The QuickTime plugin composes standalone subtitled QuickTime movies without rendering. High quality video without generation loss can be achieved instantly. Just set up your layout and deploy.
You may add mutiple named subtitle tracks or an overlay like on DVD.
These files are cross-platform and unicode enabled.
Since QuickTime 7.6.2 unicode text is easily supported by QuickTime again. So the above applies only to older versions of QuickTime 7.