Reduce YouTube video load time and make your YouTube videos responsive at the same time!
The standard embed code for YouTube videos is making your load time slow and this affects your page speed score. The standard embed code is also not mobile responsive. Users who are on mobile experience a video player that doesn't resize itself accordingly.
For Google+, Google's engineers came up with a workaround to reduce load time of Youtube videos and what we're doing with Art Fast Youtube is using a similar apporach. What we do to speed up the page load and make the videos responsive is to load a thumbnail from Youtube's API and we place the thumbnail image in the page with a play button placed over the video. When the video is clicked it loads and plays the Youtube video. The key part here is that we're not loading Youtube video resources unless a user wants to watch the video.