Pages of discussion without answering the basic question --
what is the bitrate for HD rentals?
If closer to 5 mbps than 3 mbps, many DSL users will
be frustrated by long progressive download times, unless
they are close enough to the central office to receive 6 mbps.
E.g. if you only have 3 mbps, it will take an hour to start
watching a two-hour film encoded at 4.5 mbps...
Yes, we know this is somewhat content-dependent, but
720x480 SD anamorphic stuff is already known to be encoded
at 1.5 mbps with little variation. So, let's assume 2.35:1
aspect ratio for cinema -- simpler yet, what is the filesize
for Apple/Disney's Pirates of the Caribbean?