Ever had trouble trying to export a Quicktime version of your animation through Flash? I've always had - there's always dropped frames or parts that just slow up and get choppy. Anyhow, tonight while trying to make nice .mov files so I can upload my animations online, I finally figured out an export method to make nice smooth animation quicktime files! Maybe some of you already know this, but I thought I'd share in case you don't:
To start, be in Flash CS4. (because I've never noticed this function before in CS3)
File > Export > Export Movie
A window will pop up asking where you wanna save it, so find your folder and stuff - and in the dropdown for "Format" make sure it says "Quicktime".
In the next window that pops up, click the "Quicktime Settings" button on the bottom left of the window. Then under "Video" click "Settings..."
Now here's the new part: under "Compression Type" there are two options at the bottom called "Uncompressed 10-bit 4:2:2" and "Uncompressed 8-bit 4:2:2" (In the past, everyone's always recommended going with "None" or "Animation" but it still doesn't quite do it right). Either 10 or 8 bit has worked fine, not sure what the difference is yet (maybe it has to do with color, so far only tried it on the grayscale pencil drawings).
Now hit "OK" (I tend to keep most of the other options at the default), and "OK". A little warning window about the Quicktime frame rate being set to match the Flash frame rate might pop up, just "OK" it.
Now you will be back in the "Quicktime Export Settings" window and you can click "Export" and voila! You will have a nice .mov file without any of those awful choppy skips.
Hope this helps!