- In order for the iPod to play video files, they must be in the proper format. The iPod can use two types of video file: MPEG-4 or a variation of AVC called H.264. Both of these formats provide excellent quality while maintaining relatively small file sizes. However, MPEG-4 does allow a higher bit rate (or quality setting), which can result in larger file sizes. If you import a video file into iTunes that is not in MPEG-4 or H.264 format, iTunes may convert it for you. However, iTunes does not recognize all formats, and it may indicate that the file is incompatible. The iPod Touch and iPhone display video at a resolution of 480 pixels wide by 270 pixels high.
- When you plug your iPod into the computer, iTunes immediately recognizes that an iPod has been connected. The program scans the serial number of the device to identify it. If it recognizes the iPod, it will begin syncing, or transferring files, automatically. If it does not recognize the iPod, it will ask if you wish to sync the device to this iTunes library. This prevents the iPod from being used as a tool for illegally sharing files between computers. For each iPod that syncs to your iTunes library, you can specify that you would like for all video files to transfer, or only certain video files. You can also choose not to sync videos.
- The iPod is like a miniature computer. It contains a processing chip, which decodes video files into the moving images you see on the screen. It also contains a hard drive, which stores all of your video and song files. You may notice that the iPod can play back video very smoothly, perhaps even more so than your computer. There are several reasons for this. Since the iPod will only play a limited number of file formats, and the operating system is lightweight, there are fewer processes running simultaneously. This allows the iPod's processor to focus on one task, whereas your computer may handle multiple tasks at once. There are no moving parts within an iPod, unlike the hard disk drives that are found inside your computer. All of this means that video files are sharp and clear, and play back without stuttering or hiccups. The iPod features a flat LCD display that makes use of advanced technology, allowing the device to play several hours of video on a single battery charge.
