Embedded video is not sized.

[hermannw]

An embedded video (YouTube) in a post is always shown at 100% width. In the editor the video is sized correctly. When the post loads the video seems to be shown at the correct size for a split second but then it is resized to the width of the post.
Even worse: when the width of the video is smaller then the height, only a part from the left side of the video is shown at 100% and the whole post gets extremely long.
Any idea how to fix this?

Thanks for this theme! Apart from some minor things it's the best theme I found for my purposes!

[jimbobbennett]

I think this is by design - the theme uses FitVids which fits all videos to the screen width.