On some of my 2:35 1 DVDs, there is a thin black line horizontally across the screen, top and bottom of the image right near the edge of the image. It is not the display or the DVD player. It is very annoying, especially on the big screen! It's like an edge enhancement on the upper and lower image edge. Very evident on the Mummy  and Austin Powers the Spy Who Shagged Me. What is this artifact?