playing event in html5 video TAG - javascript

I have tried like this
document.getElementById('myVID').onplaying = alert("Playback started");
But, the alert is not coming. I have tested it in chrome. Is there any issue in this code?. Otherwise this event is not supported.

Working JSFiddle: http://jsfiddle.net/E7FhU/
I would say change your code to be like this because as #Passerby said, alert returns undefined and you need to assign a function. Additionally, this can be accomplished with simple javascript.
<script>
var video = document.getElementById('myVID');
video.onplaying = function(e) {
/*Do things here!*/
alert("hello video");
}
</script>
When you click play the alert is displayed.
References:
Detect when an HTML5 video finishes

Related

Please help me to use play/stop code so my code should stop and reset not pause [duplicate]

I am playing a small audio clip on click of each link in my navigation
HTML Code:
<audio tabindex="0" id="beep-one" controls preload="auto" >
<source src="audio/Output 1-2.mp3">
<source src="audio/Output 1-2.ogg">
</audio>
JS code:
$('#links a').click(function(e) {
e.preventDefault();
var beepOne = $("#beep-one")[0];
beepOne.play();
});
It's working fine so far.
Issue is when a sound clip is already running and i click on any link nothing happens.
I tried to stop the already playing sound on click of link, but there is no direct event for that in HTML5's Audio API
I tried following code but it's not working
$.each($('audio'), function () {
$(this).stop();
});
Any suggestions please?
Instead of stop() you could try with:
sound.pause();
sound.currentTime = 0;
This should have the desired effect.
first you have to set an id for your audio element
in your js :
var ply = document.getElementById('player');
var oldSrc = ply.src;// just to remember the old source
ply.src = "";// to stop the player you have to replace the source with nothing
I was having same issue. A stop should stop the stream and onplay go to live if it is a radio. All solutions I saw had a disadvantage:
player.currentTime = 0 keeps downloading the stream.
player.src = '' raise error event
My solution:
var player = document.getElementById('radio');
player.pause();
player.src = player.src;
And the HTML
<audio src="http://radio-stream" id="radio" class="hidden" preload="none"></audio>
Here is my way of doing stop() method:
Somewhere in code:
audioCh1: document.createElement("audio");
and then in stop():
this.audioCh1.pause()
this.audioCh1.src = 'data:audio/wav;base64,UklGRiQAAABXQVZFZm10IBAAAAABAAEAVFYAAFRWAAABAAgAZGF0YQAAAAA=';
In this way we don`t produce additional request, the old one is cancelled and our audio element is in clean state (tested in Chrome and FF) :>
This method works:
audio.pause();
audio.currentTime = 0;
But if you don't want to have to write these two lines of code every time you stop an audio you could do one of two things. The second I think is the more appropriate one and I'm not sure why the "gods of javascript standards" have not made this standard.
First method: create a function and pass the audio
function stopAudio(audio) {
audio.pause();
audio.currentTime = 0;
}
//then using it:
stopAudio(audio);
Second method (favoured): extend the Audio class:
Audio.prototype.stop = function() {
this.pause();
this.currentTime = 0;
};
I have this in a javascript file I called "AudioPlus.js" which I include in my html before any script that will be dealing with audio.
Then you can call the stop function on audio objects:
audio.stop();
FINALLY CHROME ISSUE WITH "canplaythrough":
I have not tested this in all browsers but this is a problem I came across in Chrome. If you try to set currentTime on an audio that has a "canplaythrough" event listener attached to it then you will trigger that event again which can lead to undesirable results.
So the solution, similar to all cases when you have attached an event listener that you really want to make sure it is not triggered again, is to remove the event listener after the first call. Something like this:
//note using jquery to attach the event. You can use plain javascript as well of course.
$(audio).on("canplaythrough", function() {
$(this).off("canplaythrough");
// rest of the code ...
});
BONUS:
Note that you can add even more custom methods to the Audio class (or any native javascript class for that matter).
For example if you wanted a "restart" method that restarted the audio it could look something like:
Audio.prototype.restart= function() {
this.pause();
this.currentTime = 0;
this.play();
};
It doesn't work sometimes in chrome,
sound.pause();
sound.currentTime = 0;
just change like that,
sound.currentTime = 0;
sound.pause();
From my own javascript function to toggle Play/Pause - since I'm handling a radio stream, I wanted it to clear the buffer so that the listener does not end up coming out of sync with the radio station.
function playStream() {
var player = document.getElementById('player');
(player.paused == true) ? toggle(0) : toggle(1);
}
function toggle(state) {
var player = document.getElementById('player');
var link = document.getElementById('radio-link');
var src = "http://192.81.248.91:8159/;";
switch(state) {
case 0:
player.src = src;
player.load();
player.play();
link.innerHTML = 'Pause';
player_state = 1;
break;
case 1:
player.pause();
player.currentTime = 0;
player.src = '';
link.innerHTML = 'Play';
player_state = 0;
break;
}
}
Turns out, just clearing the currentTime doesn't cut it under Chrome, needed to clear the source too and load it back in. Hope this helps.
As a side note and because I was recently using the stop method provided in the accepted answer, according to this link:
https://developer.mozilla.org/en-US/docs/Web/Guide/Events/Media_events
by setting currentTime manually one may fire the 'canplaythrough' event on the audio element. In the link it mentions Firefox, but I encountered this event firing after setting currentTime manually on Chrome. So if you have behavior attached to this event you might end up in an audio loop.
shamangeorge wrote:
by setting currentTime manually one may fire the 'canplaythrough' event on the audio element.
This is indeed what will happen, and pausing will also trigger the pause event, both of which make this technique unsuitable for use as a "stop" method. Moreover, setting the src as suggested by zaki will make the player try to load the current page's URL as a media file (and fail) if autoplay is enabled - setting src to null is not allowed; it will always be treated as a URL. Short of destroying the player object there seems to be no good way of providing a "stop" method, so I would suggest just dropping the dedicated stop button and providing pause and skip back buttons instead - a stop button wouldn't really add any functionality.
This approach is "brute force", but it works assuming using jQuery is "allowed". Surround your "player" <audio></audio> tags with a div (here with an id of "plHolder").
<div id="plHolder">
<audio controls id="player">
...
</audio>
<div>
Then this javascript should work:
function stopAudio() {
var savePlayer = $('#plHolder').html(); // Save player code
$('#player').remove(); // Remove player from DOM
$('#FlHolder').html(savePlayer); // Restore it
}
I was looking for something similar due to making an application that could be used to layer sounds with each other for focus. What I ended up doing was - when selecting a sound, create the audio element with Javascript:
const audio = document.createElement('audio') as HTMLAudioElement;
audio.src = getSoundURL(clickedTrackId);
audio.id = `${clickedTrackId}-audio`;
console.log(audio.id);
audio.volume = 20/100;
audio.load();
audio.play();
Then, append child to document to actually surface the audio element
document.body.appendChild(audio);
Finally, when unselecting audio, you can stop and remove the audio element altogether - this will also stop streaming.
const audio = document.getElementById(`${clickedTrackId}-audio`) as HTMLAudioElement;
audio.pause();
audio.remove();
If you have several audio players on your site and you like to pause all of them:
$('audio').each( function() {
$(this)[0].pause();
});
I believe it would be good to check if the audio is playing state and reset the currentTime property.
if (sound.currentTime !== 0 && (sound.currentTime > 0 && sound.currentTime < sound.duration) {
sound.currentTime = 0;
}
sound.play();
for me that code working fine. (IE10+)
var Wmp = document.getElementById("MediaPlayer");
Wmp.controls.stop();
<object classid="clsid:6BF52A52-394A-11D3-B153-00C04F79FAA6"
standby="Loading áudio..." style="width: 100%; height: 170px" id="MediaPlayer">...
Hope this help.
What I like to do is completely remove the control using Angular2 then it's reloaded when the next song has an audio path:
<audio id="audioplayer" *ngIf="song?.audio_path">
Then when I want to unload it in code I do this:
this.song = Object.assign({},this.song,{audio_path: null});
When the next song is assigned, the control gets completely recreated from scratch:
this.song = this.songOnDeck;
The simple way to get around this error is to catch the error.
audioElement.play() returns a promise, so the following code with a .catch() should suffice manage this issue:
function playSound(sound) {
sfx.pause();
sfx.currentTime = 0;
sfx.src = sound;
sfx.play().catch(e => e);
}
Note: You may want to replace the arrow function with an anonymous function for backward compatibility.
In IE 11 I used combined variant:
player.currentTime = 0;
player.pause();
player.currentTime = 0;
Only 2 times repeat prevents IE from continuing loading media stream after pause() and flooding a disk by that.
What's wrong with simply this?
audio.load()
As stated by the spec and on MDN, respectively:
Playback of any previously playing media resource for this element stops.
Calling load() aborts all ongoing operations involving this media element

Checking for end of video on iPad

I can't seem to listen for onended on a video on iPad(Safari)...I want to remove a class that I was able to add when the play button was pressed, but I can't seem to track down when the video ends (works well every where else including iphone, just need it for iPad/Safari)
link here: http://www.artandseek.net/meyerson/tour/
code snippet here
$(".playBtn").click(function(){
var thisVideo = $(this).prevAll(".img-wrap").children(".togglePlay").get(0);
thisVideo.onended = function(e) {
$(this).fadeOut().parent(".img-wrap").removeClass("playing");
$(this).parent().next("h2").fadeIn();
classie.remove( thisVideo, 'tabletActive');
}; ...
I was able to find the answer here:
Bind Play/Pause/Ended functions to HTML5 video using jQuery
using this:$(thisVideo).bind('ended', function () {
console.log('working');
});

Listen for when an HTML5 Audio element stops playing

I need to call a function when an HTML5 audio element stops playing. Specifically the function will reset the seek bar and change the pause icon to a play icon.
Here's my JavaScript:
var audio = document.getElementById('audio');
audio.addEventListener('ended', stopAudio);
function stopAudio() {
audio.stop();
$('.play-pause .play').show();
$('.play-pause .pause').hide();
}
.. only the code inside is not executing once called. The audio is playing successfully and ending successfully, it's just not calling my function. What am I missing?
It is because you are using getElementById and passing audio when I think you mean to use getElementsByTagName, either that or you have the wrong id for the audio element.
I needed:
audio.stop;
Instead of...
audio.stop();
Which fixed it :)
The HTML Audio Element has no method stop(). The reason your event handler isn't "working" is because the line audio.stop(); throws an error and nothing below it will execute.
Your code should look like below in order to detect if your audio has ended. There is no way to detect if it has been stopped but you can detect if it has ended or been paused. If you are looking for the code for when it's paused you replace the "ended" with "pause"
document.getElementById('audio').addEventListener("ended",function() {
$('.play-pause .play').show();
$('.play-pause .pause').hide();
}

Mediaelement.js wont play with Flash-fallback

I'm using Mediaelement.js to play some video and using javascript to get autoplay working. It works perfectly in Chrome, and IE10, but when it comes to Firefox and IE8 I have a problem with the flash fallback. The following works in Chrome:
jQuery('video,audio').mediaelementplayer();
if(autoPlay == "true") {
player = new MediaElementPlayer("#"+currentPage+" video,audio");
player.play();
}
IE8 returns the following:
And firefox returns no errors, but if I add an alert(alert("hallo");) in front of player.play(), it plays when I dismiss the alert-box.
I can't add fiddle, because of heavy use of XML.
The player isn't loaded up and ready to play when the script presses the play button.
The script needs to press the play button inside the success function in the mediaelement instance creation.
See here: How do I get mediaelement.js player state (paused, volume, etc.)?
Some browsers (webkit specifically) may trigger the play() method before the video is completely ready and the video may just hang while loading.
I would advice to add an event listener to detect when the video can actually play before triggering the play() method like :
success : function (media, domObject) {
media.addEventListener('canplay', function () {
media.play();
}, false);
} // success
Yeah sorry, solved it a half year later:
As mentioned, the play event must be invoked in the success function
jQuery("video,audio").mediaelementplayer();
if(autoPlay == "1") {
media = jQuery("#"+currentPage+" video,audio")[0];
new MediaElement(media, {success: function(media) {
media.play();
}});
}

jQuery - FadeToggle - different actions if element is visible or not

I have a button, when you click on that button, I'm doing a fadeToggle() to show or hide a popup.
That popup is appearing on top of a flash video that autoplays.
So, what I want to do, is when the popup is visible, I want to pause the video. When it's hidden, play the video.
My video player already support those function. So this is working fine:
videoPlayer.pause();
videoPlayer.play()
So what my FadeToggle() would looks like ? Right now I have this code:
$("#categorySlider").fadeToggle('fast', function() {
var videoPlayer = document.getElementById("videoContainer");
videoPlayer.pause();
});
I'm missing the play() part here, but I cant figure out the syntax to add it?! If fadeToggle is not the right thing to use, any jquery or javascript is fine!
Any helps please?
You could use the jquery :visible selector to find out if #categorySlider is visible or not and depending on that pause or play the video.
$("#categorySlider").fadeToggle('fast', function() {
var videoPlayer = document.getElementById("videoContainer");
if ($("#categorySlider").is(":visible"))
videoPlayer.pause();
else
videoPlayer.play();
});

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