Pretty much the video sums it up. The blur effect is applying to my entire video, not the mask. Using Vegas 15
I am not sure how you have it setup, even the video wasn't real clear, but easy fix is to delete the parts of the blurred track that you don't need so the lower video track is exposed completely.
Go to the first keyframe closest to 26 seconds. Is there a mask at that keyframe? If there isn't a mask, then that's why all the video frames before 26 secs. (approx) are blurred. I don't know if that is how it should work or not. You would think that when you reach a keyframe that has a mask, that the mask will be there at least until the next keyframe. Zoom in on those keyframes so you can check for "hidden" keyframes that are only a few frames apart. Maybe you accidentally Reset the mask on one of them.
Zoom in on those keyframes so you can check for "hidden" keyframes that are only a few frames apart. Maybe you accidentally Reset the mask on one of them.
@Robert Johnston:- Yes.