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Best Quality for Lossy Encoding of Audiobooks?
encoder
post Nov 27 2012, 15:26
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Obviously if I don't want FLAC. But I also don't want it to be (much) distinguishable from the original. Storage space is not really an issue nowadays. What do you use? MP3 or OGG file format? Which settings? Which software? I have Fre:Ac. I would prefer an easy to use Windows solution, no command lines. What settings to use?

By the way what is the best audio grabber program nowadays? Is it still EAC? I'm really out of this game lately. smile.gif

Oh, and how to create separate audio tracks for gapless playback on any basic player? I just see your Wiki... There used to be a command line solution to cut the audio files at the block's ends so every simple player can play 'em back gaplessly. It worked for MP3. Does it work for OGG?

Thanks!

This post has been edited by encoder: Nov 27 2012, 15:33
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eahm
post Nov 28 2012, 19:36
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Just tested AAC Apple True VBR Q18 (~75kbps) (the average of the full audiobook was 43kbps) and I coultdn't distinguish it from the original, you can go much lower than expected with speech.

This post has been edited by eahm: Nov 28 2012, 20:04


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eahm
post Dec 5 2012, 00:07
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QUOTE (eahm @ Nov 28 2012, 11:36) *
Just tested AAC Apple True VBR Q18 (~75kbps) (the average of the full audiobook was 43kbps) and I coultdn't distinguish it from the original, you can go much lower than expected with speech.

My test on one audiobook:

FLAC: 2.21GB

AAC-LC True VBR (qaac/Apple) -V18 (~51kbps): 240MB

HE-AAC (qaac/Apple) -v32 --he (~33kbps): 151MB

HE-AAC (fhgaacenc/Fraunhofer) --vbr 1 (~31kbps): 145MB

Opus (0.1.5 from opus-codec.com) --vbr 32 (~34kbps): 152MB

MP3 (LAME 3.99.5) -V 7 (~77kbps): 351MB

This post has been edited by eahm: Dec 5 2012, 00:27


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IgorC
post Dec 5 2012, 03:04
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QUOTE (eahm @ Dec 4 2012, 20:07) *
Opus (0.1.5 from opus-codec.com) --vbr 32 (~34kbps): 152MB


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QUOTE (jensend @ Nov 28 2012, 15:50) *
A brief bit about Opus's ability to deal with mixed content: if you have an audiobook with quite a bit of music content, then for the time being, to get the full benefit of Opus's ability to code both speech and music, you need to be using an encoder newer than the one currently offered at opus-codec.org (for instance, this one)and you need to be encoding at 30kbps or higher.

Or this one

This post has been edited by IgorC: Dec 5 2012, 03:05
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Posts in this topic
- encoder   Best Quality for Lossy Encoding of Audiobooks?   Nov 27 2012, 15:26
- - eahm   You can hear difference if you convert in 64kbps, ...   Nov 27 2012, 15:45
- - Dynamic   QUOTE (encoder @ Nov 27 2012, 14:26) By t...   Nov 27 2012, 18:06
- - DonP   Most of the books on my portable I have in speex. ...   Nov 28 2012, 03:35
- - jensend   As far as the quality-bitrate tradeoff goes, Opus ...   Nov 28 2012, 05:34
|- - DonP   QUOTE (jensend @ Nov 28 2012, 00:34) As f...   Nov 28 2012, 16:04
|- - Dynamic   I agree that at its speech-codec settings (when it...   Nov 28 2012, 19:13
- - encoder   Thanks for the info! This Opus thing looks int...   Nov 28 2012, 13:53
|- - jensend   encoder: Yes, Opus is also somewhat better than th...   Nov 28 2012, 18:23
|- - DonP   QUOTE (jensend @ Nov 28 2012, 13:23) enco...   Nov 28 2012, 19:16
|- - IgorC   QUOTE (DonP @ Nov 28 2012, 15:16) I encod...   Nov 28 2012, 19:27
|- - DonP   QUOTE (IgorC @ Nov 28 2012, 14:27) 1.0.1 ...   Nov 28 2012, 20:32
- - marc2003   QUOTE Default is king, ain't it? no. the ...   Nov 28 2012, 14:53
- - Seren   10kb/s for music I wonder the day this becomes ...   Nov 28 2012, 16:26
- - eahm   10kb/s so 1.25KB/s? For my previous post, of cour...   Nov 28 2012, 16:37
- - eahm   Just tested AAC Apple True VBR Q18 (~75kbps) (the ...   Nov 28 2012, 19:36
|- - eahm   QUOTE (eahm @ Nov 28 2012, 11:36) Just te...   Dec 5 2012, 00:07
|- - IgorC   QUOTE (eahm @ Dec 4 2012, 20:07) Opus (0....   Dec 5 2012, 03:04
- - jensend   A brief bit about Opus's ability to deal with ...   Nov 28 2012, 19:50
- - DonP   For speech, 12 kb/s opus is working fine on the po...   Nov 30 2012, 19:21
|- - jensend   QUOTE (DonP @ Nov 30 2012, 11:21) I hope ...   Dec 1 2012, 01:31
- - eahm   Thanks IgorC. AAC-LC True VBR (qaac/Apple) -V9 (~...   Dec 5 2012, 06:39
- - IgorC   It is recommended to use ABR instead of VBR for e...   Dec 5 2012, 15:01
- - eahm   I don't test or keep track of MP3 too much, I...   Dec 5 2012, 18:29


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