I dont know it is right or not right that I use the word 'halation', it is from the footage, because the lens hood is not big enought, we got some light, just 3 or 5 frames.

can I remove it by avid mc or any software? 

thanks.

You might be able to use the Scratch Removal effect (in the Image section) to replace part of the frame with a clean frame from earlier or later in the shot.

Or the Paint effect can be useful.

Depends on how bad it is and how much of the frame is affected.

Hi there,

If this is what I experience, here's what I do—I 'Resize' the image, making it a little bit larger... just enough so that you can't see the problem in the corners.  You can use 'Resize' in Effects, or PIP, to do this.

Regards, Malcolm