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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'),
});
}

How to make users STOP the execution of an HTML5 audio autoplay file clicking anything on the page?

I'm working on a page that, on my client's request, loads playing a background soundtrack.
Of course it's just for those users who are not navigating with audio autoplay disabled.
So the simple piece of code used to start playing the music is something like the following:
<audio autoplay id="background-soundtrack">
<source src="mytrack.mp3" type="audio/mpeg">
</audio>
I'd like to make music stop (even better: make it fade out in a matter of a few seconds) as soon as the user clicks anywhere on the page -- it should work tapping on mobile devices too.
Can you please suggesitng me a smart way to achieve my goal?
It doesn't matter if it's pure JavaScript or jQuery.
Thanks!

try this jquery:
$('document').on('click','body',function(){
if ($('#background-soundtrack').paused == false){
$('#background-soundtrack').animate({volume: 0}, 1500,
//1500 duration time
function(){
$('#background-soundtrack').pause()
});
}
});

The HTML5 audio elements has the pause method, that you can use at "onClick" (work in touch too) event on body, document, window...
Like this (I delete the "-" in id):
document.onclick = function(e){
backgroundsoundtrack.pause();
}
<audio autoplay id="backgroundsoundtrack">
<source src="mytrack.mp3" type="audio/mpeg">
</audio>

How to handle "Uncaught (in promise) DOMException: play() failed because the user didn't interact with the document first." on Desktop with Chrome 66?

I'm getting the error message..
Uncaught (in promise) DOMException: play() failed because the user didn't interact with the document first.
..when trying to play video on desktop using Chrome version 66.
I did find an ad that began playback automatically on a website however using the following HTML:
<video
title="Advertisement"
webkit-playsinline="true"
playsinline="true"
style="background-color: rgb(0, 0, 0); position: absolute; width: 640px; height: 360px;"
src="http://ds.serving-sys.com/BurstingRes/Site-2500/Type-16/1ff26f6a-aa27-4b30-a264-df2173c79623.mp4"
autoplay=""></video>
So is by-passing Chrome v66's autoplay blocker really as easy as just adding the webkit-playsinline="true", playsinline="true", and autoplay="" attributes to the <video> element? Are there any negative consequences to this?

To make the autoplay on html 5 elements work after the chrome 66 update you just need to add the muted property to the video element.
So your current video HTML
<video
title="Advertisement"
webkit-playsinline="true"
playsinline="true"
style="background-color: rgb(0, 0, 0); position: absolute; width: 640px; height: 360px;"
src="http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4"
autoplay=""></video>
Just needs muted="muted"
<video
title="Advertisement"
style="background-color: rgb(0, 0, 0); position: absolute; width: 640px; height: 360px;"
src="http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4"
autoplay="true"
muted="muted"></video>
I believe the chrome 66 update is trying to stop tabs creating random noise on the users tabs. That's why the muted property make the autoplay work again.

For me (in Angular project) this code helped:
In HTML you should add autoplay muted
In JS/TS
playVideo() {
const media = this.videoplayer.nativeElement;
media.muted = true; // without this line it's not working although I have "muted" in HTML
media.play();
}

Try to use mousemove event listener
var audio = document.createElement("AUDIO")
document.body.appendChild(audio);
audio.src = "./audio/rain.m4a"
document.body.addEventListener("mousemove", function () {
audio.play()
})

The best solution i found out is to mute the video
HTML
<video loop muted autoplay id="videomain">
<source src="videoname.mp4" type="video/mp4">
</video>

Answering the question at hand...
No it's not enough to have these attributes, to be able to autoplay a media with audio you need to have an user-gesture registered on your document.
But, this limitation is very weak: if you did receive this user-gesture on the parent document, and your video got loaded from an iframe, then you could play it...
So take for instance this fiddle, which is only
<video src="myvidwithsound.webm" autoplay=""></video>
At first load, and if you don't click anywhere, it will not run, because we don't have any event registered yet.
But once you click the "Run" button, then the parent document (jsfiddle.net) did receive an user-gesture, and now the video plays, even though it is technically loaded in a different document.
But the following snippet, since it requires you to actually click the Run code snippet button, will autoplay.
<video src="https://upload.wikimedia.org/wikipedia/commons/transcoded/2/22/Volcano_Lava_Sample.webm/Volcano_Lava_Sample.webm.360p.webm" autoplay=""></video>
This means that your ad was probably able to play because you did provide an user-gesture to the main page.
Now, note that Safari and Mobile Chrome have stricter rules than that, and will require you to actually trigger at least once the play() method programmatically on the <video> or <audio> element from the user-event handler itself.
btn.onclick = e => {
// mark our MediaElement as user-approved
vid.play().then(()=>vid.pause());
// now we can do whatever we want at any time with this MediaElement
setTimeout(()=> vid.play(), 3000);
};
<button id="btn">play in 3s</button>
<video
src="https://upload.wikimedia.org/wikipedia/commons/transcoded/2/22/Volcano_Lava_Sample.webm/Volcano_Lava_Sample.webm.360p.webm" id="vid"></video>
And if you don't need the audio, then simply don't attach it to your media, a video with only a video track is also allowed to autoplay, and will reduce your user's bandwidth usage.

Extend the DOM Element, Handle the Error, and Degrade Gracefully
Below I use the prototype function to wrap the native DOM play function, grab its promise, and then degrade to a play button if the browser throws an exception. This extension addresses the shortcoming of the browser and is plug-n-play in any page with knowledge of the target element(s).
// JavaScript
// Wrap the native DOM audio element play function and handle any autoplay errors
Audio.prototype.play = (function(play) {
return function () {
var audio = this,
args = arguments,
promise = play.apply(audio, args);
if (promise !== undefined) {
promise.catch(_ => {
// Autoplay was prevented. This is optional, but add a button to start playing.
var el = document.createElement("button");
el.innerHTML = "Play";
el.addEventListener("click", function(){play.apply(audio, args);});
this.parentNode.insertBefore(el, this.nextSibling)
});
}
};
})(Audio.prototype.play);
// Try automatically playing our audio via script. This would normally trigger and error.
document.getElementById('MyAudioElement').play()
<!-- HTML -->
<audio id="MyAudioElement" autoplay>
<source src="https://www.w3schools.com/html/horse.ogg" type="audio/ogg">
<source src="https://www.w3schools.com/html/horse.mp3" type="audio/mpeg">
Your browser does not support the audio element.
</audio>

I got this error
Uncaught (in promise) DOMException: play() failed because the user didn't interact with the document first.
And here's what I did in my Angular Project
Key Point: Don't ever assume a video will play, and don't show a pause button when the video is not actually playing.
You should always look at the Promise returned by the play function to see if it was rejected:
ngOnInit(): void{
this.ensureVideoPlays();
}
private ensureVideoPlays(): void{
const video = document.querySelector("video");
if(!video) return;
const promise = video.play();
if(promise !== undefined){
promise.then(() => {
// Autoplay started
}).catch(error => {
// Autoplay was prevented.
video.muted = true;
video.play();
});
}
}
Source: Autoplay policy

In my case, I had to do this
// Initialization in the dom
// Consider the muted attribute
<audio id="notification" src="path/to/sound.mp3" muted></audio>
// in the js code unmute the audio once the event happened
document.getElementById('notification').muted = false;
document.getElementById('notification').play();

According to the new browser policy, the user must interact with DOM first before playing the Audio element.
If you want to play the media on page load then you can simply add autoplay property to audio element in HTML like this
<video id="video" src="./music.mp4" autoplay>
or if you don't want to do autoplay then you can handle this using Javascript. Since the autoplay property is set to true, media will be played, we can simply mute the media.
document.getElementById('video').autoplay = true;
document.getElementById('video').muted = true;
Imp: Now Whenever you play the media don't forget to turn the muted property to false. Like this
document.getElementById('video').muted = false;
document.getElementById('video').play();
Or you can also show a simple popup where the user will click the allow button in the modal. So he interacts with DOM first, then you don't need anything to do

I had a similar problem, I need to play the video without muting it. The way i did this, wait for a second then triggered the event by button. Here is my code
if (playVideo == '1') {
setTimeout(function() {
$("#watch_video_btn").trigger('click');
}, 1000);
}

Chrome needs a user interaction for the video to be autoplayed or played via js (video.play()).
But the interaction can be of any kind, in any moment.
If you just click random on the page, the video will autoplay.
I resolved then, adding a button (only on chrome browsers) that says "enable video autoplay". The button does nothing, but just clicking it, is the required user interaction for any further video.

I changed my UI to have the user press a button to load the website (and when the website loads after they click the button, the audio plays)
Since they interact with the DOM, then the audio plays!!!

In my case it's just a click sound which is automatically invoked at the start (which I don't mind if it's silenced). So I use:
const clickSound = new Audio('click.wav');
clickSound.play().catch(function (error) {
console.log("Chrome cannot play sound without user interaction first")});
to get rid of the error.

I had some issues playing on Android Phone.
After few tries I found out that when Data Saver is on there is no auto play:
There is no autoplay if Data Saver mode is enabled. If Data Saver mode is enabled, autoplay is disabled in Media settings.
Source

I encountered a similar error with while attempting to play an audio file. At first, it was working, then it stopped working when I started using ChangeDetector's markForCheck method in the same function to trigger a re-render when a promise resolves (I had an issue with view rendering).
When I changed the markForCheck to detectChanges it started working again. I really can't explain what happened, I just thought of dropping this here, perhaps it would help someone.

You should have added muted attribute inside your videoElement for your code work as expected. Look bellow ..
<video id="IPcamerastream" muted="muted" autoplay src="videoplayback%20(1).mp4" width="960" height="540"></video>
Don' t forget to add a valid video link as source

Open chrome://settings/content/sound
Setting No user gesture is required
Relaunch Chrome

Audio Autoplay property does not work in MS Edge

Type Chrome://flags in the address-bar
Search: Autoplay
Autoplay Policy
Policy used when deciding if audio or video is allowed
to autoplay.
– Mac, Windows, Linux, Chrome OS, Android
Set this to "No user gesture is required"
Relaunch Chrome and you don't have to change any code

Change firefox playback bar into a onclick button for audio

SAME ISSUE! As we all know firefox and audio is a problem because of patents and such. I found this little code on the internet to play my sounfile.
I would like to play multiple files instead of just one while having the display bar not show up in the browser
you can change the player width to 0 but than the user can not click the play button :P
Is there a way of possibly having the sound play on click of a link or button.
Please note. Do not give me codes that have no compatibility outside chrome and ie.
HTML
<audio id="audioplayer" preload controls loop style="width:400px;">
<source src="sounds/sound1.mp3">
<source src="sounds/sound1.caf">
</audio>
Javascript
<script type="text/javascript">
var audioTag = document.createElement('audio');
if (!(!!(audioTag.canPlayType) && ("no" != audioTag.canPlayType("audio/mpeg")) && ("" != audioTag.canPlayType("audio/mpeg")))) {
AudioPlayer.embed("audioplayer", {soundFile: "sounds/sound1.mp3"});
}
</script>
RECAP:
Have the sound play on a button or link click.
Have multiple sounds available to play (not just one)
Compatibility with firefox
non visible soundbar.

Still learning myself. But this is a button, with a script to play an audio file. (part of my own solution) Plays only 1 sound at a time, but doesn't show anything about it.
You could also make a funtion like this, without setting the src, using the pause() command.
currenttime is used to change the part where the audio file was.
Sound play button<br>
<script>
sound = new Audio();
function playSnd(soundSrc) {
sound.src = soundSrc;
sound.play();
}
</script>

Start HTML5 video at a particular position when loading?

I need HTML5 video to start at certain point. Let's say at time 50 seconds onward.
I tried but its not working as expected. is there something i am doing wrong?
Here is the code:
<video id="vid1" width="640" height="360">
<source src="file.webm" type="video/webm" />
Your browser does not support the video tag.
</video>
<script>
document.getElementById('vid1').currentTime = 50;
</script>
When the page loads, it just starts playing from beginning.
However if I call this during playback like after some time, it works fine.
Is there anything I am missing?

You have to wait until the browser knows the duration of the video before you can seek to a particular time. So, I think you want to wait for the 'loadedmetadata' event something like this:
document.getElementById('vid1').addEventListener('loadedmetadata', function() {
this.currentTime = 50;
}, false);

WITHOUT USING JAVASCRIPT
Just add #t=[(start_time), (end_time)] to the end of your media URL. The only setback (if you want to see it that way) is you'll need to know how long your video is to indicate the end time.
Example:
<video>
<source src="splash.mp4#t=10,20" type="video/mp4">
</video>
Notes: Not supported in IE

You can link directly with Media Fragments URI, just change the filename to file.webm#t=50
Here's an example
This is pretty cool, you can do all sorts of things. But I don't know the current state of browser support.

adjust video start and end time when using the video tag in html5;
http://www.yoursite.com/yourfolder/yourfile.mp4#t=5,15
where left of comma is start time in seconds, right of comma is end time in seconds.
drop the comma and end time to effect the start time only.

On Safari Mac for an HLS source, I needed to use the loadeddata event instead of the metadata event.