Yuvid Responsive options are applicable to both YouTube and HTML5 videos.


On large screens, YouTube video size is controlled by width and height attributes in the YouTube embed iframe:


<iframe allowfullscreen="allowfullscreen" height="360"
src="https://www.youtube.com/embed/myvideoid?rel=0&showinfo=0&version=3&enablejsapi=1&playsinline=1&modestbranding=1&controls=1&fs=1"
width="640"></iframe>


Screen size Settings are applicable to HTML5 and Flash videos, but not Youtube.