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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