Filed under: iTunes
A little-heralded feature of iTunes 9.1 is the ability to convert higher bitrate songs to 128kpbs AAC files for iPhone or iPod touch sync with iTunes. How do you do it? It's a simple check box option in the Summary tab when your iPhone appears in the iTunes source list. When the box is checked, on the next sync, all your songs on your iPhone that are not 128kpbs AAC files will be removed and then re-added, being converted on the fly.
The first time I did it, about 400 songs on my iPhone needed to be converted. It took about ten minutes to do the conversion. Once the first large conversion is done, the iPhone syncs your music as fast (or slow) as it ever did (unless you're refreshing your iPhone's library every time you sync). If you keep 'convert higher bitrate songs to 128kpbs AAC files' checked, any new songs added to your iPhone will automatically be converted.
It's important to note that this on-the-fly conversion does not alter your original files inside your iTunes library -- those will remain at whatever bitrate and in whatever file format you had them in.
How well does this work? I saved a whopping 1.5GBs of space on my 8GB iPhone. Others here at TUAW saved between 2-5GBs. Of course, how much space you save will be dependent on what bitrate and file type your songs are now. The guys here who saved 5GB said their conversions took a few hours initially. As for audio quality. I didn't notice a bit of difference on my $20 headphones. However, I'm not an audiophile. If you've got an ear for music and are using the latest Shures, you might notice some quality degradation.
TUAWiPhone 101: Save space on your iPhone without removing a thing originally appeared on The Unofficial Apple Weblog (TUAW) on Tue, 06 Apr 2010 11:00:00 EST. Please see our terms for use of feeds.
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