Camera slowing down to 4 FPS

Question

Hello everyone,
I have a problem with the camera slowing down in my project.
I thought it could be because of the complexity and memory
consumtion of this work, so I created a completely new movie, typed
such code:
quote:
var camera:Camera = Camera.getCamera();
var video = new Video(camera.width, camera.height);
video.attachCamera(camera);
addChild(video);
function onEnterFrame(event:Event):void
trace(camera.currentFPS);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
Despite there was nothing else done than just displaying the
captured video, the camera fps was still slowing donw (however it
was much lengthened in time than in the complex project), but
ultimately I also finished with 4fps. So I came up with an idea to
check if there is a connection between the memory usage and the
camera fps. So I changed the code a little bit and got:
quote:
var camera:Camera = Camera.getCamera();
var video = new Video(camera.width, camera.height);
video.attachCamera(camera);
addChild(video);
function onEnterFrame(event:Event):void
trace(camera.currentFPS + " / " + System.totalMemory);
addEventListener(Event.ENTER_FRAME, onEnterFrame);
And... this time the camera's fps stayed 25fps all the time.
To be honest - I really don't know why :| I mean, I'm happy the fps
stayed stabily at the level, but I don't know what to do in the
mentioned, complex, project to make the fps faster. I can't just
add the trace line ;)
For any questions here are some details about my project:
PC: Core 2 Extreme Quadro 2,66 GHz, 2.0Gb RAM, EVGA GeForce
8800 Ultra
Flash used: CS4
Tested on cameras: Canon MV 450i Digital Camera and an
ordinary USB webcam (both the same effect)
Thanks in advance for any help.

Answer 1

I'm pretty sure my iSight webcam supports 30 fps as I can record very smooth videos using youTube's webcam page, but even when my camera records at higher rate for example when there is more light in the room and fps goes up to 25 still netStream.currentFPS remains below 15, so the recorded video still has lots of dropped frames. I can't figure out why netStream.currentFPS never goes higher than 15. Perhaps I should decreae the number of keyframes in the video to reduce byte load...