Multiple videos using the YouTube API within a Bootstrap 3.3.7 carousel slider

This is an example of how to use the YouTube API with multiple videos within a Bootstrap carousel.

I have added Play/Pause functionality to a custom button and added the ability for the videos to be paused when the carousel is transitioned.

A CodePen is attached below to see the example in action, and the code is listed in this post below.

See the Pen Bootstrap 3.3.7 carousel with YouTube videos using the YouTube API by Ryan Fitton (@ryanfitton) on CodePen.



 

Code Examples

HTML code

Ensure you already have these dependencies loaded:

However, just a note: The code should work in different viewports, but will probably need some tweaking to get the YouTube videos and Video button aligned correctly. I’ve also not fully browser tested this code, but I have tested it in these browsers:

  • Chrome 63
  • FireFox 57
  • Internet Explorer 11

To add more videos, increment the ‘0’ in id="vid-0" and add the YouTube video’s ID to the data-id"xxx" variable.

<section>

        <div class="container-fluid">
            
            <div class="row">
                <div class="col-sm-6 col-sm-offset-3 text-center">
                    <div id="video-carousel" class="carousel slide" data-ride="carousel">
                        <!-- Indicators -->
                        <ol class="carousel-indicators">
                            <li data-target="#video-carousel" data-slide-to="0" class="active"></li>
                            <li data-target="#video-carousel" data-slide-to="1"></li>
                            <li data-target="#video-carousel" data-slide-to="2"></li>
                        </ol>
                        
                        
                        <!-- Wrapper for slides -->
                        <div class="carousel-inner" role="listbox">
                            <div class="item active">
                                <!-- Button inside item so it slides with the carousel -->
                                <div class="play-button-wrapper">
                                    <button class="btn btn-primary btn-video" type="submit"><i class="fa fa-play"></i></button>
                                </div>
                                
                                <div class="inner-content">
                                    <!-- id: Increment this each time - data-id: YouTube video ID -->
                                    <div id="vid-0" data-id="e6xw-vh6Eu0" class="youtube-video"></div>
                                </div>
                            </div>

                            <div class="item">
                                <!-- Button inside item so it slides with the carousel -->
                                <div class="play-button-wrapper">
                                    <button class="btn btn-primary btn-video" type="submit"><i class="fa fa-play"></i></button>
                                </div>
                                
                                <div class="inner-content">
                                    <!-- id: Increment this each time - data-id: YouTube video ID -->
                                    <div id="vid-1" data-id="FNqGFF9hbnE" class="youtube-video"></div>
                                </div>
                            </div>

                            <div class="item">
                                <!-- Button inside item so it slides with the carousel -->
                                <div class="play-button-wrapper">
                                    <button class="btn btn-primary btn-video" type="submit"><i class="fa fa-play"></i></button>
                                </div>
                                
                                <div class="inner-content">
                                    <!-- id: Increment this each time - data-id: YouTube video ID -->
                                    <div id="vid-2" data-id="8FSHa77t2q0" class="youtube-video"></div>
                                </div>
                            </div>
                        </div>


                        <!-- Controls -->
                        <a class="left carousel-control" href="#video-carousel" role="button" data-slide="prev">
                            <i class="fa fa-chevron-left" aria-hidden="true"></i>
                            <span class="sr-only">Previous</span>
                        </a>

                        <a class="right carousel-control" href="#video-carousel" role="button" data-slide="next">
                            <i class="fa fa-chevron-right" aria-hidden="true"></i>
                            <span class="sr-only">Next</span>
                        </a>
                    </div>
                </div>
            </div>
            
        </div>

    </section>

 

CSS (Sass format)

You will need to compile this with your SASS compiler:

section {
    margin:25px 0;
}



/*--------------------------
    Carousel Styling
--------------------------*/
.carousel {
    
    .inner-content {
        min-height: 100px;
    }
    
    .carousel-indicators {
        bottom:0; //Align to bottom of parent div

        li {
            margin:0 2px;
            width: 18px;
            height: 18px;
            background: transparent;
            border-color: lighten(#000, 15%);
            border-width: 3px;

            &.active {
                background: lighten(#000, 15%);
            }
        }
    }
    
    .carousel-control {
        font-size: 52px;
        background:transparent;
        text-shadow:none;
        color: #000;
        opacity:1;
        
        //Hover, Focus and Active styles
        &:hover, &:focus, &:active {
            color:lighten(#000, 20%);
        }
    }


    //Video Carousel
        &#video-carousel {
            padding-bottom:90px; //Extra padding for '.carousel-indicators'


            .carousel-inner {
                border:2px solid #f3f3f3;
                background-color:#f3f3f3;//Prevents background image being shown when switching slides
                
                //Inner content - Wrapper for the '.youtube-video' div
                .inner-content {
                    min-height: 420px; //Change this for different viewports
                    
                    //The YouTube video - This styling may cause issues
                    .youtube-video {
                        position: absolute;
                        left:0;
                        top:0;
                    }
                }
                
                //Play button and button wrapper
                .play-button-wrapper {
                    cursor:pointer;
                    
                    //Wrapper overlays the entire video
                    z-index: 9999;
                    position: absolute;
                    width: 100%;
                    height: 100%;
                    
                    //This centers the play buton
                    display: flex;
                    align-items: center;
                    justify-content: center;
                }
            }

            //Control buttons - Left/Right
            .carousel-control {
                color:rgba(#000, 0.6);
                width: auto;
                line-height: 400px;//Height of the items

                &.left {
                    margin-left:-200px;
                }

                &.right {
                    margin-right:-200px;
                }
                
                //Hover, Focus and Active styles
                &:hover, &:focus, &:active {
                    color:rgba(#000, 0.90);
                }
            }
        }
}



/*--------------------------
    Button Styling
--------------------------*/
.btn {
    text-shadow:none;
    
    //Hover, Focus and Active styles
    &:hover, &:focus, &:active {
        border-color: transparent;
    }
    
    //Play button
    &.btn-video {
        padding: 20px;
        font-size: 40px;
        line-height: 0;
        border-radius: 0;
    }
}

 

JavaScript
/*
 * Carousel setup
 */
(function(){
    // setup your carousels as you normally would using JS
    // or via data attributes according to the documentation
    // https://getbootstrap.com/javascript/#carousel
    $('#video-carousel').carousel({ interval: false });                 //Disable auto-slide
}());



/*
 * Video carousel - Dynamically load in YouTube videos based on 'data-id'
 */
    //Load the YouTube Iframe API
    var tag = document.createElement('script');

    tag.src = "//www.youtube.com/iframe_api";
    var firstScriptTag = document.getElementsByTagName('script')[0];
    firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);


    //This will be the object name for interacting with the videos in the rest of this code
    var videoArray = new Array();



    //Function: onYouTubePlayerAPIReady - Run when API is ready
    function onYouTubePlayerAPIReady() {
        
        //Look for video 'data-id' in the '.youtube-video' div
        var videos = document.querySelectorAll('#video-carousel .youtube-video');
        
        
        //Loop through each div found
        for (var i = 0; i < videos.length; i++) {

            //Create an array to hold the video IDs from 'data-id'
            dataset = videos[i].dataset.id;
            
            //This will be the variable name for inserting videos into the HTML divs
            var divID = 'vid-' + i.toString();
            
            //Setup video object, configure how videos should be presented
            videoArray[i] = new YT.Player(divID, {
                height: '100%',
                width: '100%',
                playerVars: {
                    'autoplay': 0,
                    'controls': 0,
                    'modestbranding': 1,
                    'rel': 0,
                    'showinfo': 0,
                    'loop': 1,
                    'iv_load_policy': 3
                },
                videoId: dataset, //Uses current looped ID from array
                events: {
                    'onReady': onPlayerReady,
                    'onStateChange': onPlayerStateChange
                }
            });
            
        }
    }



    //Function: onPlayerReady - Run when video player is ready
    function onPlayerReady(event) {

        //When the Bootstrap Carousel moves
        $('#video-carousel').on('slide.bs.carousel', function () {

            //Find each Iframe within '#video-carousel'
            $(this).find('iframe').each(function(){
                
                //Pause all YouTube videos
                event.target.pauseVideo();
                
            });

            
            //Show custom video button
            $('.play-button-wrapper .btn-video').show();

        });


    }



    //Function: onPlayerStateChange - Run when a videos state has changed
    function onPlayerStateChange(event) {

        //Find all custom video buttons within '#video-carousel'
        $("#video-carousel").find('.play-button-wrapper .btn-video').each(function(){

            //If video has Ended
            if (event.data == YT.PlayerState.ENDED) {
                $(this).fadeIn("Slow");//Fade out
                $(this).find('i').attr("class", "fa fa-play");
            }

            //If video is Playing
            if (event.data == YT.PlayerState.PLAYING) {
                $(this).find('i').attr("class", "fa fa-pause");//Change icon
                $(this).fadeOut("Slow");//Fade out
            }

            //If video is Paused
            if (event.data == YT.PlayerState.PAUSED) {
                $(this).fadeIn("Slow");//Fade out
                $(this).find('i').attr("class", "fa fa-play");
            }

            //If video is Buffering
            if (event.data == YT.PlayerState.BUFFERING) {
                $(this).find('i').attr("class", "fa fa-circle-o-notch fa-spin fa-fw");
            }

        });
    }



    //Bind Click and Touchstart events to the custom video button
    $( ".play-button-wrapper" ).bind("click touchstart", function() {

        //Find the active carousel slide and target the Iframe within it
        $("#video-carousel").find('.active iframe').each(function(){
            
            //Find the integer from the div ID and split - Use objectID[1] to output the integer
            var objectID = $(this).attr('id').split('-');

            
            //If the active slide's video is Playing
            if (videoArray[ objectID[1] ].getPlayerState() == 1) {
                videoArray[ objectID[1] ].pauseVideo();     //Pause video on click

            //If the active slide's video is Paused
            } else if (videoArray[ objectID[1] ].getPlayerState() == 2) {
                videoArray[ objectID[1] ].playVideo();      //Play video on click

            //If the video is doing anything else
            } else {
                videoArray[ objectID[1] ].playVideo();      //Play video on click
            }

        });
    });
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