Topaz Labs has just released a set of After Effects/Premiere Pro/Digital Fusion filters for improving video quality.
Topaz Enhance implements advanced algorithms to make your videos as clean, clear, and crisp as possible. It can eliminate luma and color noise without loss of detail, remove 4:1:1 video color bleeding by recovering color edges, sharpen videos without overshooting or noise amplification, and eradicate all compression block effects and artifacts without blurring.
More information can be found at http://www.topazlabs.com .
Sounds impressive. And it sounds impossible, it seems to be claiming to discover information that's absent from the signal.
You can download the software and try it out (30-day). We really appreciate any feedback and comments. You can also find a tutorial on our site. topazlabs.com
Albert