Right! "AVI" is not a single format. It is a "container" or "wrapper" format and it can contain audio/video with any type of compression. There is a header in the AVI file that tells the playback software what codec to use.
I'm trying to share a video in the AVI format.
Are you sure you want an AVI file? If you are saving the file on a DVD, why not make a "regular" video-DVD (which has MPEG-2 encoded VOB files)?
AVI/DV is what you get from a MiniDV camera, and it's
13GB per hour. This is the best format (the most trouble-free format) for editing.
The 29.97 FPS
Framerate has nothing to do with file size. The
filesize is determined by the playing time and the
bitrate, usually expressed in kilobits-per-second (kbps). You can see how kilobits-per-second can be mathematically scaled up to gigabytes-per-hour.
...and still fit it onto a 4.7 gig DVD?
Here's an online
DVD Bitrate Calculator.
29.97 FPS is the standard for NTSC video. NTSC is used in North America and Japan. It has to be 29.97 to play on an American
TV, but to play on a computer, this is NOT a requirement.
If you are making a DVD, there are many constraints for the audio & video formats. But, if you tell video Studio to make a video-DVD, it will make all of the necessary conversions for you (if it can).