to make a DVD, one approach is to take your Quicktime export,
copy it, then “Conform” it in Cinema Tools to 23.98
drop the conformed file into Compressor and make the DVD files from that.
they will be NTSC as Compressor will read the frame rate
the film will play slower, of course.
check the conformed QT first to see if it;s acceptable for you.
if they do accept BluRay, then just go with that.
there is no such thing as an NTSC BLuRay, PAL and NTSC are Standard Def formats
but BluRay can be any frame rate, just about.
unless your primary market is television, i would not shot at 25fps.
nick