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Chapter 4. iDVD > Supported disc formats

Supported disc formats

You need blank discs on which to burn your project. iDVD prefers a type of “general media” disc called DVD-R (pronounced DVD dash R). iDVD is also compatible with other disc media formats:

DVD+R (DVD plus R) is a similar, but competing format.

DVD-RW (DVD dash RW) and DVD+RW (DVD plus RW), which are rewritable media.

Note: All SuperDrives (Apple's internal DVD burner) support DVD-R media, but older SuperDrives may not support the other media types.

You can find low prices on the Internet for large-quantity bundles of discs. One of our frequent shopping sites for DVDs (and mini DV tapes for our digital video camera) is www.TapeAndMedia.com.

A DVD disc officially claims to hold 4.7 GB (gigabytes) of data. But due to various factors ranging from marketing hype to variances in techniques for translating bits to gigabytes, you really have approximately 4.3 GB of space to work with, or about 90 minutes of video (including video used in motion menus). That's still a lot of data storage, especially compared to the 650–700 MB (megabytes) of storage space you get on a CD.

iDVD allows a total of 99 movies and slideshows (in any combination) on a single DVD disc. Of course, the length of your movies, the number of images in your slideshows, and how much DVD-ROM content you want to include on the disc will affect exactly how many movies and slideshows will actually fit on your DVD.


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