very slow tweening between scenes....

i have a massive .fla file that has heaps of photos i have made symbols that tween by fading from one to the next. it is 13 MB! very large, i know, but the guy i contact to wanted all of this info, so i did my best....
anyway, at the end of one scene i do a 15 frame fade tween of about 5 symbols (including the background gradient) to another 5, for example, russia with a red background and russian flag tweens to italy with a green background and italian flag....
now there is no problem with the entire movie (swf is 1.5MB) playing on my pc at normal size, but when it is on the large plasma for the presentation and even at full screen on my pc the tweening between scenes is excruciatingly slow and looks crap!
could someone please give me a few pointers? i am fairly new to flash (well, i have done a training cd which was cool!) and this is my first real undertaking.
thanks!
jt6572
jt6572Asked:
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rascalpantsCommented:
you need to optimize your SWF...

take a look at this link, and it will give you some good pointers:

http://livedocs.macromedia.com/flash/mx2004/main/01_doc49.htm

and here is another:

http://www.macromedia.com/support/flash/publishexport/stream_optimize/stream_optimize06.html


but I think your main problem has to do with trying to tween bitmaps...  this is typically a real CPU hog, and even on the fastest computers will take a long time to process...

and make sure you are staying away from tweening movieclips over bitmap images, because the CPU has to redraw that "hug" bitmap each frame because the movieclip is movie over it...


follow the above techniques, and you will get some better results...


SWF optimization starts before you even open the Flash Application...  make sure you don't use techniques that will slow down the CPU... and never use these techniques all at once!


rp
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cruiserpartsCommented:
It might be a long shot, but this might help.  I regularly tween (you need to tint tween) large-ish bitmaps in MX.  Have you tried using a different browser to play the movie.  I have one movie that I simply can not view using the Apple Safari Browser that plays fine with IE 5.0 on the mac, and every other browser.  It just doesn't tween that particular movie well.  It drives me nuts, cause I love Safari.  Some sort of bug I guess.  What happens if you use a different browser to view the movie that's giving you a problem?  
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jt6572Author Commented:
thanks very much rascalpants,
havent seen the result yet, but i took out the gradient backgrounds and it looks much better anyway!
jt6572
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rascalpantsCommented:
one other tip that you might use is when ever you use Alpha tweens, you should never go from 0% to 100%...

instead you should go from 1% to 99%

I can't remember why, but this seems to help the CPU out a little bit...

rp
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jt6572Author Commented:
excellent, thanks again rascalpants! will do...

jt6572
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