Cropping a video to match another, and adjusting the color balance to match, seems simple enough, compared to asking a computer to do it without a reference. In other words, "make X look like Y" as compared to "make X look good".

Of course, the quality won't be as good as something done by a professional, but the question is that since we don't have a HD DS9, whether the version produced by an automated system is noticeably better than what we have.