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How to cut the large audio file to small file?

Hi, I found my iTunes refuse to sync my audio files into my iPhone. Then realized that thet might be too large, all around 10MB a piece. Would like to know what is the best and easy way to cut the big files into smaller mp3 files in order to mainly use them on iTunes with my iPhone 3G and Mac OS X SL,10.6.8.


Thank you very much.

iPhone 3GS, iOS 5.0.1

Posted on Mar 1, 2012 9:55 PM

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21 replies

Mar 2, 2012 5:38 AM in response to lifromclayton

When syncing select "Convert higher bitrate songs to 128 kbps AAC" - http://forums.macrumors.com/showthread.php?t=303772 - discussion from 2007 This will convert the song to a smaller format for the device. Using this method instead of the convert format method suggested by an earlier poster means you will not end up with two copies of your music, one in the original format and the other in the smaller format. You will only have one version actually on your computer and this will save space and clutter.


If you do not mind having two copies: iTunes: How to convert a song to a different file format - http://support.apple.com/kb/HT1550 - including information about different formats and discussion about compression.

Mar 2, 2012 4:19 PM in response to lifromclayton


Hi, I found my iTunes refuse to sync my audio files into my iPhone. Then realized that thet might be too large, all around 10MB a piece.

Li from clayton,


10 MB is not that large for a music file. At the common encoding rate of 256 kb/s, 10 MB is just a 5 minute song. People put those on their iDevices all the time.


You can certainly convert to a lower bit rate format and try again, but be aware that you probably have some issue other than file size that is going on.

Mar 7, 2012 7:33 PM in response to lifromclayton

Li,


The easiest way to that is with an audio editor.


But if you want to do it with just iTunes, here is the procedure: Right-click the library entry for the big file, Get Info, go to the Options tab, and set the Start Time and Stop Time to include the section you want. OK to save it. Then right click again, and choose "Create MP3 version." This will create a new smaller file with just the portion you selected.

Mar 8, 2012 6:37 AM in response to ed2345

Thank you very much. I just down load a free software called AutoMP3Splitter. It was able to cut all the files into 10min long/1.88MB. It played in iTune on the Mac very well but again the iphone just refused to take any in when Sync. Is that possible the labels of those files should be in certain format/pattern?


Actually, the iTune showed Sync possess in that indication bar but they simply just don't show up in the iphone/Don't know where they went.

Mar 9, 2012 1:42 PM in response to lifromclayton

Li, Just thinking about this, I'm suspicious that the problem is in the sample rate that AutoMP3Splitter is applying.


Can you take one of the problem files (that works in iTunes but does not sync to the iPod), highlight it in the library, File > Get Info, go to the Summary tab, and report back with the "Bit Rate" and "Sample Rate" that you see there?

Mar 9, 2012 9:15 PM in response to ed2345

Report: The before cut and after cut: Bit Rate: 24kbps and sample Rate: 22.050 KHz. format MPEG -2, Layer 2, volume -1.7dB.

Channels: Mono.


The file that could play in iphone: Bit Rate: 64kbps, sample Rate, same. format MPEG2, layer 3, volume-3.0 dB

Channels:Joint Stereo.


Now I have to make the files of 24kbp into >64 kbp? If so, is that possible?

How to cut the large audio file to small file?

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