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IETF Opus codec now ready for testing, That's CELT 0.11
jmvalin
post Feb 4 2011, 17:36
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We'd like to announce that the Opus codec is now ready for testing. The bit-stream is now is a "pseudo-freeze", which means that unless a problem is found during testing/review, there are no longer any changes planned. The only exception to this are the SILK-mode FEC and the stereo SILK mode, which should be landing in the next few days. Considering that these are not critical features, we felt like the testing phase could already begin.

You can get the source code in two different ways. There is a release tarball at http://jmvalin.ca/opus/opus-0.9.0.tar.gz . You can also extract the source directly from the I-D ( http://www.ietf.org/id/draft-ietf-codec-opus-02.txt ) with the following command:

cat draft-ietf-codec-opus-02.txt | grep '^\ \ \ ###' |
sed 's/\s\s\s###//' | base64 -d > opus_source.tar.gz

Now the Opus codec supports three mores, one of which is identical to CELT 0.11, which was just released (not announced officially yet).

It would be nice if the HA community could help test this codec. Opus targets a very wide range of bit-rates, from 6 kb/s narrowband speech up to 510 kb/s stereo music. Perhaps a 64-96 kb/s stereo music test would be interesting to do. Anyone would like to help?
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LithosZA
post May 31 2012, 19:13
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QUOTE

Are you using this one?

CODE
C:\opus-tools>opusenc.exe
Usage: opusenc [options] input_file output_file.opus

Encodes input_file using Opus. It can read the WAV, AIFF, or raw files.

General options:
-h, --help This help
-v, --version Version information
--quiet Quiet mode

input_file can be:
filename.wav file
- stdin

output_file can be:
filename.opus compressed file
- stdout

Encoding options:
--speech Optimize for speech
--music Optimize for music
--bitrate n.nnn Encoding bitrate in kbit/sec (6-256 per channel)
--vbr Use variable bitrate encoding (default)
--cvbr Use constrained variable bitrate encoding
--hard-cbr Use hard constant bitrate encoding
--comp n Encoding complexity (0-10, default: 10)
--framesize n Maximum frame size in milliseconds
(2.5, 5, 10, 20, 40, 60, default: 20)
--expect-loss Percentage packet loss to expect (default: 0)
--downmix-mono Downmix to mono
--downmix-stereo Downmix to stereo (if >2 channels)
--max-delay n Maximum container delay in milliseconds
(0-1000, default: 1000)

Diagnostic options:
--save-range file Saves check values for every frame to a file
--set-ctl-int x=y Pass the encoder control x with value y (advanced)
Preface with s: to direct the ctl to multistream s
This may be used multiple times
--uncoupled Use one mono stream per channel

Metadata options:
--comment Add the given string as an extra comment
This may be used multiple times
--artist Author of this track
--title Title for this track

Input options:
--raw Raw input
--raw-bits n Set bits/sample for raw input (default: 16)
--raw-rate n Set sampling rate for raw input (default: 48000)
--raw-chan n Set number of channels for raw input (default: 2)
--raw-endianness n 1 for bigendian, 0 for little (defaults to 0)


This post has been edited by db1989: Jul 3 2012, 17:30
Reason for edit: Please use [codebox] for large items, not [quote].
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zerowalker
post Jun 1 2012, 00:41
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Had done something entirely else XD

But got it working with that one now, using cmd etc.

And from my tests,

OPUS Is better than Autov with keeping details on characteristic things, like a singers dark voice etc, while Autov fails here and "blend" everything to make it smooth or something.

The Good thing with this is, you get more detail on these parts, the bad thing is, you get more "cracks etc" in the "surroundings".


Sorry for bad explanation, not the best listener nor explainer on this kind of stuff.
But thatīs atleast what i got out of it on my tests.


EDIT:

I may take back my statement on which i prefer.

When i listen once again on them, the OPUS does have a Fuller more Concrete sound, while Autov like i said about, pretty much smooth things out to keep it "transparent".
I think that if i just play awhile i will ignore those crack sounds and it will be pretty pleasent really.

Though itīs not like i am going to sit and listen to 45 kbit music here, but itīs really neat that itīs moving forward on the Transparent/Size scale.

From what i would prefer, i think i would go with Autov as itīs more Transparent with the cracks and overall smoothness in the sound, though i really like the way opus keeps the details on stuff, but sadly the cracks is to much to be pleasent.

Settings where for one example: --framesize 60 --music --bitrate 45, Autov = q-1
Went after the filesize.

This post has been edited by zerowalker: Jun 1 2012, 00:48
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rt87
post Jun 1 2012, 00:49
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aoTuV Q -1 is 48kbps. wink.gif

This post has been edited by db1989: Jul 3 2012, 17:29
Reason for edit: deleting pointless full quote of above post


--------------------
Sorry for my English.
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Posts in this topic
- jmvalin   IETF Opus codec now ready for testing   Feb 4 2011, 17:36
- - mudlord   Did some testing.... I noticed one particulary bad...   May 5 2011, 11:33
- - mudlord   Peter fixed this, now cant ABX the samples. Issue ...   May 7 2011, 15:01
- - Tom Servo   Sorry for looking like a tool for asking this, but...   Jun 19 2011, 00:46
|- - NullC   QUOTE (Tom Servo @ Jun 18 2011, 16:46) So...   Jul 27 2011, 20:04
- - mudlord   Oh, since your here, did jmvalin add the resampler...   Sep 4 2011, 23:13
- - romor   subscribe?   Sep 4 2011, 23:44
- - mudlord   ah yes, just noticed that, opusenc includes the re...   Sep 5 2011, 12:58
- - FreaqyFrequency   I'll go ahead and bump this thread as well, wh...   Oct 13 2011, 16:04
- - Speckmade   The codec's featureset sounds as if it could b...   Nov 26 2011, 15:05
- - FreaqyFrequency   I'm hoping that Opus will be used more widely ...   Nov 27 2011, 04:57
- - greensdrive   I was under the impression that low latency usuall...   Nov 27 2011, 16:20
- - Speckmade   QUOTE (FreaqyFrequency @ Nov 27 2011, 04...   Nov 28 2011, 03:11
|- - NullC   QUOTE (Speckmade @ Nov 27 2011, 18:11) Op...   Dec 1 2011, 04:08
|- - IgorC   Speaking about complexity the things are changing ...   Dec 1 2011, 15:44
- - greensdrive   QUOTE (Speckmade @ Nov 27 2011, 20:11) co...   Nov 28 2011, 04:46
|- - Speckmade   QUOTE (greensdrive @ Nov 28 2011, 04:46) ...   Dec 1 2011, 01:55
- - punkrockdude   Will the CELT encoder accept 24 bit wav files? I a...   Jan 15 2012, 11:45
- - Caroliano   I saw the IETF draft, and, as expected, the final ...   Jan 20 2012, 05:48
|- - rillian   QUOTE (Caroliano @ Jan 19 2012, 20:48) So...   Jan 23 2012, 23:49
|- - NullC   QUOTE (Caroliano @ Jan 19 2012, 20:48) I ...   Jan 24 2012, 00:28
|- - bawjaws   QUOTE (NullC @ Jan 23 2012, 16:28) The pr...   Mar 16 2012, 14:47
- - .alexander.   CELT/OPUS has been designed before 2/06/12 and I...   Mar 27 2012, 14:14
|- - NullC   QUOTE (.alexander. @ Mar 27 2012, 05:14) ...   Apr 10 2012, 00:29
- - polemon   Can we have some updates about OPUS? there isn...   May 4 2012, 14:42
|- - bawjaws   QUOTE (polemon @ May 4 2012, 06:42) Can w...   May 21 2012, 14:38
|- - NullC   QUOTE (polemon @ May 4 2012, 06:42) Can w...   May 24 2012, 04:49
|- - NullC   For any Windows users who are waiting on binaries ...   May 28 2012, 01:22
|- - mdefranc   Works on my Vista system, as well.   May 28 2012, 05:12
|- - bawjaws   QUOTE (NullC @ May 27 2012, 17:22) If any...   May 29 2012, 10:42
- - IgorC   Yes, encoder has a big room for improvements. Some...   May 21 2012, 21:16
|- - 2012   Indivisual/Average bitrates would have been great ...   May 22 2012, 12:26
- - IgorC   Bitrate calibration was done on 45 tracks of diffe...   May 22 2012, 14:05
|- - 2012   Thanks.   May 22 2012, 15:00
- - kode54   Plays audio on my Windows 7 system. Also decodes t...   May 28 2012, 02:30
- - Gainless   Can someone explain how to use the command line de...   May 28 2012, 12:53
- - dr.schanker   Works fine under WindowsXP SP3 32bit. However, i f...   May 28 2012, 15:38
- - naturfreak   @dr. schanker The Opus codec does not support mult...   May 28 2012, 16:25
|- - dr.schanker   QUOTE (naturfreak @ May 28 2012, 17:25) @...   May 28 2012, 21:11
|- - NullC   QUOTE (naturfreak @ May 28 2012, 08:25) @...   May 29 2012, 07:49
- - zerowalker   How can i get a compiled encoder of this codec:)? ...   May 28 2012, 17:27
- - naturfreak   QUOTE (NullC @ May 29 2012, 07:49) Multic...   May 29 2012, 10:38
- - dr.schanker   The inputfile: "test_wav.7z" (5 MB) The...   May 29 2012, 20:18
|- - NullC   QUOTE (dr.schanker @ May 29 2012, 12:18) ...   May 30 2012, 21:23
- - zerowalker   did som fast tests after finally getting it to wor...   May 30 2012, 22:17
- - rt87   a rough test is done here: test file: vocal only ...   May 31 2012, 05:13
- - LithosZA   QUOTE I:\>opusenc --music --bitrate 48 --f...   May 31 2012, 08:15
|- - rt87   QUOTE (LithosZA @ May 31 2012, 15:15) QUO...   May 31 2012, 08:29
- - LithosZA   QUOTE did som fast tests after finally getting it ...   May 31 2012, 08:33
|- - zerowalker   QUOTE (LithosZA @ May 31 2012, 09:33) QUO...   May 31 2012, 17:18
|- - NullC   QUOTE (zerowalker @ May 31 2012, 09:18) O...   Jun 1 2012, 04:28
- - LithosZA   QUOTE It's linked above— https://people....   May 31 2012, 19:13
|- - zerowalker   Had done something entirely else XD But got it wo...   Jun 1 2012, 00:41
|- - rt87   aoTuV Q -1 is 48kbps.   Jun 1 2012, 00:49
- - punkrockdude   I can't seem to playback an encoded opus file ...   May 31 2012, 20:27
- - LithosZA   QUOTE I can't seem to playback an encoded opus...   May 31 2012, 20:36
|- - punkrockdude   QUOTE (LithosZA @ May 31 2012, 20:36) foo...   May 31 2012, 20:41
|- - kode54   QUOTE (punkrockdude @ May 31 2012, 12:41)...   Jun 1 2012, 03:55
- - CoRoNe   Does Opus have, or will Opus get an option equival...   Jun 1 2012, 23:09
- - Gainless   Already found a sort of bug sample with a loud dis...   Jun 1 2012, 23:31
|- - 2012   QUOTE (Gainless @ Jun 1 2012, 23:31) Alre...   Jun 1 2012, 23:55
|- - 2012   QUOTE (2012 @ Jun 1 2012, 23:55) Opus ope...   Jun 2 2012, 00:08
- - Gainless   QUOTE (2012 @ Jun 2 2012, 00:55) QUOTE (G...   Jun 2 2012, 00:16
|- - NullC   QUOTE (Gainless @ Jun 1 2012, 16:16) Ok, ...   Jun 2 2012, 06:03
|- - 2012   QUOTE (NullC @ Jun 2 2012, 06:03) Based o...   Jun 2 2012, 10:17
|- - Gainless   QUOTE (NullC @ Jun 2 2012, 07:03) QUOTE (...   Jun 2 2012, 12:37
- - lvqcl   upper channel: opusenc --bitrate 128 --framesize 6...   Jun 2 2012, 10:46
|- - NullC   QUOTE (lvqcl @ Jun 2 2012, 02:46) upper c...   Jun 3 2012, 03:02
- - zerowalker   Maybe a stupid question, but can someone say, what...   Jun 3 2012, 02:19
|- - NullC   QUOTE (zerowalker @ Jun 2 2012, 18:19) Ma...   Jun 3 2012, 02:55
|- - zerowalker   QUOTE (NullC @ Jun 3 2012, 03:55) QUOTE (...   Jun 3 2012, 03:08
|- - NullC   QUOTE (zerowalker @ Jun 2 2012, 19:08) Ah...   Jun 3 2012, 04:25
- - NullC   Okay, the fix for the click on the opusdec 44.1kHz...   Jun 3 2012, 04:16
|- - rt87   QUOTE (NullC @ Jun 3 2012, 11:16) Okay, t...   Jun 3 2012, 09:42
|- - NullC   QUOTE (rt87 @ Jun 3 2012, 00:42) Cannot o...   Jun 3 2012, 14:22
- - lvqcl   CODEDecoding 44100 Hz audio (1 channel) Ca...   Jun 3 2012, 10:40
- - IgorC   Opus, AoTuV and Apple AAC at ~ 128 kbps http://d.h...   Jun 3 2012, 18:56
- - bawjaws   I notice the previous blog entry was them testing ...   Jun 3 2012, 21:49
- - darkbyte   Is somebody working on a foobar decoder plugin for...   Jun 5 2012, 16:02
- - greensdrive   not sure if this is a bug or if it's meant to ...   Jun 6 2012, 06:13
|- - NullC   QUOTE (greensdrive @ Jun 5 2012, 22:13) n...   Jun 11 2012, 14:57
- - lvqcl   I have a question about setup_resample() function....   Jun 11 2012, 16:32
|- - NullC   QUOTE (lvqcl @ Jun 11 2012, 08:32) I have...   Jun 11 2012, 16:51
- - lvqcl   get_output_latency() returns rounded value... For...   Jun 11 2012, 17:27
|- - NullC   QUOTE (lvqcl @ Jun 11 2012, 09:27) get_ou...   Jun 11 2012, 19:06
- - greensdrive   this first one doesn't work (I put --vbr just ...   Jun 11 2012, 20:29
|- - NullC   QUOTE (greensdrive @ Jun 11 2012, 12:29) ...   Jun 11 2012, 21:11
- - kode54   foobar2000 sends 0xFFFFFFFF for the length fields ...   Jun 11 2012, 23:42
- - greensdrive   QUOTE (NullC @ Jun 11 2012, 15:11) How lo...   Jun 12 2012, 04:01
|- - NullC   QUOTE (greensdrive @ Jun 11 2012, 19:01) ...   Jun 12 2012, 05:38
- - greensdrive   --ignorelength works like a charm.   Jun 12 2012, 14:47
|- - NullC   QUOTE (greensdrive @ Jun 12 2012, 05:47) ...   Jun 12 2012, 16:17
- - greensdrive   wow. no --ignorelength. no %s. opusenc.exe now ...   Jun 12 2012, 17:26
- - NullC   Just a minor update: The win32 builds of opus-to...   Jun 14 2012, 19:43
- - greensdrive   NullC: not directly related to opus, but it seems...   Jun 14 2012, 20:44
|- - NullC   QUOTE (greensdrive @ Jun 14 2012, 11:44) ...   Jun 14 2012, 21:11
- - Brazil2   Before I run anything, can you explain me why the ...   Jun 15 2012, 09:55
|- - NullC   QUOTE (Brazil2 @ Jun 15 2012, 01:55) Befo...   Jun 15 2012, 21:11
|- - Brazil2   QUOTE (NullC @ Jun 15 2012, 22:11) The Mo...   Jun 16 2012, 17:31
- - NullC   Opus has received the IETF's approval to becom...   Jul 3 2012, 14:21
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