It's definitely there. I picked a video at random, and: <video class="video-stream" x-webkit-airplay="allow" data-youtube-id="iF83wwij828" poster="http://i2.ytimg.com/vi/iF83wwij828/hqdefault.jpg" src="http://v14.lscache3.c.youtube.com/videoplayback?sparams=id%2Cexpire%2Cip%2Cipbits%2Citag%2Cratebypass%2Coc%3AU0hQRVVRV19FSkNOMF9NS0FD&itag=43&ip=0.0.0.0&signature=60D26B708E92E1636CA3B34
![How to get HTML5 video URL from youtube 's HTML5 version?](https://cdn-ak-scissors.b.st-hatena.com/image/square/98d6f053a97a87156775f60757c60865d0f2c47d/height=288;version=1;width=512/https%3A%2F%2Fcdn.sstatic.net%2FSites%2Fstackoverflow%2FImg%2Fapple-touch-icon%402.png%3Fv%3D73d79a89bded)