Re: FLASH: T Tt T i MMi i n GG

[Dave Hollinden]

>When I play my flash movie(swf) on my desktop (400mhz) as compared with my

>laptop (233mhz), the movies play at different speeds.  The movie plays

>faster on the desktop and therefore the audio plays out and finishes just as

>I expected on the desktop.  Yet the laptop movie plays slower and the audio

>finishes before the movie does.

>

>Why?

>


Hi Daniel,


The frame rate of a Flash movie can slow down when the animation gets more

complex and takes longer to draw without distorting the content, but a

sound file can't slow down without distorting the sound.  So Flash gives

you two choices.  


1) You can insert your sound file as an EVENT sound.  The beginning of the

sound will be in sync with the animation because it will start in the key

frame that you insert it in.  But the sound will play at proper speed

independent of changes in the animation frame rate, so the sound and

animation can get out of sync on slow computers.  Or, ...


2) You can insert your sound file as a STREAMING sound.  In this case the

sound and animation are forced to stay in sync by forcing the animation to

play at a constant frame rate and thus keep up with the sound file.  The

animation will skip frames if it has to in order to play at the same speed

as the sound file.  They'll  stay in sync on slower computers or over a

congested Web connection, but complex animation may suffer as there may not

be enough time for a slow computer to draw all of the frames.


S, if you want things to stay in sync with particular notes in the music,

then you'll probably have to use streaming sounds.  But you'll have to test

the animation on slower computers or connection speeds to make sure that

the animation still plays the way you want it to.

Dave Hollinden

Sound Designer

Jet City Studios

Seattle, WA

dhollindenjetcitystudios [dot] com (mailto:dhollindenjetcitystudios [dot] com)

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