Cleaning up artifacts around video frame edges

Question

Long story short (and one I don't have all the technical details about), when recording DVCPROHD 1080p/24pA to P2 cards using a Panasonic HVX200, a strange flashing line artifact appears every four frames at the very top of the frame. Here's a quick GIF animation of two frames, one with the line, the other without (click to view in a pop-up):
It's really distracting, and while I can crop this out for either web or DVD delivery, it's not really possible for BR. What I'm trying to do is figure out a good way to clean up or remove this artifact.
I found Pixelan Clean Crop, and downloaded the demo; it works well. It basically blends a few lines together to effectively mask the flashing line. I'll buy this if necessary, but would prefer to do this with already-available plugins or techniques, if possible.
I've also successfully masked the line using the CC Simple Wire Removal effect (copied CycoreFX from AE), and by using the frame offset option along with Hold keyframes, I can mask this. However, it kills real time playback almost immediately.
Does anyone have any efficient or creative ways of eliminating this type of artifact using what's already available in Premiere? Or should I just pony up the cash for the Pixelan plugin and call it good?

Answer 1

Does the "effect" only cover the pixels of the dark bar or does it actually extend further down the image as seen in the gif example?
I assume by "effect" you're referring to the artifact? Truthfully, the sample above is a bit distorted; I blew up the portion of the frame where the artifact appears, so it looks much larger than it is in reality. Here's an unprocessed frame right from a clip:
In the top left corner, running about a third of the way to the right, you'll see a pink line. There is also another pink line on the scan line above that that runs all the way across the frame. This flickers continuously, every fourth frame, which coincides with the 2:3:3:2 pulldown rate. If it was consistent, it wouldn't be that big of an issue (though still not right), but the flickering is so evident that eventually that's all you see!
maybe you could consider Instant HD to resize the clips marginally.  I think it would do a great job on it.
Thanks for the recommendation; fortunately, the Pixelan CleanCrop effect fixed this up easily, at a bargain basement price. Rendered reasonably quickly too.
BTW - I have never seen this issue in my PAL HVXs (202)
Of course not--you don't have to suffer the ignomies of NTSC video! Since you've got those even integer frame rates that not only divide into each other nicely, but also don't require any of this pulldown nonsense, you're good to go. Always gotta be somethin'...