![]() Normally, a menu is a list of commands that you access from the menu bar at the top of the screen. iDVD stores all of its related files in the project file itself, which is a package. The iDVD project file appears by default in your Documents folder (within your Home folder), and ends in the extension ".dvdproj". If you just launched iDVD independently, you can create a new project or open an existing project from the File menu doing so closes the current project (only one project can be open at a time). If iDVD is currently running because you shared a movie from GarageBand, you don't need to open, create, or save your project-it's all done for you. You can store a DVD-Video project on a disc that also contains DVD-ROM data, which makes the disc a Hybrid DVD. The Finder can create DVD-ROM discs when you're backing up data, for example. This is just like using a CD-ROM, only with more storage capacity. When you store just data on the disc, without the need to play back automatically in DVD players, the disc is in DVD-ROM format. The folders and filenames are specific: a folder called VIDEO_TS stores all of the movie's video and audio files. A DVD that contains just a movie (and its associated menus and extras) is in DVD-Video format. The way a DVD's data is stored on the disc depends on how the disc will be used. The iLife installation disc is an example of DVD-ROM.Ī blank DVD contains no information or directory structure. DVD-Read-Only-Media discs cannot be burned because their data has already been written to disc. They don't offer more storage or features, and cost about the same as the -R and -RW discs. These two formats use a different method of recording data than DVD-R and DVD-RW. DVD-Rewritable discs can be erased and burned hundreds of times, which make them great for testing purposes (you can burn iterations of your project onto one DVD-RW disc, instead of making lots of DVD-R coasters). When purchasing DVD-R media, be sure to get DVD-R (General) the other type, DVD-R (Authoring), is used in professional DVD writers and is not supported by iDVD. DVD-Recordable discs can be burned once, and then played back in nearly any consumer DVD player and DVD-capable computer. DVD physical formatsīefore you rush out and buy a mega-pack of blank DVDs, take a few minutes to acquaint yourself with the different formats that are out there. In addition to storing all this data, DVDs can be set up so they automatically play movie files and include a menu system to give you control over how the content plays. The Digital Versatile Disc is quite a wonder: it's physically small, like a CD, but packs nearly seven times the data into the same space: a CD stores roughly 700 MB, while a DVD holds approximately 4.7 GB. This chapter offers a look at iDVD's interface and major functions in order to give you the foundation you'll need for the next chapters that deal with building projects and customizing them. An iDVD project, whether you like it or not, is polished, which goes a long way toward making people think, "Wow, I had no idea he was so talented." Apple has clearly put a lot of thought into the DVD themes that ship with iDVD, making each one something you'd actually want to show off to people. IDVD also does something that no other program can do: It gives you style. More importantly, it manages the MPEG-2 compression needed to cram multiple gigabytes' worth of data onto a shiny platter the size and shape of a regular audio CD. While you're focused on choosing which photo should appear on the title page of your DVD, iDVD handles the specifics of building the structure necessary for most consumer DVD players to play back your masterpiece. Quite a lot of highly technical work goes into creating a DVD-in the background. True, it's not the same as seeing the picture at high-definition quality, but it's a start. In the meantime, iDVD imports HD projects with ease and converts them into widescreen DV format. (Software such as Roxio Toast can do so, with the addition of an external Blu-ray disc burner.) As such, iDVD does not support Blu-ray either. Blu-ray may have won the HD format war, but currently no Macs support burning to Blu-ray discs. IMovie can create HD movies, but don't expect to create a high-definition DVD for now.
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