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iDVD Secrets > iDVD Secrets - Pg. 449

Note: Don't confuse a disk image with a project archive; they're two very different beasts. A disk image is a virtual disk, a bit-for-bit copy of the data that would appear on an actual, physical DVD--it just happens to be stored on a hard drive rather than a DVD. Project archives, in contrast, contain all the source project material used by iDVD. The only thing that can read or "play back" a project archive is iDVD itself. Disk Images and External Burners To turn an iDVD project into a disk image, save it. Then, choose FileSave as Disc Image (Shift-c-R). Choose a fle name (for example, Summer Fun.img) and a loca- tion, and then click Save. Now wait as iDVD compresses your movie data and saves it to disk. All of this takes just as long as an actual DVD burning, so now's your chance to catch up on some magazine reading. When it's all over, you'll fnd a new .img icon--a disk image--on your desktop. Disk images are amazingly high-octane, cool stuff for two reasons: ·Youdon'thavetoburnadisctowatchyourmovies. Mac OS X's DVD Player program can play back a disk image just as though it's a real DVD. You see all the menus, slideshows, and other iDVD features you've grown to love. As shown in Figure 18-13, the trick is to open the Video_TS folder. Never heard of it? Well, it's an important folder on every DVD ever made--it's where all the video fles reside--and there's one on your disk image, too. Figure 18-13: Apple's DVD Player utility (in your Applications folder) can play back disk images as well as physical DVDs. In the Finder, double-click the disk image to make the virtual DVD appear on your desktop. In DVD Player, choose FileOpen Video_TS Folder, as shown at top. Bottom: In the dialog box, choose the Video_TS folder you want to play. Navigate into the disk im- age, choose the Video_TS folder, and click Choose. Press the Space bar to start playback. chapter18:idvdsecrets 449