The Quicktime Player Plug-in actually has the same limitations as any other Safari plug-in/Flash Player itself. The hardware accelerated Quicktime in Safari use

The Quicktime Player Plug-in actually has the same limitations as any other Safari plug-in/Flash Player itself. The hardware accelerated Quicktime in Safari uses Core Animation for rendering into the browser. There's only on the other hand only DirectDraw in Windows XP / Firefox and they have made video acceleration happen there. Before 10.6 QT Player plugin used QuickDraw :) I don't think Adobe wants to use Core Video any how. Though.