We Keep Coding

Use javascript variable for video source in HTML [duplicate]

I'm trying to build a video player that works everywhere. so far I'd be going with:
<video>
<source src="video.mp4"></source>
<source src="video.ogv"></source>
<object data="flowplayer.swf" type="application/x-shockwave-flash">
<param name="movie" value="flowplayer.swf" />
<param name="flashvars" value='config={"clip":"video.mp4"}' />
</object>
</video>
(as seen on several sites, for example video for everybody)
so far, so good.
But now I also want some kind of playlist/menu along with the video player, from which I can select other videos. Those should be opened within my player right away. So I will have to "dynamically change the source of the video" (as seen on dev.opera.com/articles/everything-you-need-to-know-html5-video-audio/ - section "Let's look at another movie") with Javascript. Let's forget about the Flash player (and thus IE) part for the time being, I will try to deal with that later.
So my JS to change the <source> tags should be something like:
<script>
function loadAnotherVideo() {
var video = document.getElementsByTagName('video')[0];
var sources = video.getElementsByTagName('source');
sources[0].src = 'video2.mp4';
sources[1].src = 'video2.ogv';
video.load();
}
</script>
The problem is, this doesn't work in all browsers. Namely, in Firefox there is a nice page where you can observe the problem I'm having: http://www.w3.org/2010/05/video/mediaevents.html
As soon as I trigger the load() method (in Firefox, mind you), the video player dies.
Now I have found out that when I don't use multiple <source> tags, but instead just one src attribute within the <video> tag, the whole thing does work in Firefox.
So my plan is to just use that src attribute and determine the appropriate file using the canPlayType() function.
Am I doing it wrong somehow or complicating things?

I hated all these answers because they were too short or relied on other frameworks.
Here is "one" vanilla JS way of doing this, working in Chrome, please test in other browsers:
var video = document.getElementById('video');
var source = document.createElement('source');
source.setAttribute('src', 'http://techslides.com/demos/sample-videos/small.mp4');
source.setAttribute('type', 'video/mp4');
video.appendChild(source);
video.play();
console.log({
src: source.getAttribute('src'),
type: source.getAttribute('type'),
});
setTimeout(function() {
video.pause();
source.setAttribute('src', 'http://techslides.com/demos/sample-videos/small.webm');
source.setAttribute('type', 'video/webm');
video.load();
video.play();
console.log({
src: source.getAttribute('src'),
type: source.getAttribute('type'),
});
}, 3000);
<video id="video" width="320" height="240"></video>
External Link

Modernizr worked like a charm for me.
What I did is that I didn't use <source>. Somehow this screwed things up, since the video only worked the first time load() was called. Instead I used the source attribute inside the video tag -> <video src="blabla.webm" /> and used Modernizr to determine what format the browser supported.
<script>
var v = new Array();
v[0] = [
"videos/video1.webmvp8.webm",
"videos/video1.theora.ogv",
"videos/video1.mp4video.mp4"
];
v[1] = [
"videos/video2.webmvp8.webm",
"videos/video2.theora.ogv",
"videos/video2.mp4video.mp4"
];
v[2] = [
"videos/video3.webmvp8.webm",
"videos/video3.theora.ogv",
"videos/video3.mp4video.mp4"
];
function changeVid(n){
var video = document.getElementById('video');
if(Modernizr.video && Modernizr.video.webm) {
video.setAttribute("src", v[n][0]);
} else if(Modernizr.video && Modernizr.video.ogg) {
video.setAttribute("src", v[n][1]);
} else if(Modernizr.video && Modernizr.video.h264) {
video.setAttribute("src", v[n][2]);
}
video.load();
}
</script>
Hopefully this will help you :)
If you don't want to use Modernizr , you can always use CanPlayType().

Your original plan sounds fine to me. You'll probably find more browser quirks dealing with dynamically managing the <source> elements, as indicated here by the W3 spec note:
Dynamically modifying a source element and its attribute when the element is already inserted in a video or audio element will have no effect. To change what is playing, just use the src attribute on the media element directly, possibly making use of the canPlayType() method to pick from amongst available resources. Generally, manipulating source elements manually after the document has been parsed is an unncessarily[sic] complicated approach.
http://dev.w3.org/html5/spec/Overview.html#the-source-element

I solved this with this simple method
function changeSource(url) {
var video = document.getElementById('video');
video.src = url;
video.play();
}

Instead of getting the same video player to load new files, why not erase the entire <video> element and recreate it. Most browsers will automatically load it if the src's are correct.
Example (using Prototype):
var vid = new Element('video', { 'autoplay': 'autoplay', 'controls': 'controls' });
var src = new Element('source', { 'src': 'video.ogg', 'type': 'video/ogg' });
vid.update(src);
src.insert({ before: new Element('source', { 'src': 'video.mp4', 'type': 'video/mp4' }) });
$('container_div').update(vid);

According to the spec
Dynamically modifying a source element and its attribute when the
element is already inserted in a video or audio element will have no
effect. To change what is playing, just use the src attribute on the
media element directly, possibly making use of the canPlayType()
method to pick from amongst available resources. Generally,
manipulating source elements manually after the document has been
parsed is an unncessarily complicated approach.
So what you are trying to do is apparently not supposed to work.

Just put a div and update the content...
<script>
function setvideo(src) {
document.getElementById('div_video').innerHTML = '<video autoplay controls id="video_ctrl" style="height: 100px; width: 100px;"><source src="'+src+'" type="video/mp4"></video>';
document.getElementById('video_ctrl').play();
}
</script>
<button onClick="setvideo('video1.mp4');">Video1</button>
<div id="div_video"> </div>

Yaur: Although what you have copied and pasted is good advice, this does not mean that it is impossible to change the source element of an HTML5 video element elegantly, even in IE9 (or IE8 for that matter).(This solution does NOT involve replacing the entire video element, as it is bad coding practice).
A complete solution to changing/switching videos in HTML5 video tags via javascript can be found here and is tested in all HTML5 browser (Firefox, Chrome, Safari, IE9, etc).
If this helps, or if you're having trouble, please let me know.

This is my solution:
<video id="playVideo" width="680" height="400" controls="controls">
<source id="sourceVideo" src="{{video.videoHigh}}" type="video/mp4">
</video>
<br />
<button class="btn btn-warning" id="{{video.videoHigh}}" onclick="changeSource(this)">HD</button>
<button class="btn btn-warning" id="{{video.videoLow}}" onclick="changeSource(this)">Regular</button>
<script type="text/javascript">
var getVideo = document.getElementById("playVideo");
var getSource = document.getElementById("sourceVideo");
function changeSource(vid) {
var geturl = vid.id;
getSource .setAttribute("src", geturl);
getVideo .load()
getVideo .play();
getVideo .volume = 0.5;
}
</script>

I have a similar web app and am not facing that sort of problem at all. What i do is something like this:
var sources = new Array();
sources[0] = /path/to/file.mp4
sources[1] = /path/to/another/file.ogg
etc..
then when i want to change the sources i have a function that does something like this:
this.loadTrack = function(track){
var mediaSource = document.getElementsByTagName('source')[0];
mediaSource.src = sources[track];
var player = document.getElementsByTagName('video')[0];
player.load();
}
I do this so that the user can make their way through a playlist, but you could check for userAgent and then load the appropriate file that way. I tried using multiple source tags like everyone on the internet suggested, but i found it much cleaner, and much more reliable to manipulate the src attribute of a single source tag. The code above was written from memory, so i may have glossed over some of hte details, but the general idea is to dynamically change the src attribute of the source tag using javascript, when appropriate.

Another way you can do in Jquery.
HTML
<video id="videoclip" controls="controls" poster="" title="Video title">
<source id="mp4video" src="video/bigbunny.mp4" type="video/mp4" />
</video>
<div class="list-item">
<ul>
<li class="item" data-video = "video/bigbunny.mp4">Big Bunny.</li>
</ul>
</div>
Jquery
$(".list-item").find(".item").on("click", function() {
let videoData = $(this).data("video");
let videoSource = $("#videoclip").find("#mp4video");
videoSource.attr("src", videoData);
let autoplayVideo = $("#videoclip").get(0);
autoplayVideo.load();
autoplayVideo.play();
});

I come with this to change video source dynamically. "canplay" event sometime doesn't fire in Firefox so i have added "loadedmetadata". Also i pause previous video if there is one...
var loadVideo = function(movieUrl) {
console.log('loadVideo()');
$videoLoading.show();
var isReady = function (event) {
console.log('video.isReady(event)', event.type);
video.removeEventListener('canplay', isReady);
video.removeEventListener('loadedmetadata', isReady);
$videoLoading.hide();
video.currentTime = 0;
video.play();
},
whenPaused = function() {
console.log('video.whenPaused()');
video.removeEventListener('pause', whenPaused);
video.addEventListener('canplay', isReady, false);
video.addEventListener('loadedmetadata', isReady, false); // Sometimes Firefox don't trigger "canplay" event...
video.src = movieUrl; // Change actual source
};
if (video.src && !video.paused) {
video.addEventListener('pause', whenPaused, false);
video.pause();
}
else whenPaused();
};

Using the <source /> tags proved difficult for me in Chrome 14.0.835.202 specifically, although it worked fine for me in FireFox. (This could be my lack of knowledge, but I thought an alternate solution might be useful anyway.) So, I ended up just using a <video /> tag and setting the src attribute right on the video tag itself. The canPlayVideo('<mime type>') function was used to determine whether or not the specific browser could play the input video. The following works in FireFox and Chrome.
Incidently, both FireFox and Chrome are playing the "ogg" format, although Chrome recommends "webm". I put the check for browser support of "ogg" first only because other posts have mentioned that FireFox prefers the ogg source first (i.e. <source src="..." type="video/ogg"/> ). But, I haven't tested (and highly doubt) whether or not it the order in the code makes any difference at all when setting the "src" on the video tag.
HTML
<body onload="setupVideo();">
<video id="media" controls="true" preload="auto" src="">
</video>
</body>
JavaScript
function setupVideo() {
// You will probably get your video name differently
var videoName = "http://video-js.zencoder.com/oceans-clip.mp4";
// Get all of the uri's we support
var indexOfExtension = videoName.lastIndexOf(".");
//window.alert("found index of extension " + indexOfExtension);
var extension = videoName.substr(indexOfExtension, videoName.length - indexOfExtension);
//window.alert("extension is " + extension);
var ogguri = encodeURI(videoName.replace(extension, ".ogv"));
var webmuri = encodeURI(videoName.replace(extension, ".webm"));
var mp4uri = encodeURI(videoName.replace(extension, ".mp4"));
//window.alert(" URI is " + webmuri);
// Get the video element
var v = document.getElementById("media");
window.alert(" media is " + v);
// Test for support
if (v.canPlayType("video/ogg")) {
v.setAttribute("src", ogguri);
//window.alert("can play ogg");
}
else if (v.canPlayType("video/webm")) {
v.setAttribute("src", webmuri);
//window.alert("can play webm");
}
else if (v.canPlayType("video/mp4")) {
v.setAttribute("src", mp4uri);
//window.alert("can play mp4");
}
else {
window.alert("Can't play anything");
}
v.load();
v.play();
}

I have been researching this for quite a while and I am trying to do the same thing, so hopefully this will help someone else. I have been using crossbrowsertesting.com and literally testing this in almost every browser known to man. The solution I've got currently works in Opera, Chrome, Firefox 3.5+, IE8+, iPhone 3GS, iPhone 4, iPhone 4s, iPhone 5, iPhone 5s, iPad 1+, Android 2.3+, Windows Phone 8.
Dynamically Changing Sources
Dynamically changing the video is very difficult, and if you want a Flash fallback you will have to remove the video from the DOM/page and re-add it so that Flash will update because Flash will not recognize dynamic updates to Flash vars. If you're going to use JavaScript to change it dynamically, I would completely remove all <source> elements and just use canPlayType to set the src in JavaScript and break or return after the first supported video type and don't forget to dynamically update the flash var mp4. Also, some browsers won't register that you changed the source unless you call video.load(). I believe the issue with .load() you were experiencing can be fixed by first calling video.pause(). Removing and adding video elements can slow down the browser because it continues buffering the removed video, but there's a workaround.
Cross-browser Support
As far as the actual cross-browser portion, I arrived at Video For Everybody as well. I already tried the MediaelementJS Wordpress plugin, which turned out to cause a lot more issues than it resolved. I suspect the issues were due to the Wordpress plug-in and not the actually library. I'm trying to find something that works without JavaScript, if possible. So far, what I've come up with is this plain HTML:
<video width="300" height="150" controls="controls" poster="http://sandbox.thewikies.com/vfe-generator/images/big-buck-bunny_poster.jpg" class="responsive">
<source src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.ogv" type="video/ogg" />
<source src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4" type="video/mp4" />
<source src="http://clips.vorwaerts-gmbh.de/big_buck_bunny.webm" type="video/webm" />
<source src="http://alex-watson.net/wp-content/uploads/2014/07/big_buck_bunny.iphone.mp4" type="video/mp4" />
<source src="http://alex-watson.net/wp-content/uploads/2014/07/big_buck_bunny.iphone3g.mp4" type="video/mp4" />
<object type="application/x-shockwave-flash" data="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf" width="561" height="297">
<param name="movie" value="http://releases.flowplayer.org/swf/flowplayer-3.2.1.swf" />
<param name="allowFullScreen" value="true" />
<param name="wmode" value="transparent" />
<param name="flashVars" value="config={'playlist':['http://sandbox.thewikies.com/vfe-generator/images/big-buck-bunny_poster.jpg',{'url':'http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4','autoPlay':false}]}" />
<img alt="No Video" src="http://sandbox.thewikies.com/vfe-generator/images/big-buck-bunny_poster.jpg" width="561" height="297" title="No video playback capabilities, please download the video below" />
</object>
<strong>Download video:</strong> MP4 format | Ogg format | WebM format
</video>
Important notes:
Ended up putting the ogg as the first <source> because Mac OS Firefox quits trying to play the video if it encounters an MP4 as the first <source>.
The correct MIME types are important .ogv files should be video/ogg, not video/ogv
If you have HD video, the best transcoder I've found for HD quality OGG files is Firefogg
The .iphone.mp4 file is for iPhone 4+ which will only play videos that are MPEG-4 with H.264 Baseline 3 Video and AAC audio. The best transcoder I found for that format is Handbrake, using the iPhone & iPod Touch preset will work on iPhone 4+, but to get iPhone 3GS to work you need to use the iPod preset which has much lower resolution which I added as video.iphone3g.mp4.
In the future we will be able to use a media attribute on the <source> elements to target mobile devices with media queries, but right now the older Apple and Android devices don't support it well enough.
Edit:
I'm still using Video For Everybody but now I've transitioned to using FlowPlayer, to control the Flash fallback, which has an awesome JavaScript API that can be used to control it.

Try moving the OGG source to the top. I've noticed Firefox sometimes gets confused and stops the player when the one it wants to play, OGG, isn't first.
Worth a try.

You shouldn't try to change the src attribute of a source element, according to this spec note .
Dynamically modifying a source element and its attribute when the element is
already inserted in a video or audio element will have no effect. To
change what is playing, just use the src attribute on the media
element directly
So lets say you have:
<audio>
<source src='./first-src'/>
</audio>
To modify the src:
<audio src='./second-src'/>
<source src='./first-src'/>
</audio>

if you already have a loaded video and you try to upload a new one over that one make sure to use the videoRef.load() on the second one, otherwise it wont load.
*videoRef should be the ref of the displayed <video></video> tag

Using JavaScript and jQuery:
<script src="js/jquery.js"></script>
...
<video id="vid" width="1280" height="720" src="v/myvideo01.mp4" controls autoplay></video>
...
function chVid(vid) {
$("#vid").attr("src",vid);
}
...
<div onclick="chVid('v/myvideo02.mp4')">See my video #2!</div>

I ended up making the accepted ansower into a function and improving the resume to keep the time. TLDR
/**
* https://stackoverflow.com/a/18454389/4530300
* This inspired a little function to replace a video source and play the video.
* #param video
* #param source
* #param src
* #param type
*/
function swapSource(video, source, src, type) {
let dur = video.duration;
let t = video.currentTime;
// var video = document.getElementById('video');
// var source = document.createElement('source');
video.pause();
source.setAttribute('src', src);
source.setAttribute('type', type);
video.load();
video.currentTime = t;
// video.appendChild(source);
video.play();
console.log("Updated Sorce: ", {
src: source.getAttribute('src'),
type: source.getAttribute('type'),
});
}

Check if video is playable on browsers by Javascript

I have a video tag in my video-sharing website
<video src="/video-123"></video>
The video is uploaded by users, which can be MP4, MOV,... and can be played on some browser, while others cannot (based on video encoding, for example H.264 is widely supported, but H.265 or HEVC only supported on newer Safari).
In the case the browser cannot play the video, I want to detect by Javascript on that browser, in order to show an error message to users. How can I do that? Please help me.

Just insert any HTML tag inside <video> tag. Browsers which are supporting video format just will replace it.
<video src="/video-123">
<div>Your browser does not support HTML5 video.</div>
</video>
or:
<video>
<source src="/video-123.mp4" type="video/mp4">
<source src="/video-123.ogg" type="video/ogg">
<div>Your browser does not support HTML5 video.</div>
</video>

u can use html5 video player test
working js-demo
// https://gist.github.com/joe-watkins/710e5aa49a35382d6464
var html5VideoTest = function(){
var player = document.getElementById("video-player"),
loader = document.getElementById("video-loading"),
autoplay = false; // The <video> element
function detect_autoplay(acceptable_delay){
// create video element
var autoplay_test_content = document.createElement('video');
//create mp4 and webm sources, 5s long
var mp4 = document.createElement('source');
mp4.src = "data:video/mp4;base64,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";
var webm = document.createElement('source');
webm.src = "data:video/webm;base64,GkXfo49CgoR3ZWJtQoeBAUKFgQEYU4BnAQAAAAAAF60RTZt0vE27jFOrhBVJqWZTrIIQA027jFOrhBZUrmtTrIIQbE27jFOrhBFNm3RTrIIXmU27jFOrhBxTu2tTrIIWs+xPvwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA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//append sources to test video
autoplay_test_content.appendChild(webm);
autoplay_test_content.appendChild(mp4);
//set attributes -needs to be visible or IE squawks, so we move it way outside
autoplay_test_content.id = "base64_test_video";
autoplay_test_content.autoplay = true;
autoplay_test_content.style.position = "fixed";
autoplay_test_content.style.left = "5000px";
//add to DOM
document.getElementsByTagName("body")[0].appendChild(autoplay_test_content);
var base64_test_video = document.getElementById("base64_test_video");
//test for autoplay, 100 ms buffer
setTimeout(function(){
if(!base64_test_video.paused){
autoplay = true;
document.getElementById("output-support").innerHTML = "True"; // demo
}else{
document.getElementById("output-support").innerHTML = "False"; // demo
}
document.getElementsByTagName("body")[0].removeChild(autoplay_test_content);
},acceptable_delay);
}
var checkBuffered = function(){
setInterval(function(){
if(player.readyState == 4){ // VIDEO IS BUFFERED
loader.style.display = "none"; // demo
document.getElementById("output-buffered").innerHTML = "True"; // demo
player.style.display = "block"; // demo
clearInterval(checkBuffered);
}
},400);
},
init = function(){
detect_autoplay(100);
checkBuffered();
}
init();
}
html5VideoTest();

You can use the on error event to determine it
//Jquery
$(video).on("error",function(){
alert("error occured");
});
Sometimes due to encoding, some video can play the sound in the video but won't display pictures.

I'd be very interested to know if anyone has a genuine solution for this.
My experience is H.265/HEVC videos silently fail to render, but give no indication detectable by javsacript.
The <video> element does not fire an error event when you play(). It fires canplay, playing and timeupdate events, just like it does when the video is working. But nothing is rendered to the screen.

How to use the selected audio file using javascript, via <audio> tag in HTML 5?

How do I deploy a selected audio file using JavaScript via the <audio> tag in HTML5?
My code is like this:
<audio controls id="audio1">
<source src="" type="audio/ogg">
<source src="" type="audio/mpeg">
</audio>
I don't want to give src manually. Instead, I want to set it dynamically via JavaScript.
In JavaScript, for selecting the src from files:
document.querySelector('#fileSelect').addEventListener('click', function(e) {
// Use the native click() of the file input.
audio.src = document.querySelector('#fileElem').click();
}, false);
I'd welcome any suggestions. Thanks.

Instead of creating a tag why don't you just create an object Audio and do something like this :
var som = new Audio();
som.src = "powerup.mp3";
som.load();
and after audio.readyState >= audio.HAVE_CURRENT_DATA
you can call som.play();
This is a sample that wrote some time ago for a game framework : https://github.com/hamilton-lima/vaca5/blob/master/lib/audio.js

I'm not exactly sure if I understand what you're trying to achieve. But to set source for audio you do as you've posted:
var element = document.getElementById('audio');
if (element.canPlayType('audio/wav')) {
element.src = "link";
} else if (element.canPlayType('audio/mpeg')) {
element.src = "link";
} else {
alert('Your browser does not support wav/mpeg audio.');
}
Is it not working? What's exactly the problem? Maybe prepare some fiddle to get closer look what are you trying to achieve.

Loading Audio Element After Dynamically Changing the Source

I have a couple of audio elements that appear in the body of my page. They look like this.
<audio id="sound1" preload="auto">
<source id="sound1source" src="../../Content/Audio/gau.mp3">
//add .ogg here later
</audio>
<audio id="sound2" preload="auto">
<source id="sound2source" src="../../Content/Audio/mah.mp3">
//add .ogg here later
</audio>
The audio plays when a user mouses over certain divs. Here's the code that triggers it.
var audio = $("#sound1")[0];
$("#ChoiceA").mouseenter(function () {
audio.play();
});
var audio2 = $("#sound2")[0];
$("#ChoiceB").mouseenter(function () {
audio2.play();
});
Everything above works fine. My problem occurs when I attempt to dynamically change the source element after making an ajax call. Here's my javascript that accomplishes that.
var src1 = "../../Content/Audio/" + data.nouns[0].Audio1 + ".mp3";
var src2 = "../../Content/Audio/" + data.nouns[1].Audio1 + ".mp3";
$("#sound1source").attr("src", src1);
$("#sound2source").attr("src", src2);
When I inspect the page after triggering the ajax call to change the source path for the audio elements, I see that the source is updated. No problem there. The problem is that the audio that the new paths point to does not play.
After hunting around I found this note on w3.org "Dynamically modifying a source element and its attribute when the element is already inserted in a video or audio element will have no effect. To change what is playing, either just use the src attribute on the media element directly, or call the load() method on the media element after manipulating the source elements."
The comment on w3.org seems to be related so I tried calling $('#sound1').load() and also $('#sound1source').load(). Neither solved my problem.
Can someone tell me what I've done wrong? If I need to cause the audio element to load again after dynamically changing the src, how do I do that?
-------------UPDATE-------------
Based on Swatkins suggestion I created the following function to create the audio tag when the user mouses over the target div. Unfortunately this has not solved the problem either.
function attachAudio1(src) {
$('#audio1').remove();
var audio = $('<audio>');
audio.attr("src", src);
audio.attr("id", "audio1");
audio.appendTo('body');
attachPlayAction();
};
function attachPlayAction() {
var audio = $("#audio1")[0];
$('#ChoiceA').live('mouseenter', function () {
audio.play();
});
};

You should call load like this:
var audio = $("#sound1")[0];
$("#ChoiceA").mouseenter(function () {
audio.load();
audio.play();
});
var audio2 = $("#sound2")[0];
$("#ChoiceB").mouseenter(function () {
audio.load();
audio2.play();
});
Have not tested doing it like above, but have testet this previously with a seperate function looking something like this:
<audio id="sound1" preload="auto" src="../../Content/Audio/gau.mp3">
function changeAudio(){
audio = document.getElementById("sound1");
audio.src = "../../Content/Audio/" + data.nouns[0].Audio1 + ".mp3";
audio.load();
audio.play();
}
$("#ChoiceA").mouseenter(function () {
changeAudio();
});
and that worked fine for me?
EDIT: Adding a fiddle, maybe that will help you figure this out?
http://jsfiddle.net/Z3VrV/

This is tricky. I would try replacing the whole <audio> element instead of just changing its source. This way, the new audio element hasn't been added to the page, so it will be forced to load the file.

load() followed by play() right away leads to trouble. Trying listening for the canplay event before attempting to play the audio as suggested in https://stackoverflow.com/a/8705478/1374208

Using Javascript to play an audioelement (html5)

I'm trying to figure out how to trigger playing an audio from javascript. I got some html which looks like:
<div class='audio' >foo
<audio preload='auto' controls src='test.wav'>
<b>Your browser does not support the audio tag.</b>
</audio>
</div>
And I'm trying to trigger it with:
$(document).ready(function () {
$('.audio').each(function(){
var audio = $(this).find('audio').get();
$(this).click(function(){
audio.volume = 100;
alert('1 '+audio);
audio.play();
alert('2');
});
});
});
alert('1 '+audio); works as expected and reports audio as HTMLAudioElement. However alert('2'); is not called because I get the error 'audio.play' is not a function. What can I do to solve this problem?

Your code looks perfect. What is the error you are getting is it "alert.play" is not a function or "audio.play" is not a function.
I think
var audio = $(this).find('audio').get();
returns an array try this
var audio = $(this).find('audio').get(0);

Controlling audio without jQuery using just JavaScript is even easier if you give the audio tag an ID:
<audio id="myAudioTagID" type="audio/mpeg" src="sound.mp3"></audio>
then you can simply get the element and apply .pause(), .start(), stop() :
var audio = document.getElementById("myAudioTagID");
audio.play();
audio.pause();
audio.stop();