DV-AVI is compressed. I believe it is in the region of 5.1.
It is the std used for recording to minidv tapes, and if you save to your
computer as a dv-avi and then save your movie as a dv-avi you will not
compress it any more. If you add transitions then theoretically you will
lose a small amount of quality, but I doubt you will ever be able to tell it
is so very very small.
When you encode to mpeg2 for dvd this will use about 20.1 compression.
