javascriptで行うことができます。
<div class="video-container">
<div id="player"> </div> <!--<iframe width="960" height="720" src="//www.youtube.com/embed/5YptIh_avrM?rel=0&autoplay=1" frameborder="0" allowfullscreen></iframe>-->
</div>
<script>
// 2. This code loads the IFrame Player API code asynchronously.
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
// 3. This function creates an <iframe> (and YouTube player)
// after the API code downloads.
var player;
function onYouTubeIframeAPIReady() {
player = new YT.Player('player', {
height: '720',
width: '960',
videoId: 'YOUR_ID_HERE',
events: {
'onReady': onPlayerReady,
'onStateChange': onPlayerStateChange
}
});
}
// 4. The API will call this function when the video player is ready.
function onPlayerReady(event) {
event.target.playVideo();
event.target.setVolume(20);
}
// 5. The API calls this function when the player's state changes.
// The function indicates that when playing a video (state=1),
// the player should play for six seconds and then stop.
var done = false;
function onPlayerStateChange(event) {
}
function stopVideo() {
player.stopVideo();
}
</script>
ない重複:ここ
は一例です。あなたがiOS上でyoutube.comのホームページにアクセスすると、自動再生が動作するように見える理由をOPから聞いています(私にとってもそうです)。 –