Hardware Reference
In-Depth Information
a Retina display, in which case you'll almost certainly notice), but you can have more video
files on your iPad because they take up less space.
The conversion from HD to standard definition takes a long time, so be pre-
pared for very long sync times when you sync new HD video and have this option selected.
If you plan to use Apple's Lightning Digital AV Adapter ($49) or Apple TV ($99) to display
movies on an HDTV, consider going with high definition. Although the files will be bigger
and your iPad will hold fewer videos, the HD versions look spectacular on a big-screen TV.
There's more info on both accessories in Chapter 17 .
Convert Higher Bit Rate Songs to 128 Kbps AAC: If you want songs with bit rates higher
than 128 Kbps converted into smaller 128-Kbps AAC files when you transfer them to your
iPad, select this check box.
A higher bit rate means that the song will have better sound quality but use a lot of storage
space. Songs that you buy at the iTunes Store or on Amazon, for example, have bit rates of
around 256 Kbps. So a 4-minute song with a 256-Kbps bit rate is around 8MB; convert it to
128-Kbps AAC and it's roughly half that size (that is, around 4MB), while sounding almost
as good.
Most people don't notice much (if any) difference in audio quality when listening to music
on most consumer audio gear. So unless you have your iPad hooked up to a great amplifier
and superb speakers or headphones, you probably won't hear much difference, but your iPad
can hold roughly twice as much music if you choose this option. Put another way, we're very
picky about our audio, and we both select this option to allow us to carry more music around
with us on our iPads. And neither of us has noticed much impact on sound quality with the
headphones or speakers we use with our iPads.
Manually Manage Music and Videos: To turn off automatic syncing in the Music and Video
panes, select this check box.
One more thing: If you decide to select the Prevent iPods, iPhones, and iPads from Syncing Auto-
matically check box on the Devices tab in iTunes Preferences (that's iTunes Preferences on a Mac
and Edit Preferences on a PC), you can still synchronize manually by clicking the Sync or Apply
button in the lower-right corner of the window.
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