Wierd looking 3d/4d

I had my 3d/4d ultrasound the other day at 28 weeks . Everything looked good while we were there . Later on I was looking at the video and at some points it looks like the baby has 6 fingers but then at others just the 5 . I know at one point the tech said the baby had both her hands together . I don't know if that was at the point I see possible 6 fingers . It's strange bc as the video moves along I only see the 5 the rest of the time . Anyone experience wierd looking things in their 3d/4d ultrasounds ?