Application frameRate???

[Sergei_T]

Can anybody explain to me what for is frameRate property. It seems that nothing
changes when I change framerate of my flex application to 120. Does it mean
that if I change it to 100 the flex application will run smoother and quicker?

[peterent]

Flex runs in the Flash player which is based on a movie metaphor. The frame
rate does indeed dictate how fast things run, but you should choose it
carefully.

A faster framerate eats up more CPU since the Flash Player tries to do more
things per second. The Flex default framerate is 24 (Flash 8 I believe sets the
framerate at 12 fps) frames-per-second. Which is what a film normally runs at.
This is pretty optimal on today's computers. Plus, Flex doesn't have a lot of
animations like you would see in a Flash movie from an advertising agency or
graphic-intensive websites.

Since Flex doesn't have a lot of animation elements, changing the framerate
won't do you much good, except to change your CPU usage. If you use Effects,
they won't move faster or slower either, because they are time-based, not
frame-based.

The framerate is really there for when you embed a Flash SWF. For instance,
suppose your company had an animation in its banner. The designer of that
animation created it for 15 fps. If you loaded it into Flex, the Flex framerate
would supersede the loaded SWF (the first SWF to load into the Flash player
dictates the framerate). The framerate option on the Application tag would
allow you to set the rate to 15 to match the Flash movie.

HTH