I am creating a video with scrolling credits over a noise/moving backdrop. When I render the clip as an MPEG2 with "best" quality for video, the lettering is rough around the edges. In the preview window before rendering, it looks good (letters are real smooth) only when I select Preview (Auto) or Good (Auto). If I select Best (Auto) for the preview window quality, the same thing happens to the text. What is causing this and how can I get around this because I want to use "Best" quality for the final rendor. Should I rendor the credits to a new track and then rendor the whole thing to the final cut? Thanks in advance for any help!!