Tried to watch it (even though I do already have ARMA), but it doesn't seem to want to display online with a buffered feed, so I tried the old 'right click save target as', and it's a 288Mb file that would take almost 2 hours to download on my 9 meg broadband, so I guess that site has limited bandwidth for downloads. I'd like to see it, but not THAT much!
Did you take it with FRAPS? whenever I do that, I import the FRAPS footage into a video editing program and save it in some compressed format, and that tends to get rid of the choppiness that FRAPS can sometimes engender things with (and if anything will give you choppy FPS, it's that PMDG 747). That's how this one was done, and despite youtube's compression and 100 meg upload limit, this thing can still be viewed full screen at reasonably decent quality (you may already have seen this one BTW, I think the original file I uploaded to youtube was about 71 meg, which, at exactly 5 mins long, would work out at about 70 meg less than your 15 minute chopper attack):
Chock