Originally Posted by jan
CD-ROM is limited to 600, 650 or 750 MB, whereas DVD is 4.7 or 9 GB. Windows Movie Maker will give you about 150 minutes of video on a 4.7GB DVD. I've never used CD for video because compressing the video to fit 600-700 MB destroys the quality to a point where it's almost unviewable.
Worrying about whether you use DVD+R or DVD-R is almost a no-brainer, as most (if not all) DVD players recognise either type. Although in my experience, DVD-R writes slower, even if they are rated at the same speed as DVD+R.
Avoid using rewriteable or RAM disks (DVD RW and DVD RAM) for projects that are supposed to be "permanent" in nature.