I’m having a similar problem, very temperamental though. I have a video that I have been working on for the past week, up until just today (day 6 working on this) I didn’t have this problem in any export.
However today, on a Title screen (no video, just Title on stage). I read that the Fast Color Correction could help with this. It did, except that the artifact occurred just before the time it did previously (i.e., after the color correction).
Yet, I still have this little white “artifact” appear for just a half of a second. Like a squiggle at the bottom of the title. BUT this “squiggle” is NOT on the timeline in Adobe Premiere CS6.
Frustrating!
Everything is RGB from what I can tell. Video is 720×480. Title is written using the Adobe Caslon font (blue fill with a white around it). Exporting to NTSC DV using H.264.
Any ideas for resolving this?
Thanks!