First, I am well aware that Roxio allows conversion to HD. The only thing is... It does not end up HD. It sure increases the file size tremendously, no doubt about that, but it doesn't actually seem to improve the quality of the video. If the original video is blurry, the new HD file is still blurry.
So my question is, while it is possible to convert ordinary video files into HD video files, is there anything I can do to actually improve the quality of the video in terms of viewing experience?
Apologies if this is an easy/noob question.