Develop Reference

Count video watch time when close the window

In my project I have to store in database, How many second or minute I have watched. In my model pop-up I am displaying the video. The below code count the second when I PAUSE THE VIDEO, BUT I am interested to count the second when I click on the CROSS button of my model pop-up.
var video = document.getElementById("video");
var timeStarted = -1;
var timePlayed = 0;
var duration = 0;
// If video metadata is laoded get duration
if(video.readyState > 0)
getDuration.call(video);
//If metadata not loaded, use event to get it
else
{
video.addEventListener('loadedmetadata', getDuration);
}
// remember time user started the video
function videoStartedPlaying() {
timeStarted = new Date().getTime()/1000;
}
function videoStoppedPlaying(event) {
// Start time less then zero means stop event was fired vidout start event
if(timeStarted>0) {
var playedFor = new Date().getTime()/1000 - timeStarted;
timeStarted = -1;
// add the new number of seconds played
timePlayed+=playedFor;
}
document.getElementById("played").innerHTML = Math.round(timePlayed)+"";
// Count as complete only if end of video was reached
if(timePlayed>=duration && event.type=="ended") {
document.getElementById("status").className="complete";
}
}
function getDuration() {
duration = video.duration;
document.getElementById("duration").appendChild(new Text(Math.round(duration)+""));
console.log("Duration: ", duration);
}
video.addEventListener("play", videoStartedPlaying);
video.addEventListener("playing", videoStartedPlaying);
video.addEventListener("ended", videoStoppedPlaying);
video.addEventListener("pause", videoStoppedPlaying);
<div id="videoModal" class="modal fade">
<div class="modal-header">
<button type="button" onclick="PlayVideoCount();" class="close" data-dismiss="modal">×</button>
</div>
<div class="modal-body">
<video id="vid" autoplay="" controls="" width="100%" height="100%"></video>
</div>
<div>
I want to count the second when PlayVideoCount(); function called.

I don't know how your HTML code is but I made a small code maybe you will get the point. If not then comment down, and I will help you out. DEMO
HTML
<video width="400" controls>
<source src="https://www.w3schools.com/html/mov_bbb.mp4" type="video/mp4">
<source src="https://www.w3schools.com/html/mov_bbb.ogg" type="video/ogg">
Your browser does not support HTML video.
</video>
<button onclick="playVid()">Play</button>
<button onclick="pauseVid()">Pause</button>
JavaScript
const video = document.querySelector('video');
video.addEventListener('loadeddata', (event) => {
console.log('Total Time ', event.srcElement.duration);
});
video.onpause = (event) => {
console.log('Paused at ', event.srcElement.currentTime);
};
function playVid() {
video.play();
}
function pauseVid() {
video.pause();
}

Multiple HTML5 videos audio captions not working correctly

I am adding multiple HTML5 videos onto a webpage.
The code I am replicating is from this recommended accessible approach. http://jspro.brothercake.com/audio-descriptions/ The video plays fine, and audio captions work, but when I add a new video to the same page the second video does not play the audio captions at all. Does anyone have suggestions on how I can fix this issue?
<video id="video" preload="auto" controls="controls"
width="640" height="360" poster="./media/HorribleHistories.jpg">
<source src="./media/HorribleHistories.mp4" type="video/mp4" />
<source src="./media/HorribleHistories.webm" type="video/webm" />
</video>
<audio id="audio" preload="auto">
<source src="./media/HorribleHistories.mp3" type="audio/mp3" />
<source src="./media/HorribleHistories.ogg" type="audio/ogg" />
</audio>
<script type="text/javascript">
(function()
{
//get references to the video and audio elements
var video = document.getElementById('video');
var audio = document.getElementById('audio');
//if media controllers are supported,
//create a controller instance for the video and audio
if(typeof(window.MediaController) === 'function')
{
var controller = new MediaController();
audio.controller = controller;
video.controller = controller;
}
//else create a null controller reference for comparison
else
{
controller = null;
}
//reduce the video volume slightly to emphasise the audio
audio.volume = 1;
video.volume = 0.8;
//when the video plays
video.addEventListener('play', function()
{
//if we have audio but no controller
//and the audio is paused, play that too
if(!controller && audio.paused)
{
audio.play();
}
}, false);
//when the video pauses
video.addEventListener('pause', function()
{
//if we have audio but no controller
//and the audio isn't paused, pause that too
if(!controller && !audio.paused)
{
audio.pause();
}
}, false);
//when the video ends
video.addEventListener('ended', function()
{
//if we have a controller, pause that
if(controller)
{
controller.pause();
}
//otherwise pause the video and audio separately
else
{
video.pause();
audio.pause();
}
}, false);
//when the video time is updated
video.addEventListener('timeupdate', function()
{
//if we have audio but no controller,
//and the audio has sufficiently loaded
if(!controller && audio.readyState >= 4)
{
//if the audio and video times are different,
//update the audio time to keep it in sync
if(Math.ceil(audio.currentTime) != Math.ceil(video.currentTime))
{
audio.currentTime = video.currentTime;
}
}
}, false);
})();
</script>

So your problem is to do with how you are grabbing the elements in the first place.
var video = document.getElementById('video');
var audio = document.getElementById('audio');
What you are doing is grabbing a single item on the page with the ID of "video" (same for "audio").
IDs have to be unique, so what you want to do is use classes instead.
<video class="video" preload="auto" controls="controls"
width="640" height="360" poster="./media/HorribleHistories.jpg">
See I changed the ID to a class.
Now any element with the class "video" can be used in our code.
However we do need to modify our code a bit as now we have multiple items to bind to.
please note the below is to give you an idea of how you loop items etc. You would need to rewrite your code to move each of the steps into functions etc. as your original code is not designed to work with multiple items
(function()
{
//get references to every single video and audio element
var videos = document.querySelectorAll('.video');
var audios = document.querySelectorAll('.audio');
// loop through all videos adding logic etc.
for(x = 0; x < videos.length; x++){
// grab a single video from our list to make our code neater
var video = videos[x];
if(typeof(window.MediaController) === 'function')
{
var controller = new MediaController();
video.controller = controller;
} else {
controller = null;
}
video.volume = 0.8;
//...etc.
}
})();
Quick Tip:
I would wrap your <video> and <audio> elements that are related in a <div> with a class (e.g. class="video-audio-wrapper").
This way you can change your CSS selector to something like:
var videoContainers = document.querySelectorAll('.video-audio-wrapper');
Then loop through them instead and check if they have a video and / or audio element
for(x = 0; x < videoContainers.length; x++){
var thisVideoContainer = videoContainers[x];
//query this container only - we can use `querySelector` as there should only be one video per container and that returns a single item / the first item it finds.
var video = thisVideoContainer.querySelector('video');
var audio = thisVideoContainer.querySelector('audio');
//now we can check if an element exists
if(video.length == 1){
//apply video logic
}
if(audio.length == 1){
//apply audio logic
}
// alternatively we can check both exist if we have to have both
if(video.length != 1 || audio.length != 1){
// we either have one or both missing.
// apply any logic for when a video / audio element is missing
//using "return" we can exit the function early, meaning all code after this point is not run.
return false;
}
///The beauty of this approach is you could then just use your original code!
}
Doing it this way you could recycle most of your code.

Thank you for your suggestions in changing the ID's into classes and adding the video wrapper <div> to the video container. That all makes sense in grouping each video on 1 page. I updated the the following code, but the audio captions won't play at all. The video plays and pauses fine, and the volume works. I am also not getting any syntax errors in the browser console. Here's what I got for my HTML and JS. I appreciate your help/feedback.
<div class="video-container-wrapper">
<div class="video-container">
<video class="video" preload="auto" controls="controls" width="640" height="360" poster="img/red-zone-thumb.png">
<source src="https://player.vimeo.com/external/395077086.hd.mp4?s=1514637c1ac308a950fafc00ad46c0a113c6e8be&profile_id=175" type="video/mp4">
<track kind="captions" label="English captions" src="captions/redzone-script.vtt" srclang="en" default="">
</video>
<audio class="audio" preload="auto">
<source src="captions/redzone-message.mp3" type="audio/mp3">
</audio>
</div>
</div>
Javascript:
var videoContainers = document.querySelectorAll('.video-container-wrapper');
for (x = 0; x < videoContainers.length; x++) {
var thisVideoContainer = videoContainers[x];
//query this container only - we can use `querySelector` as there should only be one video per container and that returns a single item / the first item it finds.
var video = thisVideoContainer.querySelector('video');
var audio = thisVideoContainer.querySelector('audio');
//now we can check if an element exists
if (video.length == 1) {
//apply video logic
//reduce the video volume slightly to emphasise the audio
video.volume = 0.8;
//when the video ends
video.addEventListener('ended', function () {
video.pause();
}, false);
}
if (audio.length == 1) {
//apply audio logic
audio.volume = 1;
//when the video plays
video.addEventListener('play', function () {
if (audio.paused) {
audio.play();
}
}, false);
// when the video ends
video.addEventListener('ended', function () {
audio.pause();
}, false);
//when the video time is updated
video.addEventListener('timeupdate', function () {
if (audio.readyState >= 4) {
//if the audio and video times are different,
//update the audio time to keep it in sync
if (Math.ceil(audio.currentTime) != Math.ceil(video.currentTime)) {
audio.currentTime = video.currentTime;
}
}
}, false);
}
}

Can I create a breakable loop with currentTime of JavaScript?

I'm trying to create a loop of a video and when I click some button break that loop to finish the video
function stopIt() {
document.getElementById('stopIt').classList.add('stop');
}
function loopy() {
var vid = document.getElementById('front-video');
if (vid.currentTime > 1) {
vid.currentTime = 0;
if (document.getElementById('stopIt').classList.contains('stop')) {
break;
}
}
}
<video class="d-none d-lg-block" id="front-video" autoplay onTimeUpdate="loopy()">
<source src="video/front-video.mp4" type="video/mp4">
</video>
<div class="col-12 front-box py-3 pl-4" id="stopIt" onClick="stopIt()"></div>
I have a box with the id stopIt, but actually the video doesn't return to the start, It does it when I erase the second if.
Any ideas, thanks!

I'm not sure if I understand you correctly, but I think you want to do this:
function loopy() {
if (!document.getElementById('stopIt').classList.contains('stop')) {
var vid = document.getElementById('front-video');
if (vid.currentTime > 1) vid.currentTime = 0;
}
}

If the requirement is to loop from a specific begin time in media playback to a specific end time in media playback you can set the initial src of the HTMLMediaElement to the URL followed by a media fragment identifier.
The media element will pause at the end time of the media fragment identifier. You can use pause event, which is dispatched when a media element reaches the end time of a media fragment identifier, where .load() then .play() can be called to loop the media playback.
At click on button element, remove pause event handler from button element, store the .currentTime in a variable, remove the media fragment identifier from the src of the media element, call .load() on media element, set .currentTime to the stored .currentTime and then call .play().
const video = document.querySelector('video');
const button = document.querySelector('button');
let [from, to] = [0, 1];
let loop = true;
let currentTime = 0;
const src = "http://mirrors.creativecommons.org/movingimages/webm/ScienceCommonsJesseDylan_240p.webm";
const handlePause = e => {
if (loop) {
video.load();
video.play();
}
}
const stopLoop = e => {
if (loop) {
loop = !loop;
video.removeEventListener('pause', handlePause);
currentTime = video.currentTime;
video.src = video.src.replace(/#.+$/, '');
video.load();
video.currentTime = currentTime;
video.play();
}
}
button.addEventListener('click', stopLoop)
video.addEventListener('pause', handlePause);
video.src = `${src}#t=${from},${to}`
<button>stop loop</button>
<video src="" muted="false" controls autoplay>

HTML5 Video - pause for a few seconds then continue playback

I have a HTML5 video element in my page and what I'd like to happen is when it reaches the 3 second mark, it needs to pause for 2 seconds and then continue playback.
The video length is about 8 seconds.
<video id="video" playsinline autoplay muted loop>
<source src="video.mp4" type="video/mp4"/>
<source src="video.webm" type="video/webm"/>
</video>

This does it
const video = document.getElementById('myVideo');
function playVid() {
video.play();
window.setTimeout(pauseVid, 3000);
}
function play() {
video.play();
}
function pauseVid() {
video.pause();
window.setTimeout(play, 5000);
}

setTimeout() .currentTime & timeupdate
Go to the link above to understand why setTimeout() ain't so great.
.currentTime Property
This property is used by <audio> and <video> tags to get/set playback time in seconds. In the following demo it is used to get the time:
var t = this.currentTime;
timeupdate Event
This event fires 4 times a second while an <audio> or <video> tag is playing. In the demo both a <video> and <audio> tag are registered to to the timeupdate event:
video.addEventListener("timeupdate", tick);
timer.addEventListener("timeupdate", tock);
Setup
[controls] Attribute
Added so the time can be reviewed as the demo runs, it's optional and recommended that it not be used in production.
<audio> Tag
An <audio> tag has been added as a timer, The attributes [muted] and [autoplay] are required:
<audio id='timer' src='https://od.lk/s/NzlfOTEwMzM5OV8/righteous.mp3' muted controls autoplay></audio>
Both tags will start playing and are listening to the timeupdate event and will call a function at a predetermined time:
function tick(e) {
var t = this.currentTime;
if (t >= 3) {
this.pause();
video.removeEventListener("timeupdate", tick);
}
}
function tock(e) {
var t = this.currentTime;
if (t >= 5) {
video.play();
timer.removeEventListener("timeupdate", tock);
}
}
Basically when the <video> and <audio> tags are triggered every 250ms, they are calling those functions:
<video> calls function tick()
if the playback time is 3 or more seconds it pauses.
to avoid constant triggering every 250ms, the eventListener is removed.
<audio> calls function tock()
if the playback time is 5 or more seconds it will play the <video>.
for the same reason as the <video>, the eventListener is removed.
Demo
var video = document.getElementById('video');
var timer = document.getElementById('timer');
video.addEventListener("timeupdate", tick);
timer.addEventListener("timeupdate", tock);
function tick(e) {
var t = this.currentTime;
if (t >= 3) {
this.pause();
video.removeEventListener("timeupdate", tick);
}
}
function tock(e) {
var t = this.currentTime;
if (t >= 5) {
video.play();
timer.removeEventListener("timeupdate", tock);
}
}
<video id="video" playsinline muted loop controls autoplay width='300'>
<source src="https://html5demos.com/assets/dizzy.mp4" type="video/mp4"/>
</video>
<audio id='timer' src='https://od.lk/s/NzlfOTEwMzM5OV8/righteous.mp3' muted controls autoplay></audio>

How to draw video to canvas from video tag ? (Chrome issue)

I need to display a video to canvas from video using the Createjs Ticker to navigate to the video timeline. I use the currentFrame/FPS to get readable time for my video tag. In Safari it's working fine but in chrome, video is lagging and my canvas is not updated. Ticker is set to 25 FPS.
Here is my HTML :
<video id="video" autoplay controls preload="auto" muted width="1280" height="720">
<source src="video.mp4" type="video/mp4" >
</video>
Here is my JS :
var video;
var first = true;
var first_2 = true
document.addEventListener('DOMContentLoaded',initVideo,false);
function initVideo() {
video = document.getElementById("video");
video.addEventListener('canplaythrough', function() {
if(first){
first = false;
init(); // Create Ticker
}
},false);
video.addEventListener('play', function() {
if(first_2){
first_2 = false;
video.pause();
}
});
}
function copyVideoToCanvas() {
video.currentTime = currentFrame/25;
exportRoot.videoBase.removeAllChildren();
var btmp = new createjs.Bitmap(video);
exportRoot.videoBase.addChild(btmp);
}
I modify the Animate cc code :
this.frame_0 = function() {
root = this;
root.addEventListener("tick", tick);
function tick(evt){
copyVideoToCanvas(time(root.currentFrame));
}
function time(t) {
return t/25;
}
}
Any ideas ?