ok – so the problem is that the video you are embedding is wider than the page. Which means the video is being constrained to the page width – however the height you set isn’t changing and so the borders are appearing.
The width of the page is 946 – so if you change the embed sizes then it should work better.
Just done a quick test and this seems to work:
[vimeo 81341346 w=946&h=532]