[G4] M4A - M4P

[Jim Pacyga]

Apple claims that AAC is a more efficient coding algorithm than MP3.  
I.e., AAC @ 128kbps is better than MP3 @ 160 or 192 kbps.

There was an article on it somewhere.  The interesting point I found 
was that the reviewer claimed that using QT to encode music gave a 
better result than iTunes (Yes, I know they use the same library - but 
they DO NOT apparently use the same settings).

M4A and M4P are identical except that the M4P is PROTECTED - e.g., you 
can not send these to your friends - you must be authenticated as they 
are part of a content protection scheme.

On 11 Jun 2004, at 06:14, zhmmy harper wrote:

> What is the benefit of using M4A or M4P, or is it mainly for the 
> benefit of the iTunes Music Store?
>
>
>> M4A - AAC
>> M4P - AAC protected (the kind you might download from iTunes Store)
>>
>> It is different from MP3. You can change the way you encode in iTunes 
>> under Preferences.
>>
>> These formats often don't have well known codecs for windows machines 
>> but you could check places like http://versiontracker.com for windoz.
>>
>> On 10 Jun 2004, at 07:01, Wilkin, Wayne (Mass) wrote:
>>
>>> The only thing that won't play is the apple music. I can burn other 
>>> music
>>> fine (if you know what I mean by other). If I mix them up with apple 
>>> music
>>> and the "other music" the "other music" will play from the cd but 
>>> the apple
>>> music won't. Apple has some sort of new file extension for music 
>>> now, it's
>>> m4a's.
>
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