increase video speed html5

/* play video twice as fast */
document.querySelector('video').defaultPlaybackRate = 2.0;
document.querySelector('video').play();

/* now play three times as fast just for the heck of it */
document.querySelector('video').playbackRate = 3.0;

document.querySelector('video').playbackRate = 1.25;

javascript:document.getElementsByClassName("video-stream html5-main-video")[0].playbackRate = 0.1;