QT in Shockwave - what's the best compression?

["kar13" <webforumsuser@xxxxxxxxxxxxxx>]

I'm creating a project in Director that contains QT video. It will be delivered 
in Shockwave format via the web. I've been told to use the specs below, but I'm 
not happy with the playback quality. It gets a bit chunky and pixelated. It's 
not even fast moving content, either...

 Video: H.264, 320x240 millions, 200Kbits/sec
 Audio: AAC 4:1, mono, 11.025kHz

 I see video all over the web (including Adobe's new home page with Flash 
video) and the quality looks great! How do I get that?? Is it possible with QT? 
Are there any other suggestion for QT compression specs? 

 Thanks for your help.
 -Karen