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What features would you like to see in opus-tools?
NullC
post Jan 22 2013, 21:13
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I'm looking for suggested features to get into opus-tools prior to the libopus 1.1 release.

Before I get 1001 suggestions for it: One frequently requested feature which was recently added is flac input in opusenc. I'm contemplating changing opusdec to use the new opusfile library— which would give it seeking and integrated http(s) streaming support. Also already on my todo list are default comment packet padding so updating metadata doesn't require rewriting the files and adding a replaygain tool.

Some people would really like it if opusenc/opusdec supported taking multiple input files e.g. opusenc *.flac but the implicit output file naming is pretty ununixy, and would break the interface and I got flamed all to heck last time I changed the opusenc interface.... so I'm not sure if/how I want to accommodate that usage.

What other things have you found missing?
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Omicron
post Feb 22 2013, 22:01
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From: Kishinev
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QUOTE
how would the said encoder know how good the music should be

I think it's possible. May be it's difficult to do, but it's possible. Needs one more algorithm for such a work and some sound experts with good/perfect hearing to find that optimal quality when nobody could distinguish the differences.

QUOTE
if you think the answer is "as good as it can be", try lossless.

You are Captain Obvious, aren't you?)

QUOTE
It is impossible for an encoder to conclude that x file at y quality will be transparent to “human”, assuming you mean everyone. And it’s impossible for them to guarantee the same thing for any single human.

OK, for any sound expert while developing algorithm. So no one in the world could carp for none perfect quality.

QUOTE
and find one that is generally transparent to him/her.

For this I need to find out the optimal bitrate just for one track. And I need to do this over and over again. So it's easier to use always 510kbps or use lossless, and it's not quite good for disk space.

For one of the sound it's impossible to distinguish differences at 128kbps, for other at 96kbs. So encoder chooses the optimal quality for each sound more variable not only over the chosen bitrate. 'cos, for example, when I encode mp3(v0) to opus(512) (I know that it's not good to do this, it's just for an example), opus is 7.48mb, while mp3 was 4.43. Do you know what I mean?

If it is a bad idea or very difficult to do, just... never mind.
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Posts in this topic
- NullC   What features would you like to see in opus-tools?   Jan 22 2013, 21:13
- - skamp   What I'd like: an equivalent to vorbiscomment...   Jan 22 2013, 21:25
|- - nu774   QUOTE (skamp @ Jan 23 2013, 05:25) Slight...   Jan 23 2013, 13:12
||- - nu774   QUOTE (nu774 @ Jan 23 2013, 21:12) If I r...   Jan 23 2013, 15:15
|- - skamp   QUOTE (skamp @ Jan 22 2013, 22:25) an equ...   Jul 1 2013, 10:10
|- - Brazil2   QUOTE (skamp @ Jul 1 2013, 11:10) Well, F...   Jul 1 2013, 12:42
- - CoRoNe   Perhaps totally off-topic, but could you lend the ...   Jan 23 2013, 00:31
|- - Seren   Can't really think of anything atm except mayb...   Jan 23 2013, 12:04
|- - DonP   QUOTE (Seren @ Jan 23 2013, 06:04) Can...   Jan 23 2013, 13:14
|- - Banned   QUOTE (lvqcl @ Jan 23 2013, 15:40) Curren...   Jan 23 2013, 19:45
|- - DonP   QUOTE (Banned @ Jan 23 2013, 13:45) QUOTE...   Jan 23 2013, 20:39
|- - NullC   QUOTE (Banned @ Jan 23 2013, 11:45) Well,...   Jan 23 2013, 21:31
|- - Banned   QUOTE (NullC @ Jan 23 2013, 21:31) QUOTE ...   Jan 28 2013, 18:26
- - mamboman   Yes, converting flac to opus will be a very common...   Jan 23 2013, 12:56
|- - gottkaiser   QUOTE (mamboman @ Jan 23 2013, 12:56) ......   Jan 23 2013, 19:38
- - lvqcl   Currently opusenc requires the output filename and...   Jan 23 2013, 15:40
- - .alexander.   QUOTE (NullC @ Jan 23 2013, 00:13) I...   Jan 23 2013, 19:06
|- - saratoga   QUOTE (.alexander. @ Jan 23 2013, 13:06) ...   Jan 23 2013, 23:32
||- - .alexander.   QUOTE (saratoga @ Jan 24 2013, 02:32) Tha...   Jan 24 2013, 00:04
|- - jmvalin   QUOTE (.alexander. @ Jan 23 2013, 13:06) ...   Jan 24 2013, 02:02
- - Dynamic   I think there was a time when VBR quality scales t...   Jan 23 2013, 23:20
- - azaqiel   I would like an opus gain tool that ONLY TAGS the ...   Jan 24 2013, 04:41
- - LithosZA   A maximum bandwidth setting. In libopus the bandwi...   Jan 26 2013, 12:40
- - IgorC   Intensity stereo (IS) setting as all other phsycoa...   Jan 26 2013, 13:09
- - bat_guano   QUOTE (NullC @ Jan 22 2013, 21:13) I...   Jan 26 2013, 19:02
- - nu774   Bitrate might be surely enough when one is working...   Jan 27 2013, 17:42
- - Dynamic   I think QAAC's TVBR settings are roughly half ...   Jan 28 2013, 03:30
|- - NullC   QUOTE (Dynamic @ Jan 27 2013, 18:30) If p...   Feb 4 2013, 19:58
- - moosehunter   There are a few things that I'd like to see. I...   Feb 10 2013, 05:43
|- - NullC   QUOTE (moosehunter @ Feb 9 2013, 20:43) T...   Feb 15 2013, 20:02
||- - moosehunter   QUOTE (NullC @ Feb 15 2013, 13:02) Use th...   Feb 18 2013, 00:31
|- - jensend   Wrote much of this almost a week ago; realized I s...   Feb 15 2013, 20:22
|- - moosehunter   (Can you not edit your posts?) QUOTE (jensend ...   Feb 18 2013, 01:49
|- - jensend   You can edit your posts- but only for one hour aft...   Feb 18 2013, 17:00
|- - moosehunter   QUOTE (jensend @ Feb 18 2013, 10:00) This...   Feb 19 2013, 01:56
|- - jmvalin   QUOTE (jensend @ Feb 18 2013, 11:00) Inte...   Feb 19 2013, 07:11
- - LithosZA   QUOTE A maximum bandwidth setting. In libopus the ...   Feb 18 2013, 06:45
- - Omicron   It would be good to make a feature in encoder so u...   Feb 21 2013, 12:28
|- - db1989   QUOTE (Omicron @ Feb 21 2013, 11:28) It w...   Feb 21 2013, 21:22
- - azaqiel   @Omicron: impossible. how would the said encoder...   Feb 21 2013, 21:15
- - kennedyb4   Tags that would work in Rockbox would be great.   Feb 21 2013, 23:41
- - Omicron   QUOTE how would the said encoder know how good the...   Feb 22 2013, 22:01
|- - db1989   Is there something contagious going around Hydroge...   Feb 22 2013, 22:30
||- - NullC   QUOTE (db1989 @ Feb 22 2013, 13:30) Is th...   Feb 22 2013, 23:44
||- - jensend   QUOTE (NullC @ Feb 22 2013, 15:44) I will...   Feb 23 2013, 20:48
|- - jmvalin   QUOTE (Omicron @ Feb 22 2013, 16:01) I th...   Feb 23 2013, 02:29
- - darkbyte   I think a per channel bitrate setting would be use...   Mar 13 2013, 12:56
|- - jmvalin   QUOTE (darkbyte @ Mar 13 2013, 07:56) I t...   Mar 13 2013, 15:30
|- - darkbyte   QUOTE (jmvalin @ Mar 13 2013, 16:30) Actu...   Mar 13 2013, 17:19
|- - jmvalin   QUOTE (darkbyte @ Mar 13 2013, 12:19) Str...   Mar 13 2013, 21:10
- - polemon   All features I'd like to see in opus-tools, ha...   Jun 24 2013, 16:11
- - NullC   QUOTE (polemon @ Jun 24 2013, 08:11) All ...   Jun 27 2013, 11:25
- - polemon   QUOTE (NullC @ Jun 27 2013, 12:25) well, ...   Jun 28 2013, 05:55
- - NullC   QUOTE (polemon @ Jun 27 2013, 21:55) QUOT...   Jul 1 2013, 16:23


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