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Is it possible to decrease the bitrate of an mp3 file?

B

Booster

Diamond Member
The thing is, I got a bunch of mp3s which I ripped from my legally purchased CDs. They're either in 256kbps or 320kbps for decent sound. Now that I bought an mp3 player at a discount price, it only has 64MB of RAM, and I can't fit more than 12-15 songs on it. I need lighter mp3s. But I'd have to re-rip all my CDs then. It's kinda boring.

Does anyone know if there's a way to convert 320-256kbps mp3s into 64kbps ones?

Any help would be greatly appreciated.
 
Just convert them to wav's and re-encode them to mp3. They will be a bit lower quality than a 64kbps mp3 straight from a cd, but then again a 64kpbs mp3 is gonna sound like ass either way 😛
 
I would re-rip straight from CD to 64 kbps. MP3 is a lossy compression system. Everytime you convert back to a wav and re-rip to your desired kbps you lose more than if you just straight encoded to the kbps rate you wanted.

ie.

Wav -> 256 -> Wav -> 64

will yield a much higher loss of sound quality than

Wav -> 64
 
They will be a bit lower quality than a 64kbps mp3 straight from a cd, but then again a 64kpbs mp3 is gonna sound like ass either way 😛[/quote]
Even ripping from a cd to a lower bitrate I wouldnt go under a 128 bitrate

 
Never, ever go under 128kbps. It's the bare minimum, and suitable only for portables. CDex will re-encode down to a smaller bitrate without the step of converting to WAV first.
 
Originally posted by: jaeger66
Never, ever go under 128kbps. It's the bare minimum, and suitable only for portables. CDex will re-encode down to a smaller bitrate without the step of converting to WAV first.
Click to expand...

exactly. 64br is about as enjoyable as a melted tape on a hot summer day in a 1972 Pinto.
 
Originally posted by: jaeger66
Never, ever go under 128kbps. It's the bare minimum, and suitable only for portables. CDex will re-encode down to a smaller bitrate without the step of converting to WAV first.
Click to expand...

Note that this method still does not directly reduces bitrate -- it reencodes it, just as the mp3->wav->mp3 route. The MP3 algorithm does not allow direct reduction of bitrate. The best thing would be to re-rip from the CD.

The Ogg Vorbis codec theoretically allows "bitrate peeling", which can directly reduce bitrate without the damage of reencoding, although no implementations of peeling exist yet.
 
Its really a shame that those flash memory portables don't support Ogg Vorbis. I did some testing with low bitrate music files, and a Quality Level -1 ogg (~45kbps) still sounded almost CD quality! meanwhile, the 45kbps mp3 sounded like it was comming through a telephone. Even the new AAC mp4 format didn't sound as good as the ogg.
 
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