Well, HERE’s a new one… I decided to try one more test:
1. I rendered the file I created in Vegas (background generator, text, etc) as an uncompressed AVI.
2. I loaded the file into another program (TMPGEnc 4)
3. Rendered as an MPEG-2 file (I believe all of the setting were about the same as Vegas)
4. MPEG-2 file had minimal artifacting. Despite the fluxuating lights in the video and the use of bright red, the compression artifacts were hardly visible unless you were blatantly looking for them. So, that leaves me wondering if the Main Concept MPEG-2 plugin is just a bit “faulty”?