What am I missing? Roto brush tool does an awesome job with the initial mask, but a few frames down the line a patch above the head appears. I brush it out, but it reappears on the next frame. The rest of the mask is perfect and holds all the way through, but that one spot will not go away. It seems I have to paint in every frame, which isn't too bad, but doesn't seem right. I tried different brush sizes, refine mat, smoothing, and different Edge Detection settings but no help. Clip is 10 seconds long H264 in CS6 Windows
I can eliiminate most of that area, but sometimes nothing happens when I paint a stroke. I am holding the Alt key