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Author Topic: mp3 encoding questions....  (Read 1425 times)

bellipod

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mp3 encoding questions....
« on: November 11, 2003, 04:06:18 pm »
What're the best settings for encoding mp3s?  I have --alt-preset extreme/ q 0  in there right now, is that correct syntax (with those spaces and everything)?   I don't think it is because it is freezing up MC every time I try it.
Any recommendations?
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LisaRCT

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Re:mp3 encoding questions....
« Reply #1 on: November 11, 2003, 04:31:49 pm »
Try:

--alt-preset extreme -q 0
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xen-uno

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Re:mp3 encoding questions....
« Reply #2 on: November 11, 2003, 04:33:50 pm »
It should be just --alt-preset extreme

Have no idea what the "/ q 0" is...but it is unnecessary.

Using standard will reduce file size a bit, yet still maintain high quality. Extreme may do better on harder to encode material.

10-27

edit: From switches.html
-----
* -q 0..9    algorithm quality selection

Bitrate is of course the main influence on quality. The higher the bitrate, the higher the quality. But for a given bitrate, we have a choice of algorithms to determine the best scalefactors and huffman encoding (noise shaping).

    -q 0: use slowest & best possible version of all algorithms. -q 0 and -q 1 are slow and may not produce significantly higher quality.

    -q 2: recommended. Same as -h.

    -q 5: default value. Good speed, reasonable quality.

    -q 7: same as -f. Very fast, ok quality. (psycho acoustics are used for pre-echo & M/S, but no noise shaping is done.

    -q 9: disables almost all algorithms including psy-model. poor quality
-----

There is no point in using -q x with the presets...they already include the optimal value
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LisaRCT

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Re:mp3 encoding questions....
« Reply #3 on: November 11, 2003, 04:39:33 pm »
I have seen a -q switch in some encoder software I used to use, which denoted quality, however with the string presented here I expect that Xen is correct and it is unecessary.

If you are THAT concerned about sound quality why not give APE a go? With the price of harddrive space these days it is worthwhile if you are ripping.
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bellipod

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Re:mp3 encoding questions....
« Reply #4 on: November 11, 2003, 04:44:02 pm »
Well, the "-q 0" actually did work.  I read here http://www.ipodlounge.com/forums/showthread.php?s=&threadid=8360 that it had the best quality sound (4th post down, RandyP).  If it's not necessary though, then I could leave it off.

Thanks!
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bellipod

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Re:mp3 encoding questions....
« Reply #5 on: November 11, 2003, 04:52:57 pm »
Thank you xen-uno and LisaRCT!  ;D  I have it ripping and encoding separately, next I'll try it simultaneously, see if that works!  
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MachineHead

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Re:mp3 encoding questions....
« Reply #6 on: November 11, 2003, 05:46:40 pm »
Quote from: bellipod on November 11, 2003, 04:06:18 pm
What're the best settings for encoding mp3s?
--alt-preset standard. Prove it if you can really hear a difference.

Quote
I have --alt-preset extreme/ q 0
Why? See above.

If your looking for something that wastes bits for no real gain then keep doing what you're doing. If you demand even better try lossless.
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