Hi (The question is at the bottom ) I have a list of links :
li><a href="#">003 - What is rogramming and C#</a></li>
<li><a href="#">004 - unity interface</a></li>
<li><a href="#">005 - creating primitives</a></li>
<li><a href="#">006 - adding components</a></li>
And an iframe that play default one:
       <div class="embed-responsive embed-responsive-16by9" >
        <iframe class="embed-responsive-item"src="https://www.youtube.com/embed/4vdvlATlxLo" frameborder="0" allowfullscreen> </iframe>
        </div>
notice that I have changed the link so it will work -".com/embed/4vdvlATlxLo" Another thig i did is put stuff in the css someone from this forums did so it will work (otherwise it will not show):
.vid {
position: relative;
padding-bottom: 56.25%;
padding-top: 30px; height: 0; overflow: hidden;
}
.vid iframe,
.vid object,
.vid embed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}
The question is:
1 ) How can I have it so when someone press a link from the list it will switch the embeded video
2 ) how can I still keep the video private only on youtube
thanks !
