Re-encoding MP3 into AAC

I have lots of 256 kbps MP3 musics. I am thinking of reducing file size so I can put more music into my iPod shuffle. If I just convert those MP3 to 196 kbps AAC, will the converted file be the same quality as ripping CD with the same 196 kbps AAC encoding? Thanks!

Posted on Sep 19, 2005 8:04 PM

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18 replies

Sep 21, 2005 12:22 AM in response to Chitpong Kittinaradorn

I am in search of an answer to my problem also connected with music dowloaded to my Itunes from an MP3 CD. Can I not move this music to my IPOD? From what I am reading on this discussion- sounds like I have to change it to ACC. Did I get that right? So where do I change it- do I select the songs in my Itunes Library and then ask for it to be converted to ACC? I am a total novice an would appreciate some real help.
Urgent!!

Sep 21, 2005 12:43 AM in response to Aruna Lakhra

Welcome to discussions, Aruna! You should be able to move these mp3 files into iTunes as mp3 is a supported format. If you are having trouble, I need a little more information. The first question I need to ask is how was the mp3 CD made, did you burn it yourself? Also, I need to know the source files that the CD was made from, for instance were the downloads from another website. If so, what website?

Sep 21, 2005 2:56 AM in response to StarDeb55

Thx StarDeb for respondig. The MP3 was made by a friend from his personal collection of CDs. The disc he used was a CD-R 52X 700 MB /80Min.
I was able to copy the music on to iTunes, it is in my Library now, and I can play it fine. However when I try and select this MP3 list of songs from my library to the Mini, it does not happen. I usually have no problem in selecting an creating new play lists on my mini from my Itunes. The starnge part is that 3 of the songs in the selection get transferred, always the same 3.
So my question is: does the IPOD MINI not able to get songs in the MP3 format. Do I have to change them to something else? I was researching on their site and from what they said the IPOD can play songs encoded with MP3 (from 32Kbps to 320Kbps)-whatever that means.

Does this help? Please help!

Sep 21, 2005 3:15 AM in response to Aruna Lakhra

Aruna,

To see bitrate (kbps) of MP3 files, in iTunes go to edits > view options, then check "bit rate". The bitrate will show in the playlist. You might have to scroll the window to the right to see them. You can also see file types (MP3, AAC...) by checking "kind".

To burn MP3 music as a normal audio CD, select the files/playlist you want to burn, then go to file > burn playlist to disc. You might want to configure burning speed to be around 8x instead of full speed as most CD-RW drive will not burn properly in full speed. Just go to edits > preferences.

Sep 21, 2005 3:59 AM in response to Chitpong Kittinaradorn

Thx,
isn't the music from the MP3 in Itunes still in the compressed format (of the MP3) ? so if I burn a CD then won't it also be a MP3 Compressed?
2) What is the ideal type of discs to buy for burning CDs?
3) I checked nd under Kbps these songs are all 112 Kbps, and Kind: MPEGFile Auio
4) Could there be some kind of prtection on these?

See I am a novice?

Sep 21, 2005 4:09 AM in response to Aruna Lakhra

MP3 is a compressed format itself. When you burn an audio CD from MP3 files, those files will be converted to audio CD format, so that your CD player can read. You will lose sound quality because you are trying to convert a compressed, lower bitrate MP3 files (eg. 128-256 kbps) to an audio CD format (1411 kbps).

You can use any CD-R disc for audio CD. Use one of better quality, it will last longer, and write at lower speed (4-8x).

MPEG File in iTunes means it's MP3. In fact, MP3 is an abbreviation of "MPEG Level 3". Bitrate 112 kbps should mean your music is encoded at 128 kbps variable bit rate (VBR), so the rate that iTunes read might be a little bit lower than 128.

I don't know if there's any protection on MP3. Anyone know?

Sep 21, 2005 6:51 AM in response to Aruna Lakhra

In addition to an audio CD format, iTunes also allows for creation of an MP3 CD. Basically the CD is filled with around 150 mp3 files. Note you must have something that will play the mp3 CD - like: another computer; or a player that supports mp3 CD.
I have never had a problem with Verbatim CDR.
112Kbps ? That be low quality - what are these? Audio books?
I know of no mp3 DRM.

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Re-encoding MP3 into AAC

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