An ISO file, often called an ISO image, is a disk image of an ISO 9660 file system, which is also in fact an "image" of an entire CD or DVD. The entire contents of a disc can be perfectly represented in a single ISO file.
You can think of an ISO file like a box that holds all the parts to something that needs built - like a child's toy you might buy that requires assembly. An ISO file is the same way. The file itself is no good unless it can be opened, assembled, and used. The most common way to make use of an ISO file is to burn the ISO file to a CD or DVD. It's a different process than burning an MP3 file or a document to a disc because your CD/DVD burning software must "assemble" the contents of the ISO file onto the disc.
And if there are some ISO image about some Movies, how to open them or share them on TV?
Just follow this guide "How to play ISO on Mac for free" to open them on Mac OS X, including Snow Leopard?
iSkysoft DVD Buner for Mac is a Mac software which can help Mac users to burn not only various formats videos to DVD, but also burn ISO file to DVD.
Just follow this guide to burn ISO to DVD on Mac OS X (including Snow Leopard).
Then you can burn your favorite ISO files to DVD on Mac, which also supports Snow Leopard.
After that, Just share your ISO files on TV or DVD player with your friend.
If you also want to backup these burned DVDs, just follow this guide to Bakcup DVDs on Mac OS X.
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