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LAME MP3 encoding

 
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craig



Joined: 13 Nov 2006
Posts: 13

PostPosted: Mon Nov 14, 2011 2:42 pm    Post subject: LAME MP3 encoding Reply with quote

I am encoding some 96 kHz/ 24-bit sound files to MP3's with Amadeus Pro 1.5. I am using the advance option '--preset extreme' with 'overrides all other settings' checked. I notice that when I read the MP3 back into Amadeus, they show up as 48 kHz/16-bit files. I have a couple questions:

Does Amadeus pass the 24-bit data to lame or does it convert it to 16-bit first?

Also, I notice the following error messages in the Console. Is that an important error?

11/13/11 1:46:30 AM Amadeus Pro[4223] Set Samplerate: ??po
11/13/11 1:46:30 AM Amadeus Pro[4223] Set bitrate: ?ohw
11/13/11 1:46:30 AM Amadeus Pro[4223] Get bitrates error: 2003332927 '?ohw', change to 44.1kHz...

I am asking because, while the MP3 quality is decent, I find the original sounds noticeably better. I thought that the 'extreme' settings should produce pretty comparable sound so I am wondering if I am doing something wrong along the way.

Thanks
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Martin Hairer
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Joined: 08 Nov 2006
Posts: 1615

PostPosted: Tue Nov 15, 2011 3:12 pm    Post subject: LAME MP3 encoding Reply with quote

Quote:
Does Amadeus pass the 24-bit data to lame or does it convert it to 16-bit first?

Lame only takes 16-bit input. AFAIK, this is the same for every Mp3 encoder.

Quote:
Also, I notice the following error messages in the Console. Is that an important error?

11/13/11 1:46:30 AM Amadeus Pro[4223] Set Samplerate: ??po
11/13/11 1:46:30 AM Amadeus Pro[4223] Set bitrate: ?ohw
11/13/11 1:46:30 AM Amadeus Pro[4223] Get bitrates error: 2003332927 '?ohw', change to 44.1kHz…

No, that's harmless.

Quote:
I am asking because, while the MP3 quality is decent, I find the original sounds quite a bit better. I thought that the 'extreme' settings should produce pretty comparable sound so I am wondering if I am doing something wrong along the way.

You may want to use a lossless codec instead, like FLAC or Apple Lossless. Regards,

Martin

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HairerSoft
http://www.hairersoft.com/




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