqcl   QUOTE (Anakunda @ Sep 30 2012, 14:51) Tod...   Sep 30 2012, 11:55
|- - IgorC   QUOTE (Anakunda @ Sep 30 2012, 07:51) As ...   Sep 30 2012, 17:13
|- - Anakunda   I tried to compile 64bit version of the encoder ...   Sep 30 2012, 18:02
|- - twist3d   [quote name='Anakunda' date='Sep 30 20...   Oct 2 2012, 15:14
|- - Anakunda   QUOTE (twist3d @ Oct 2 2012, 16:14) Just ...   Oct 2 2012, 15:22
- - Anakunda   Is there a binary of Opus Tools using libopus 1.0....   Sep 30 2012, 12:14
|- - Emre   QUOTE (Anakunda @ Sep 30 2012, 14:14) Is ...   Sep 30 2012, 16:32
|- - eahm   QUOTE (Emre @ Sep 30 2012, 08:32) QUOTE (...   Sep 30 2012, 16:38
|- - Emre   QUOTE (eahm @ Sep 30 2012, 18:38) QUOTE (...   Sep 30 2012, 19:05
- - [JAZ]   @Anakunda: Opus is designed with realtime communi...   Sep 30 2012, 13:05
- - eahm   [JAZ], What are you talking about? QUOTE (Anakund...   Sep 30 2012, 16:25
|- - [JAZ]   QUOTE (eahm @ Sep 30 2012, 17:25) [JAZ], ...   Sep 30 2012, 16:49
- - Anakunda   Thank U for the updated encoder   Sep 30 2012, 16:42
- - IgorC   (unconstrained) VBR is a default mode. --bitrate ...   Sep 30 2012, 18:11
- - eahm   I can't tell precisely with this build because...   Sep 30 2012, 21:03
- - lvqcl   0.1.5 is the version of Opus_Tools (opusenc, opusd...   Sep 30 2012, 22:19
- - Anakunda   I've got this wish if some developer could wri...   Oct 1 2012, 10:45
|- - nu774   QUOTE (Anakunda @ Oct 1 2012, 18:45) I...   Oct 1 2012, 14:20
|- - lvqcl   QUOTE (Anakunda @ Oct 1 2012, 13:45) What...   Oct 1 2012, 15:30
||- - Yakov   QUOTE (lvqcl @ Oct 1 2012, 15:30) QUOTE (...   Oct 10 2012, 23:11
||- - saratoga   QUOTE (Yakov @ Oct 10 2012, 18:11) QUOTE ...   Oct 11 2012, 02:27
||- - Yakov   When encoding with Opus in foobar2000, what is the...   Oct 11 2012, 04:28
||- - saratoga   QUOTE (Yakov @ Oct 10 2012, 23:28) Really...   Oct 11 2012, 04:59
|||- - Dynamic   QUOTE (saratoga @ Oct 11 2012, 04:59) Edi...   Oct 11 2012, 17:44
|||- - Garf   QUOTE (Dynamic @ Oct 11 2012, 17:44) I do...   Dec 7 2012, 12:29
|||- - Dynamic   QUOTE (Garf @ Dec 7 2012, 11:29) QUOTE (D...   Dec 7 2012, 23:00
||- - NullC   QUOTE (Yakov @ Oct 10 2012, 20:28) Really...   Nov 28 2012, 19:54
|- - Dynamic   Anakunda, from your screenshot, you're asking ...   Oct 1 2012, 18:01
- - IgorC   The highest input bit depth is 32 bits for Opus.   Oct 1 2012, 17:52
|- - 2012   QUOTE (IgorC @ Oct 1 2012, 17:52) The hig...   Oct 2 2012, 01:40
- - lvqcl   Also, --vbr and --comp 10 are the default settings...   Oct 1 2012, 18:09
- - lvqcl   Interesting, but foobar2000 sends either 8, 16, 24...   Oct 2 2012, 04:16
- - eahm   RareWares added an SSE optimized 1.0.1 build as we...   Oct 10 2012, 17:29
- - CoRoNe   My god! opusinfo.exe - 63488b (non-SSE), 55961...   Oct 10 2012, 20:07
|- - Anakunda   QUOTE (CoRoNe @ Oct 10 2012, 21:07) My go...   Oct 10 2012, 20:11
- - Anakunda   It looks like libOpus 1.0.2 was released: QUOTE ...   Dec 7 2012, 07:52
- - eahm   opusenc file.wav: and with foobar2000:   Dec 7 2012, 08:58
- - Seren   Also getting ^this^   Dec 7 2012, 10:35
- - Anakunda   You are right eahm, seren. there's missing dll...   Dec 7 2012, 10:58
|- - Seren   QUOTE (Anakunda @ Dec 7 2012, 17:58) You ...   Dec 7 2012, 12:00
- - Anakunda   I apologize for the inconvenience, it as built wit...   Dec 7 2012, 12:06
|- - Garf   QUOTE (Anakunda @ Dec 7 2012, 12:06) I ap...   Dec 7 2012, 12:34
|- - Seren   QUOTE (Anakunda @ Dec 7 2012, 19:06) I ap...   Dec 7 2012, 13:38
|- - Gainless   QUOTE (Anakunda @ Dec 7 2012, 12:06) I ap...   Dec 7 2012, 17:28
|- - lvqcl   QUOTE (Gainless @ Dec 7 2012, 20:28) ...   Dec 7 2012, 18:32
|- - Anakunda   QUOTE (lvqcl @ Dec 7 2012, 18:32) Probabl...   Dec 7 2012, 18:39
|- - Gainless   QUOTE (Anakunda @ Dec 7 2012, 18:39) QUOT...   Dec 7 2012, 19:37
|- - eahm   QUOTE (Gainless @ Dec 7 2012, 11:37) Well...   Dec 7 2012, 20:27
- - eahm   Anakunda, the last one works thank you.   Dec 7 2012, 17:56
- - DOS386   QUOTE (xiphmont @ Sep 11 2012, 13:19) ...   Dec 20 2012, 10:44
- - Anakunda   Here is a new opus library version 1.1 alpha annou...   Dec 23 2012, 01:53
- - saratoga   QUOTE (Anakunda @ Dec 22 2012, 20:53) The...   Dec 23 2012, 02:03
|- - Anakunda   QUOTE (saratoga @ Dec 23 2012, 02:03) QUO...   Dec 23 2012, 02:09
|- - Speckmade   QUOTE (Anakunda @ Dec 23 2012, 03:09) So ...   Dec 28 2012, 13:08
- - Seren   QUOTE (Anakunda @ Dec 23 2012, 08:53) Ple...   Dec 23 2012, 03:22


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