rowvid-version-0.watchframebyframe.com
Watch YouTube frame by frame and in slow motion.
RowVid was originally created by Calum Eadie, Andrew Ratomski and Jack Lawrence Jones at an Entrepreneur First Hackathon, to help rowers analyse training and race videos.
Since then it has evolved into general purpose player for frame by frame and slow motion playback of any YouTube video.
https://developers.google.com/youtube/js_api_reference
https://developers.google.com/youtube/youtube_player_demo
https://code.google.com/apis/ajax/playground/#change_the_playing_video