Making a simple white solid title
I am sure some will laugh at the above question, but its driving me nuts. I am trying to create a simple white block title to overlay on some video. I have gone through every permutation and setting I can find and I simply can't make a title/ caption that is solid white, every type face comes out see through, i.e. non opaque. I cannot make any of them solid. I have slid every slider in every setting and every font with no success. I am sure the answer is blindingly obvious, but I just can't seem to find it.
Any help appreciated.
MacBook Pro (Retina, 15-inch, Mid 2014), OS X Mavericks (10.9.4)