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Old 03-10-2011, 09:29 PM   #1
LAPIII
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What is the best MP3 compression format?


I want to compress mp3's to as small as possible. I am willing to download any compressor, but Gnome's default does:

.7z
.ar
.bz2
.cbz
.exe
.gz
.jar
.lzma
.tar
.tar.7z
.tar.bz2
.tar.gz
.tar.lzma
.zip
 
Old 03-10-2011, 09:31 PM   #2
MS3FGX
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MP3s are already a compressed format, they won't get much smaller. Certainly won't be enough of a size difference to make the compression/decompression time worth it.

If you want to make an MP3 file smaller, re-encode it at a lower bitrate or drop down to mono.
 
Old 03-10-2011, 10:01 PM   #3
jlinkels
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Some explanation: all those formats you mention are lossless formats and they compress based on smart encoding of certain sequences. In other words, the algorithms remove unnecessary data and store it in a smart way. Compression is not that high because you can only delete information to a certain level if you want to restore it later.

MP3 compression works by removing sounds we do not hear anyway and removing any redundant data. Any. That means there is not any redundancy left to be removed my a normal compression program.

You can't recompress MP3 or JPG files because there is nothing to be taken out. The advice by MS3GFX is correct, you can decompress the MP3 files and then compress them again so even more infomation is taken out, but in a lossy way. A lossy algorithm can take out more data, at the cost of reduced fidelity.

jlinkels
 
  


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