Hdmi tv monitor movie playing over zoomed

My mac was displaying fine to tv monitor. I would stream amazon and other. Suddenly, without changing anything, my movies are displaing on both mac and tv screen in super zoomed. I only see mouthes and nostrils, except when i move the mouse over the movie. When i viewed amazon clip it went in and out of mega zoom to normal display. Somehow my mac has saved these mirroring settings and i have tge same issue on other tvs. The mac background and other apps display normal. I have upgraded, fiddled and googled all setting options. No fix. Please help.