ffmpeg command

ok, Im streaming rawdata directly to ffmpeg using Adone AIR 2.0. And stream duration for this test is about 6 seconds!
raw data here is a byte array generated from a rectangular region of pixel data. Its written an unsigned integer (a 32bit unmultiplied pixel value) for each pixel into the byte array. Thats why im using -pix_fmt argb.
command:

ffmpeg -an -threads 0 -f rawvideo -pix_fmt argb -s 640x320 -framerate 30 -i - -q 10 -r 30 -y -f flv demo2013.flv