I use this to put old VHS videos to DVD that are pretty much unavailable any other way than by old tapes. Tried the tools available in FinalCut to clean up and de-interlace, and was very dissatisfied with the results and time they took to achieve. Enter JES Deinterlacer: it is truly amazing! Speedily creates superior progressive output to FC's Compressor, and coupled with JES Video Cleaner, the results are literally astounding. Factor in the cost of these apps, and I can't say enough good about them.

Other than having to trash the prefs files more than occasionally, the only real drawback to using this software successfully is that you must first READ through the included help files, and then be willing to EXPERIMENT to get the results you want. If you're unwilling, or unable to grasp these concepts, consider that you should probably be doing something else instead, and not messing with anything like Final Cut Studio (or any other serious video apps) to begin with.