I'm use a tag html5 video + hls.js for video streaming .m3u8
<div class="container-video">
<video id="video"
width="700"
height="400"
preload="auto"
controls>
<source [src]="videoLink" type="application/x-mpegURL">
</video>
</div>
playVideoLive(videoLink) {
const video = document.getElementsByTagName('video')[0];
if (Hls.isSupported()) {
var hls = new Hls();
hls.loadSource(videoLink);
hls.attachMedia(video);
hls.on(Hls.Events.MANIFEST_PARSED, function () {
video.play();
});
}
else if (video.canPlayType('application/vnd.apple.mpegurl')) {
video.src = videoLink;
video.addEventListener('canplay', function () {
video.play();
});
}
}
Hoe i can show the dropdown with the list of quality video?
You can use an extra package to add the a track selector - there may be others but this one seems quite popular: https://www.npmjs.com/package/videojs-hls-quality-selector
You can also add your own controls and do it via the API using: https://github.com/video-dev/hls.js/blob/master/docs/API.md#hlscurrentlevel
There is a demo which uses the API here (at the time of writing) - go to the bottom of the demo page to see the levels and you can click on them there: https://hls-js-dev.netlify.app/demo/
Related
I am trying to lazy load my html video. It's in my WordPress template and I want for video to load when user get to its viewpoint.
I am new in JS so I think something is wrong. How can I test if lazy loading is working correctly?
Maybe my function is not valid?
<video id="myVideo" autoplay loop muted playsinline src="<?= VIDEO ?>/video_footer.mp4">
<source data-src="<?= VIDEO ?>/video_footer.mp4" type="video/mp4">
</video>
js:
$(function() {
$("video.myVideo source").each(function() {
var sourceFile = $(this).attr('data-src');
$(this).attr("src", sourceFile);
var video = this.parentElement;
video.load();
video.play();
});
});
It's unlikely that is working as it is.
You have already set the source to video so even if the function is working, the video file is already there, so no lazy load...
This is the correct setup:
<video id="myVideo" autoplay loop muted playsinline src="">
<source data-src="<?= VIDEO ?>/video_footer.mp4" type="video/mp4">
</video>
Then you can check if you function works
Another solution is to use intersection observer and do it with pure JavaScript, simple, lightweight and works in most cases
Lazy load video with pure JavaScript:
<script type="text/javascript">
const lazyvideo = document.querySelectorAll('.lazy-video');
observer = new IntersectionObserver(entries => {
entries.forEach(entry => {
if (entry.intersectionRatio > 0) {
console.log('video in the view');
if (entry.target.querySelector('source').getAttribute('data-src') !== null) {
const source = entry.target.querySelector('source').getAttribute('data-src')
entry.target.setAttribute('src', source);
}
observer.unobserve(entry.target);
} else {
console.log('video out of view');
}
});
});
lazyvideo.forEach(video => {
observer.observe(video);
});
</script>
I have added console.log('video out of view'); & console.log('video in the view'); in order to check the console whether the video is in view or not.
With this script if you want a video to be lazy loaded, just add a class lazy-video to it and you are all set ;)
Full code:
const lazyvideo = document.querySelectorAll('.lazy-video');
observer = new IntersectionObserver(entries => {
entries.forEach(entry => {
if (entry.intersectionRatio > 0) {
console.log('video in the view');
if (entry.target.querySelector('source').getAttribute('data-src') !== null) {
const source = entry.target.querySelector('source').getAttribute('data-src')
entry.target.setAttribute('src', source);
}
observer.unobserve(entry.target);
} else {
console.log('video out of view');
}
});
});
lazyvideo.forEach(video => {
observer.observe(video);
});
#myVideo {
max-width:400px;
width:100%;
}
<video id="myVideo" class="lazy-video" autoplay loop muted playsinline src="">
<source data-src="http://commondatastorage.googleapis.com/gtv-videos-bucket/sample/BigBuckBunny.mp4" type="video/mp4">
</video>
If you want to be sure that lazy load works
Open you Chrome developer tools and go to Network and select the
media tab
While you have the tools open reload the page
If you haven't scroll to the video section then you should not see
the video in your console
While you scroll when you are in the view of the video section then
you must see the video loading on the media tab
See screenshots below:
Not there yet:
In view:
I'm trying to make a random video player in html/js.
It is supposed to play a different video on pageload and as soon as one video is over, it should play another one.
HTML
<video width="320" height="240" autoplay>
<source src="abcdefg.com/example1.mp4" type="video/mp4">
<source src="abcdefg.com/example2.mp4" type="video/mp4">
</video>
JS
<script>
var videos = [
[{type:'mp4', 'src':'abcdefg.com/example1.mp4'}],
[{type:'mp4', 'src':'abcdefg.com/example2.mp4'}],
];
$(function() {
var number = Math.floor(Math.random()*videos.length);
$(this).find('source').each(function(index){
videoSrc = videos[number][index].src;
$(this).attr('src', videoSrc);
$('video').load();
$('video').play();
});
});
</script>
However, my current code plays the same video every page reload and as soon as it's over, nothing happens.
How do I need to optimize my code so it automatically plays a different video on every pageload + when the previous video is over?
Try this,I have added an event listener to video end property and called the newvideo() function ,so that every time the video finishes a new random video is loaded from array.I could'nt find more video urls ,you can test and let me know if it works for you.
$(document).ready(function(){
var videos = [
[{type:'mp4', 'src':'http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4'}],
[{type:'mp4', 'src':'http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4'}],
[{type:'mp4', 'src':'http://clips.vorwaerts-gmbh.de/big_buck_bunny.mp4'}]
];
// selecting random item from array,you can make your own
var randomitem = videos[Math.floor(Math.random()*videos.length)];
// This function adds a new video source (dynamic) in the video html tag
function videoadd(element, src, type) {
var source = document.createElement('source');
source.src = src;
source.type = type;
element.appendChild(source);
}
// this function fires the video for particular video tag
function newvideo(src)
{
var vid = document.getElementById("myVideo");
videoadd(vid,src ,'video/ogg');
vid.autoplay = true;
vid.load();
//vid.play();
}
// function call
newvideo(randomitem[0].src)
// Added an event listener so that everytime the video finishes ,a new video is loaded from array
document.getElementById('myVideo').addEventListener('ended',handler,false);
function handler(e)
{
newvideo(randomitem[0].src)
}
})
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<video width="320" height="240" autoplay id="myVideo">
</video>
I use the following code to check if the user is on desktop or mobile, if on desktop the src="" attribute of the video sources is populated. All fine. After populating the src attribute, I want to check the video has loaded before displaying it. Is there a way to do this?
Thanks!
JS
//video
if($.browser.mobile)
{
console.log("is mobile")
// it is mobile browser
}
else
{
console.log("is desktop")
// no mobile browser
var sources = document.querySelectorAll('video#patient-video source');
// Define the video object this source is contained inside
var video = document.querySelector('video#patient-video');
for(var i = 0; i<sources.length;i++) {
sources[i].setAttribute('src', sources[i].getAttribute('data-src'));
}
// If for some reason we do want to load the video after, for desktop as opposed to mobile (I'd imagine), use videojs API to load
video.load();
video.muted= "muted";
$(".main-area--cris-pro").addClass("loaded")
}
To check if it's a mobile browser, I use the plugin:
detectmobilebrowser.js
My HTML is as follows:
<video id="patient-video" width="100%" preload="none" poster="../../assets/img/patient-home-1600.jpg" autoplay loop>
<source data-src="../../assets/video/patient-home-video-comp.mp4" src="" type="video/mp4">
<source data-src="../../assets/video/patient-home-video-comp.webm" src="" type="video/webm">
<source data-src="../../assets/video/patient-home-video-comp.ogv" src="" type="video/ogg">
</video>
Use canplaythrough event.
The canplaythrough event is fired when the user agent can play the media, and estimates that enough data has been loaded to play the media up to its end without having to stop for further buffering of content.
var sources = document.querySelectorAll('video#patient-video source');
var video = document.querySelector('video#patient-video');
for (var i = 0; i < sources.length; i++) {
sources[i].setAttribute('src', sources[i].getAttribute('data-src'));
}
video.muted = true;//Set boolean value
video.addEventListener('canplaythrough', function() {
alert('Video Loaded!');
video.muted = false;
$(".main-area--cris-pro").addClass("loaded");
});
I saw some examples of defaultPlaybackRate and they say it work on Chrome. So I use their example codes and run on Chrome, it doesn't change the speed to 3.0x when I click the button. Anyone can tell me why?
Here my javascript code,
$(document).ready(function(){
var video = document.getElementById('video');
$("#speed").click(function() { // button function for 3x fast speed
video.defaultPlaybackRate=3.0;
});
});
The HTML codes,
<button id="speed" type="button">3.0x</button>
and
<video id="video" width="930" height="500" controls>
<source src="caption.mp4" type="video/mp4">
<source src="caption.ogg" type="video/ogg" >
<source src="caption.webm" type="video/webm" >
</video>
Because once you change the defaultPlaybackRate you have to load the video again using video.load(); (or set it before the video has loaded). If you want to change the rate while the video plays, use playbackRate instead.
var video = document.getElementById('video');
$("#speed").click(function () { // button function for 3x fast speed
video.defaultPlaybackRate = 3.0;
video.load();
});
or
var video = document.getElementById('video');
$("#speed").click(function () { // button function for 3x fast speed
video.playbackRate = 3.0;
});
jsFiddle example
I have a 5 video's and video player with 5 different buttons.
When I click on any one of the buttons it loads the video, but if I want to watch a different one I have to reload the page and click on one.
How can I fix it so that you can click on any video button at any time and still make the videos work. I think I need to make a mouse down statement, if so how would I go about writing one. Here is my html and JavaScript:
Html
<video id="myVideo" controls autoplay></video>
<div>
Demo Reel
Video1
Video2
Video3
Video4
</div>
JavaScript
var myVid = document.getElementById('myVideo');
var myVidContents1 = "<source src='video/demoreel.mp4' type='video/mp4'/> <source src='video/demoreel.webm' type='video/webm'/> <source src='video/demoreel.ogv' type='video/ogg'/>";
function addVideo1() {
myVid.innerHTML = myVidContents1;
}
var myVidContents2 = "<source src='video/video1.mp4' type='video/mp4'/> <source src='video/video1.webm' type='video/webm'/> <source src='video/video1.ogv' type='video/ogg'/>";
function addVideo2() {
myVid.innerHTML = myVidContents2;
}
var myVidContents3 = "<source src='video/video2.mp4' type='video/mp4'/> <source src='video/video2.webm' type='video/webm'/> <source src='video/video2.ogv' type='video/ogg'/>";
function addVideo3() {
myVid.innerHTML = myVidContents3;
}
var myVidContents4 = "<source src='video/video3.mp4' type='video/mp4'/> <source src='video/video3.webm' type='video/webm'/> <source src='video/video3.ogv' type='video/ogg'/>";
function addVideo4() {
myVid.innerHTML = myVidContents4;
}
var myVidContents5 = "<source src='video/video4.mp4' type='video/mp4'/> <source src='video/video4.webm' type='video/webm'/> <source src='video/video4.ogv' type='video/ogg'/>";
function addVideo5() {
myVid.innerHTML = myVidContents5;
}
Try this:
function addVideo1() {
myVid.innerHTML = myVidContents1;
return false;
//This over-rides the default link behaviour,
// so the browser doesn't scroll to the top of the page instead of firing your code
}
After you create the new source tags, you need to force the video element to load the new sources, like so:
myVid.load();
See:
trying to add a multi source video player with more then one video?
Your click handlers should work just fine, but there may be some strange UX side effects. You're probably better off using a tag other than "a", such as "span" or "button", and then you can set the click handler in javascript:
document.getElementById('link1').addEventListener('click', addVideo1, false);
// etc...
Don't leave off that third "false" argument, otherwise your code will break in older versions of Firefox.