Using movie format to load bitmaps?

I am making a game which has a serious amount of animated
bitmaps. So far I have loaded all frames as individual images, but
its clear this approach will result in a monster download as
individual PNG files do not compress well for animations at all.
So, I am considering loading FLV files compressed using H264,
with an alpha channel (8-bit alpha channels are crucial in my
game). This will take care of the size problem.
However, I cannot play FLV files directly, as the game
features hundreds of animated sprites at the same time, and
decoding the animation from H264 for each one in real time is just
too slow.
My idea is to load the movie, then extract individual frames
from it as BitmapData objects, with the alpha channel intact.
But, so far, I have not found a way to extract all frames
from a FLV movie into BitmapData objects.
Can anyone help?

Hi NED! thank you for all your help so far!!!
I was wondering about the flexability of loading movies into a movie clip.
Currently, thanks to your help i am well able to load one movie into a movie "loader" clip, but thought maybe there is a way to load additional movie clips into that same "loader" clip, as i am starting to accumulate several different graphics that i need to have be inside movie clips so that i can make them change colors on the same frame when needed.
i shot from the hip and tried this code, but didnt have any luck:
mc_LCD_loader.attachMovie("hilight", "g", 1), ("header", "X", 1);
mc_LCD_loader.g._x = 0;
mc_LCD_loader.g._y = 1000;
mc_LCD_loader."X"._x = 0;
mc_LCD_loader."X"._y = 1000;
- - - where "hilight" is the identifier name of a given movie clip and "header" is the identifier of a given movie clip in the same library...
"hilight" loads fine
i dont fully understand what "g" means to the identifier...
i am just unsure of how or if it is even possible to load another MC into the same MC Loader...
is it possible? if so could you give me a hint?
thank you!
- patrick

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