how to loop two videos using youtube iframe code
问题 I use the following code in my web page to successfully autoplay and loop one video. Now, I'd like to add another video, essentially looping two videos. So, after one video is finished playing, the second video will start to play, and then the first video, and so on, and so froth. How should the code be modified to do that? <iframe width="560" height="315" src= "https://www.youtube.com/embed/51xS4yXbryc? rel=0&version=3&playlist=51xS4yXbryc&loop=1 &autoplay=1" frameborder="0" allowfullscreen=