30 sec. camera flight needs 14h with 4gb?

[techdoku]

Hi folks,

I did  a very very simple animation.
it is just a single 360 camera flight around my object.
the animation lasts 30 seconds.
the rendertime was exactly 14 hours with the highest resolution (hd with 720p) filetype = avi and the final size was 4GB.

is this normal?
I have to render about 30 objects.....and no time....

i have also problems with the final avi - it leaks when be played (with media player, vlc player, etc...) - I have a HD gui and hd monitor.

the plan is to create a final movie with all animations (one 360