changing source on html5 video tag - javascript

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'),
});
}

Related

Pausing HTML Embedded Video

I'm using this kind of cross-broswer embedding:
<video width="549" height="309" controls poster="video/stills/index_demo_videoScreen.jpg" style="margin-top:20px;">
<source src="video/2014-reel-web.mp4" type="video/mp4">
<source src="video/2014-reel-web.ogg" type="video/ogg">
<embed width="549" height="309" allowfullscreen="true" allowscriptaccess="always" type="application/x-shockwave-flash" src="video/2014-reel-web.swf">
</video>
It's not the "video for everyone" solution, but it is a lot simpler. Whatever it doesn't work on, I don't particularly care.
What I need to know is how can I stop the video from playing when the user navigates away from it (as it will still be on the page, just not visible)?
I have this:
$("video").each(function(index) {
$(this)[0].pause();
});
But that doesn't work if the video has had to fall back to the swf object. Is it even possible to target it and get it to stop playing?
One thing I tried was using jQuery to replace the HTML content of the video tag with nothing (on the theory that I could rebuild the contents, thus resetting things) but even that just silently does nothing.
UPDATE: I got it to work with pure JavaScript (DEMO) but as you said this solution does not apply to older browsers that don't support <video>.
For new browsers add onblur="vpause()" to video element then this:
var test = document.getElementById('video');
test.addEventListener("play", vfocus, false)
test.focus();
function vfocus(){
test.focus();
}
function vpause() {
test.pause();
}
For old browsers:
http://mediaelementjs.com/

HTML5 video source changing

I have a video tag like this. All this videos have to play dynamically one after other
I tried writing some javascript functions in eventlistner "progress" of the video, but not working.How to play these videos automatically?anybody please suggest any codes in javascript or jquery
<div id="divVid">
<video id="video1" width="320" height="240" autoplay >
<source src="vid_future technology_n.mp4#t=20,50" >
Your browser does not support the video tag.
</video>
</div>
JS Code (Updated from comment section)
document.getElementById("video1")
.addEventListener("progress",
function () {
var i = 0;
var vid = document.getElementById("video1");
if (vid.paused) {
if (vid.currentSrc == myvids[i]) {
vid.currentSrc = myvids[i + 1]; } i = i + 1;
}
});
The set of <source> elements provide alternative formats for the video for different devices, not a playlist.
If you want to have a playlist, then listen for an ended event and change the src with JavaScript.
In response to edits to the question:
No, really change the src. You are trying to change the currentSource which is defined as being readonly
I said ended. Don't touch progress, you what to play the next video when the last one is finished, not when a tiny chunk of it has played
The list of <source> elements still isn't a playlist. Don't try to use them as such. Keep the list of videos somewhere else (e.g. a JS array).

video fallback using object tag doesn't work with appendChild

I've got a video player application that uses a variant of video For everybody. With a HTML5 <video> tag enclosing a <object> tag for flash falback on internet exploder. It all works well when I do this statically, however when the video elements are built using javascript, it seems that IE9 doesn't like this.
If i use static code like this it works:
<video id="video" width="360" height="240>
<source type="video/ogg" src="content/mov1.ogv"></source>
<source type="video/mp4" src="content/mov1.mp4"></source>
<object data="player.swf" type="application/x-shockwave-flash" height="384" width="512">
<param name="movie" value="player.swf" >
<param value="autostart=true&file=/mov1.mp4" name="flashvars">
</object>
</video>
but when I use a javascript function to build the video player as below, it doesn't.
function makeV4EPlayer(mp4URL, ogvURL, movieWidth, movieHeight, displayname){
//create the video element and set its attributes
var videoObject= document.createElement('video');
videoObject.setAttribute("id", "video");
videoObject.setAttribute("width", movieWidth);
videoObject.setAttribute("height", movieHeight);
//add mp4 source
var mp4Src=document.createElement('source');
mp4Src.setAttribute("src", mp4URL);
mp4Src.setAttribute("type","video/mp4");
videoObject.appendChild(mp4Src);
//add ogv source
var oggSrc=document.createElement('source');
oggSrc.setAttribute("src", ogvURL);
oggSrc.setAttribute("type","video/ogg");
videoObject.appendChild(oggSrc);
//add object with flash player
var flashObject=document.createElement('object');
flashObject.setAttribute("width", movieWidth);
flashObject.setAttribute("height", movieHeight);
flashObject.setAttribute("type", "application/x-shockwave-flash");
flashObject.setAttribute("data","swf/player.swf");
var params1 = document.createElement('param');
params1.setAttribute("name", "movie");
params1.setAttribute("value","swf/player.swf");
var params2=document.createElement('param');
params2.setAttribute("name","flashvars");
params2.setAttribute("value",'autostart=true' + '&file=/' + mp4URL);
flashObject.appendChild(params1);
flashObject.appendChild(params2);
videoObject.appendChild(flashObject);
return videoObject;
}
The Javascript builds the <video> tag just fine, and populates it with all the stuff, it's just that IE won't play it. Of course it works happily on every other browser in the universe.
When I use the IE9 developer tools to inspect the pages I note that in the static version it sees the video tag and the object tag as being siblings - that is the object isn't inside the video tag, but in the javascript version the object is nested inside the video tag. That I believe is the nub of the problem.
I don't think it's relevant, but I'm using the JW Player as my fallback flash player.
The IE doesn't support the ogg format (also see the browser compatibility page), the other brwoser do.
Maybe the MP4 URL is not correct or the file broken?
=== UPDATE ===
In the following line you are using imagesrc which is not defined before:
params2.setAttribute("value",'autostart=true' + imagesrc + '&file=/' + mp4URL);
You should initialze it before.
=== UDPATE ===
If the object tag shouldn't be in the video tag you have to make changes, because you can only return one element. E.g. put both in a wrapper element:
function makeV4EPlayer(mp4URL, ogvURL, movieWidth, movieHeight, displayname){
// create a wrapper
var videoWrapper = document.createElement('div');
videoWrapper.style.width = movieWidth+'px';
videoWrapper.style.height = movieHeight+'px';
videoWrapper.style.padding = '0';
videoWrapper.style.margin = '0';
//create the video element and set its attributes
var videoObject= document.createElement('video');
videoObject.setAttribute("id", "video");
videoObject.setAttribute("width", movieWidth);
videoObject.setAttribute("height", movieHeight);
//add mp4 source
var mp4Src=document.createElement('source');
mp4Src.setAttribute("src", mp4URL);
mp4Src.setAttribute("type","video/mp4");
videoObject.appendChild(mp4Src);
//add ogv source
var oggSrc=document.createElement('source');
oggSrc.setAttribute("src", ogvURL);
oggSrc.setAttribute("type","video/ogg");
videoObject.appendChild(oggSrc);
// add video to wrapper
videoWrapper.appendChild(videoObject);
//add object with flash player
var flashObject=document.createElement('object');
flashObject.setAttribute("width", movieWidth);
flashObject.setAttribute("height", movieHeight);
flashObject.setAttribute("type", "application/x-shockwave-flash");
flashObject.setAttribute("data","swf/player.swf");
var params1 = document.createElement('param');
params1.setAttribute("name", "movie");
params1.setAttribute("value","swf/player.swf");
var params2=document.createElement('param');
params2.setAttribute("name","flashvars");
params2.setAttribute("value",'autostart=true' + '&file=/' + mp4URL);
flashObject.appendChild(params1);
flashObject.appendChild(params2);
// add flash player to wrapper
videoWrapper.appendChild(flashObject);
return videoWrapper;
}
You can also test with this jsfiddle (I've no IE9 so I can't do it for you).
Alternatively, you can create two functions, one for the video tag, the other for the object tag.

Changing <source> with HTML5 Audio works in Chrome but not Safari

I'm trying to make an HTML5 audio playlist that will work in each major browser: Chrome,Safari, Firefox, IE9+. However, I can't figure out how to change the sources in a cross browser compatible way.
UPDATED For example, changing the <source> tag's srcs works in Chrome but not Safari. While #eivers88's solution below using canPlayType works it seems easier to me just to change the <source> tag's srcs. Can anyone explain to me why my code directly below works in Chrome but not Safari?
JS:
var audioPlayer=document.getElementById('audioPlayer');
var mp4Source=$('source#mp4');
var oggSource=$('source#ogg');
$('button').click(function(){
audioPlayer.pause();
mp4Source.attr('src', 'newFile.mp4');
oggSource.attr('src', 'newFile.ogg');
audioPlayer.load();
audioPlayer.play();
});
HTML:
<button type="button">Next song</button>
<audio id="audioPlayer">
<source id="mp4" src="firstFile.mp4" type="audio/mp4"/>
<source id="ogg" src="firstFile.ogg" type="audio/ogg" />
</audio>
Inspecting the HTML after the button click, the <source src=""/> does change in Safari, its just that the HTTP request is not made, so they the files don't get load()ed and play()ed. Does anyone have any thoughts on this?
Here is a working exapmle. It's a little bit different from what you have but hopefully this can be helpful.
HTML:
<button type="button">Next song</button>
Javascript/jquery:
var songs = [
'1976', 'Ballad of Gloria Featherbottom', 'Black Powder'
]
var track = 0;
var audioType = '.mp3'
var audioPlayer = document.createElement('audio');
$(window).load(function() {
if(!!audioPlayer.canPlayType('audio/ogg') === true){
audioType = '.ogg' //For firefox and others who do not support .mp3
}
audioPlayer.setAttribute('src', 'music/' + songs[track] + audioType);
audioPlayer.setAttribute('controls', 'controls');
audioPlayer.setAttribute('id', 'audioPlayer');
$('body').append(audioPlayer);
audioPlayer.load();
audioPlayer.play();
});
$('button').on('click', function(){
audioPlayer.pause();
if(track < songs.length - 1){
track++;
audioPlayer.setAttribute('src', 'music/' + songs[track] + audioType);
audioPlayer.load();
audioPlayer.play();
}
else {
track = 0;
audioPlayer.setAttribute('src', 'music/' + songs[track] + audioType);
audioPlayer.load();
audioPlayer.play();
}
})
For some reason, Safari can't use the <source> tags for swapping between songs but Chrome can. Just changing what gets loaded into the src attribute on the <audio> tag works on both Chrome and Safari but then there is the ogg vs. mp3 issue.
I guess one way to get around this ogg vs. mp3 issue is to use Modernizr does feature detection to load the ogg mime-type in Firefox and the mp3 in Chrome/Safari. Here's a reference on that:
Detecting html5 audio support with Modernizr.
Just a quick addition to the topic (in 2023):
I had a similar problem. The code was working in Safari, but not Chrome.
I had Javascript code that swapped the src of the <source> element. That worked fine in Safari, but Chrome refused to recognize the file and showed a disabled player state. What I was missing, and what I learned here, is that you need to call load() as well.
So adding this fixed it for me.
audioPlayer.load();
Safari seems to auto-detect the source change, Chrome did not.

Dynamically using the first frame as poster in HTML5 video?

I'm wondering if there's any straightforward way to achieve this effect, without needing backend code to extract a frame, save it as a jpg and database it somewhere.
An effect whereby the first frame of the video just shows up as the poster when the video loads would be so helpful (it would only work if the browser can play back the video obviously, which might be a little different from how poster traditionally works, but that is not a concern.
Did you try the following?
just append time in seconds #t={seconds} to source URL:
<video controls width="360">
<source src="https://test-videos.co.uk/vids/bigbuckbunny/mp4/h264/1080/Big_Buck_Bunny_1080_10s_1MB.mp4#t=0.1" type="video/mp4" />
</video>
I have chosen a fraction of second (0.1) to keep number of frames small, because I have the suspect that if you put 1 second, it would "preload" the first 1 second of video (i.e. 24 frames or more ....). Just in case ...
Works fine on Chrome and Firefox on desktop :)
Works not on Android mobile, though :(
I did not test on iOS, iPhone, IE yet ??
Edit May 2021:
I realized that many modern browsers now show automatically a poster of first frame.
Seems like they heard us :-)
To make it simple you can just add preload="metadata" to your video tag and the second of the first frame #t=0.5 to your video source:
<video width="400" controls="controls" preload="metadata">
<source src="https://www.w3schools.com/html/mov_bbb.mp4#t=0.5" type="video/mp4">
</video>
Best of luck!
There is a Popcorn.js plugin called Popcorn.capture which will allow you to create posters from any frame of your HTML5 video.
There is a limitation that is imposed by the browser that prohibits reading pixel data of resources requested across domains (using the canvas API to record the current value of a frame). The source video must be hosted on the same domain as the script and html page that is requesting it for this approach to work.
The code to create poster using this plugin is quite simple:
// This block of code must be run _after_ the DOM is ready
// This will capture the frame at the 10th second and create a poster
var video = Popcorn( "#video-id" );
// Once the video has loaded into memory, we can capture the poster
video.listen( "canplayall", function() {
this.currentTime( 10 ).capture();
});
I recently did this for a recent project that works on desktop and mobile. The trick was getting it to work on iPhone.
Setting preload=metadata works on desktop and android devices but not iPhone.
For iPhones I had to set it to autoplay so the poster image automatically appears on initial load. iPhones will prevent the video from auto playing, but the poster image appears as the result.
I had to do a check for iPhone using Pavan's answer found here. Detect iPhone Browser. Then use the proper video tag with or without autoplay depending on the device.
var agent = navigator.userAgent;
var isIphone = ((agent.indexOf('iPhone') != -1) || (agent.indexOf('iPod') != -1)) ;
$videoTag = "";
if(isIphone()) {
$videoTag = '<video controls autoplay preload="metadata">';
} else {
$videoTag = '<video controls preload="metadata">';
}
You can set preload='auto' on the video element to load the first frame of the video automatically.
Solution for #2, #3 etc. frames. We need attach disposable handler .one() for resetting default frame.
<video width="300" height="150" id='my-video'>
<source src="testvideo.mp4#t=2" type="video/mp4" />
</video>
$(function () {
let videoJs = videojs('my-video');
videoJs.one('play', function () {
this.currentTime(0);
});
});
I found a great way to dynamically add poster to a video!
To show the desired frame from video (in my case it's the frame at 1.75 seconds) - add preload="metadata" to the video element and #t=1.75 to the end of source URL.
Add eventListener to the video element that will listen for play event only once.
Once the event is emitted reset the video time.
<video width="100%" controls="controls" preload="metadata" id="myVid">
<source src="path/to/your/video#t=1.75" type="video/mp4">
</video>
<script>
var el = document.getElementById('myVid');
el.addEventListener('play', () => {
el.currentTime = 0;
}, { once: true });
</script>

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