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Lowering Music Bitrates


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Any good auido editor can do this, but depending on what the original source was/ what your sending it to in quality, the sound could get really bad. If it's just WAV to .mp3, then the degredation shouldn't be noticeable (provided you use a good mp3 bitrate). If it's .mp3 to lower quality .mp3, then the sound will be bad, if not outright terrible.

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decode them with winamp, then re-encode them in mp3Pro format. you can encode them at a low bitrate such as 64 or 96 and it will sound as good if not better than a normal 128 or 192 bitrate mp3.

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There's a program in the windows XP Plus! pack which lets u convert ur entire music collection to lower bit-rate wma's with just a couple of clicks.

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If you reencode something, it will always sound badder than the original encode.

You can't reencode something and think you raise the quality.

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Tom said it right. In case you didn't know, these formats (with the exception of the wave) are all lossy, meaning that you will lose some frequency cuts to have such a small file.

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It depends what bitrate the mp3's are, if they are 160/192 or higher then they can be reduced to 128k without any real noticable loss in sound quality, if they are 128 then reducing the bitrate lower and keeping them as mp3s will produce a very noticable loss in quality, however converting them to 96k wma shouldn't produce a significant loss in quality, M$ claim even 64k wma is cd quality but if the music is rock music then it does often have distortion, but if its dance music then 64k wma are fine.

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Originally posted by Tom Servo

You can't reencode something and think you raise the quality.

At least not for audio... I re-encode MPEG2 streams I encode from TV and run it through several filters and encode it in much lower bitrate Divx 5.02 - Noise is removed and motion is improved :)

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I saved 5gig converting 2000 MP3s to 128 birate

decode to wav. using Mp3 To Wave Converter

back to MP3 using Lame encoder & A RobFantastic MP3 Encoder

;-)

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At least not for audio... I re-encode MPEG2 streams I encode from TV and run it through several filters and encode it in much lower bitrate Divx 5.02 - Noise is removed and motion is improved
What you did wasn't just re-encoding. You also processed it to improve quality. Would you have had the same results if you didn't "run it through several filters"?
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