Re: [SLUG] MP3 inflation

From: Ron Youvan (ka4inm@tampabay.rr.com)
Date: Tue Jan 16 2007 - 21:44:48 EST


>> >> I have been moving some music from CD's to a HD I have.
>> >> I notice that on the CD it is one size but as the file is moved to
>> the HD it grows larger,

>> Chuck, when you say "moving" are you using the copy (cp) command, or
>> loading
>> the MP3 file into an application, then saving it to the hard drive?
>> There
>> should be very little difference if you copy. But if you load the MP3
>> file
>> into an application and save, then you are actually decompressing the
>> file,
>> then recompressing - that could make a huge difference in file size.

> Ken when I stick the CD in the drive I get a window that ask me if I want
> to open it, play it, rip it, play it with (gives the usual list of
> guilty ones).

   We are going to figure out if we are talking about a "music CD" which
contains wav files or a DATA CD that contains mp3 files.

   Music CDs are not mounted, they are ripped to the hard drive,
and unless they are converted on the fly they land as wav files.
DATA CD that contains mp3 files must be mounted before being accessed,
then they are handled the same as text or program files.

   The same song as a wav file will be on teh oprdder of 25 to 50 Megs
and as a mp3 it would be 2-5 Meg depending on sample rate and other
settings.

-- 
    Ron  KA4INM
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