Chromium shows a grey line at the under the fullscreen video - Raspberry Pi Forums

with raspbian 8, raspberry pi 3 model b, chromium 51 shows grey line @ bottom of fullscreen video (both etensions , without extensions). on same raspberry , raspbian withfirefox 45.5 video perfect, teasing(screen tearing) image slides mroe teasing too.
same video doesn't happen android 5.1.1 on zidoo x5 , windows 10 64 bit , chrome 55 64 bit, fullscreen instead on same hdmi tv 1920x1080 pixel.
config.txt customization simple now:
framebuffer_width=1920
framebuffer_height=1080
here example of see, both fullscreen , not.


using midori or uzbl browser video showed regularly, no grey lines on buttom.
here th live video tests:
http://185.24.234.250/godina-videos/movie.mp4
should change browser because chromium buggy or maybe should change video format?

raspberrypi