How I calculate the flv file size whe I recording from camera and microphone?

Hi all:
I'm recording video from my webcam and my microphone.
I would like to know how I can to determinate via some formula, approximately, the result file size due to camera and microphone configuration.
I show you my actual configuration:
     // setup cam
    cam = Camera.get();
    // setting dimensions and framerate
    cam.setMode(320, 240, 30);
    // set to minimum of 70% quality
    cam.setQuality(0,70);
    // setup mic
    mic = Microphone.get();
    mic.setRate(22);
Only ohert question:
What enconders are using to encoder video and audio by default?
Regards, Roberto.

I'd say 9.4 mb is correct. Email attachments always put on a lot of weight, so 12 mb as an attachment is probably right too.
Why don't you use a free service like Filemail? It's very easy to use, and you dont't have to sign up to use it.

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