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
Related
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/
I use video tag of html5 by separate audio from video like this code.
<video id="myvideo" controls >
<source src="output.webm" type="video/webm">
<audio id="myaudio" controls="">
<source src="audio1.ogg" type="audio/ogg"/>
</audio>
</video>
<script>
var myvideo = document.getElementById("myvideo");
var myaudio = document.getElementById("myaudio");
var change_time_state = true;
myvideo.onplay = function(){
myaudio.play();
if(change_time_state){
myaudio.currentTime = myvideo.currentTime;
change_time_state = false;
}
}
myvideo.onpause = function(){
myaudio.pause();
change_time_state = true;
}
</script>
It can play video and audio but it cannot change audio volume. Can I fix it to change volume ?
Use the MP4 video and check your source URL.
You might be searching the DOM volume Property, check it in w3school
In your case the solution is:
myaudio.volume = anynumber;
Must be a number between 0.0 and 1.0.
Example values:
1.0 is highest volume (100%. This is default)
0.5 is half volume (50%)
0.0 is silent (same as mute)
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;
$(".main-area--cris-pro").addClass("loaded");
});
I have a problem to get out the duration of an mp4 video file when the html document is ready. My code:
(function ($, root, undefined) {
$(function () {
'use strict';
$(document).ready(function() {
var duration = $("section:first-child() video").get(0).duration;
alert(duration);
});
});
});
The script works in firefox but in chrome it returns an NaN. Im not a javascript professional and i use wordpress HTML5 Blank theme.
Thanks for your help and best regards.
You need to preload the video metadata for you to be able to access them. Then, within the loadedmetadata event, you may access the duration as below.
$(function() {
var $video = $('#video_container').find('video');
$video.on("loadedmetadata", function() {
$('#duration').text($video[0].duration);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="video_container">
<video poster="http://media.w3.org/2010/05/sintel/poster.png" preload="metadata" controls="" width="400">
<source type="video/mp4" src="http://media.w3.org/2010/05/sintel/trailer.mp4" id="mp4"></source>
<source type="video/webm" src="http://media.w3.org/2010/05/sintel/trailer.webm" id="webm"></source>
<source type="video/ogg" src="http://media.w3.org/2010/05/sintel/trailer.ogv" id="ogv"></source>
<p>Your user agent does not support the HTML5 Video element.</p>
</video>
</div>
<div>Total duration : <span id="duration"></span></div>
you need a listener to get the duration of a video
var videoTime = 0;
var currentvideo = document.getElementById('video');
currentvideo.addEventListener('play', function() {
videoTime= currentvideo.duration;
console.info(videoTime) // get the duration
});
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.