Hi Walter,
AAC is MPEG-4 audio.
MPEG-1, Layer 3 is mp3
Files shown as .M4P, they are DRM-protected (copyrighted) files you
purchased in iTunes store and you cannot convert them directly to
another format in iTunes because of that protection.
As I said in my previous email to WAMUG ... import your music into
iTunes in AIFF format, then if you want to compress the audio (losing
quality of course), convert to AAC or MP3.
Converting doesn't over write the original file it creates a copy of
the song in the format you have chosen so that you have the option to
continue using the original. This allows anyone converting from
uncompressed or lossless formats to keep the original to play through
their computer or hi-fi and (for instance) update the compressed file
to an iPod so they can get more songs on.
If you want to conserve space you can delete the original file.
Are you seeing both the files .... one before you convert & then two
after you convert ... the original & the converted?
Cheers,
Ronni
On 16/03/2008, at 9:47 PM, F.W. Hänel wrote:
Thanks Ronni,
most of my songs originate directly from purchased audio CDs
(Deutsche Grammophone) and are shown
in "Summary" of the song as AAC. But others imported through
Acquisition or Lime Wire are shown as
MPEG audio file (MPEG-1, Layer 3)
To convert those to AAC seems to work as I can see the progress bar
completing the job - but in
the "Summary" of the song nothing has changed, it is still shown as
MPEG audio file. Why ? Was it
converted or was it not converted ?
Confused,
Walter
On 16/03/2008, at 9:34 PM, Ronda Brown wrote:
Hi Walter,
Is the track you are trying to convert a mp3, m4a or mp4, or is it
a m4p format (Protected audio from iTunes Music Store)?
Cheers,
Ronni
Begin forwarded message:
From: Ronda Brown <[EMAIL PROTECTED]>
Date: 16 March 2008 9:18:58 PM
To: WAMUG <[email protected]>
Subject: Re: iTunes
Hi Walter,
No, it won't ....
Converting a compressed file such as MP3 to an AIFF (which is
original full quality,Uncompressed same as on a CD) won't work.
AAC (Advanced Audio Coding) provides audio encoding that
compresses much more efficiently than older formats, such as MP3,
yet delivers quality rivalling that of uncompressed CD audio.
Because MP3s are created with lossy compression, the information
they contain about the music is not a perfect copy of the
original. So you would be working from an imperfect source. Even
if the format you were converting to allowed better audio quality
than MP3, your converted files would not be able to make use of
this extra quality, because you would be working from an MP3 file.
Conversion and compression can only ever make quality stay the
same or get worse; they can never make quality improve.
I always import my music into iTunes as AIFF (full quality) and
then convert to MP3 if I want to burn a MP3 CD.
Cheers,
Ronni
On 16/03/2008, at 8:20 PM, F.W. Hänel wrote:
Thanks Ronni,
I have done that and tried to convert one song (in this case to
Aiff just as a test)
but that song under "Get Info" "Summary" shows up as MPEG audio
file. Should it not change to Aiff ?
Confused, Walter
On 16/03/2008, at 4:35 PM, Ronda Brown wrote:
On 16/03/2008, at 3:54 PM, F.W. Hänel wrote:
Hi Group,
what is the secret converting a song in an iTunes playlist from
MPEG Audio File to
AAC ?
When I start the "Convert selection to AAC" process in the
Advanced pull-down menu
some conversion seems to take place and an audio alert tells me
the conversion was
done - but when I look up the details on that song in the
summary it still shows
under "Kind": MPEG audio file and not AAC.
So was the conversion done or not ? Why does it not change to
AAC ?
Hi Walter,
I would not recommend converting from MP3 to AAC as you will
simply lose quality.
Converting will not improve the quality from what you start with.
1. In iTunes > Preferences
2.Click the Advanced button, then click the Importing button at
the top of the window.
3. From the Import Using pop-up menu, choose the encoding format
that you want to convert the song to, then click OK to save the
settings.
4.Select one or more songs in your library, then from the
Advanced menu, choose Convert Selection to AAC (The menu item
changes to show what's selected in your Importing preferences)
Cheers,
Ronni
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