Re: FLASH: streaming flash

[Dave Hollinden]

At 07:55 PM 9/22/98 +0100, you wrote:

>does anyone know if flash streams audio? sort of like a quicktime movie that

>can start playing before it completely loads.


Hi Sean,


Yes, Flash can stream audio.  If you set the Sync attribute in the Sound

tab of the Frame Properties window to "streaming", the audio data will

stream as part of the SWF file.  


This is also the best way to maintain accurate sync between the audio and

the visual elements because Flash streams them together.  If you set the

Sync attribute to Event, Flash will merely play the audio on it's own

timeline while the visual elements are streaming on their own timeline.  If

the web is congested or your computer can't draw the graphics fast enough,

the visuals will run at a slower frame rate so as to still display every

frame.  However, the audio keeps on playing at it's normal rate, thus

letting the audio and visuals get out of sync with each other.  When the

audio is set to Streaming, the audio and visual data for EACH FRAME stream

together.  Since you can't slow down the rate that audio is played back

without making it sound funny, Flash forces the animation to keep pace with

the audio timeline, even if it has to skip frames of animation to stay in

sync.


This is my current understanding.  

If it's wrong, will someone please correct me?


Dave Hollinden

Sound Designer

Jet City Studios

2019 3rd Ave., Suite 100

Seattle, WA 98121

206-448-5854

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

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