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I am trying to fade in youtube iframe embed, but it only works in IE9, all other newest browsers (Safari, Opera, Chrome, Firefiox) it doesnt. Iframe is shown immediatelly regarldess of setting opacity to 0.
I am on Windows.
What I am dong wrong?
ps: this works well with Vimeo youtube iframe embed.
JsFiddle:
http://jsfiddle.net/jgtSS/26/
438
For security reasons, an inline frame becomes fully visible when the alpha channel level (opacity / background) of the iframe/closest layer is reduced. So, even when the opacity is set to 0.99999, the frame shows up.
I've created a solution for this issue: Create two layers with the same size, and add them right after the iFrame's parent.
white.Then, animate the second DIV, to opacity 0. The background at the first image becomes more visible. At the end of the animation, hide the first div using a callback function:
To allow the user to activate the video during the animation, bind a click event handler to the DIV, which immediately hides the layers, and call the playVideo method of the inline video.
To invoke the playVideo method, you need a reference to the embedded video. Since you haven't created the video using the YouTube video API, you cannot use a global variable to access the video. A while back, I have created a function to invoke methods on an embedded video.
Read: YouTube iframe API: how do I control a iframe player that's already in the HTML?
I've created a live example at fiddle: http://jsfiddle.net/jgtSS/34/. The full code is also shown below.
<html><head>
<style>
#holder, #ID-of-first-div, #ID-of-second-div{
position:absolute;
width:320px;
height:240px;
top:0px;
left:0px;
}
#ID-of-first-div, #ID-of-second-div {
background: #FFF;
}
#btn1{
position:absolute;
background:#09C;
width:40px;
height:40px;
top:250px;
left:0px;
}
</style>
<script type="text/javascript">
$(window).load(function() {
$('#btn1').click(function(){
var vid_id = $('#player').get(0).src.match(/embed\/([^?]+)/)[1];
var vid_bg = 'http://i2.ytimg.com/vi/'+vid_id+'/hqdefault.jpg';
$('<img>').attr("src", vid_bg).css({width:'100%',height:'100%',border:'none'}).appendTo('#ID-of-first-div');
$('#ID-of-second-div').animate({opacity: 0 }, 3000, function(){
$('#ID-of-first-div').hide();
});
var both = $('#ID-of-first-div, #ID-of-second-div');
both.click(function(){
both.hide();
callPlayer('player', 'playVideo');
});
});
});
/*
* @author Rob W (https://stackoverflow.com/questions/7443578/youtube-iframe-api-how-do-i-control-a-iframe-player-thats-already-in-the-html/7513356#7513356)
* @description Executes function on a framed YouTube video (see previous link)
* For a full list of possible functions, see:
* http://code.google.com/apis/youtube/js_api_reference.html
* @param String frame_id The id of the div containing the frame
* @param String func Desired function to call, eg. "playVideo"
* @param Array args (optional) List of arguments to pass to function func*/
function callPlayer(frame_id, func, args){
if(!document.getElementById(frame_id)) return;
args = args || [];
/*Searches the document for the IFRAME with id=frame_id*/
var all_iframes = document.getElementsByTagName("iframe");
for(var i=0, len=all_iframes.length; i<len; i++){
if(all_iframes[i].id == frame_id || all_iframes[i].parentNode.id == frame_id){
/*The index of the IFRAME element equals the index of the iframe in
the frames object (<frame> . */
window.frames[i].postMessage(JSON.stringify({
"event": "command",
"func": func,
"args": args,
"id": 1/*Can be omitted.*/
}), "*");
}
}
}
</script>
</head><body>
<div id="holder">
<iframe id="player" type="text/html" width="320" height="240"
src="http://www.youtube.com/embed/u1zgFlCw8Aw?wmode=transparent?enablejsapi=1"
frameborder="0"></iframe>
</div>
<div id="ID-of-first-div"></div>
<div id="ID-of-second-div"></div>
<div id="btn1"></div>
</body></html>
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