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Is it possible to embed actions in html5 video?

Is there any way to play a video in html5, stop and execute javascript at known points within the video?

Yes, try this. You have to use the currentTime property. Start with that and start your javascript functions from there. Is that what you're looking for?
var vid = document.getElementById("video");
//Add a timeupdate listener
video.addEventListener("timeupdate", function(){
//Check for video properties from within the function
if (this.currentTime == 5)
this.pause();
//cal javascript
}
}

Looking at the accepted answer over here it looks like it is possible.
To pause the video you just do this:
var mediaElement = document.getElementById("video"); // create a reference to your HTML5 video
mediaElement.pause(); // pauses the video
If you want to play the video, do this:
mediaElement.play(); // plays the video
To get the current time in the video, do this:
mediaElement.currentTime; // gets the current time
Here's an example linking them all up:
var mediaElement = document.getElementById("video");
if(mediaElement.currentTime == 35){
mediaElement.pause();
// do whatever else you would like
mediaElement.play();
}
The MDL documentation is here, there are plenty of other properties you might find helpful.
Hope this helps!

Yes, by doing like this you can.
Note that you have to look for a time using bigger than > bigger than (as the chance to match an exact millisecond is almost zero), and have a variable in one way or the other to know which ones is done.
window.addEventListener('load', function() {
var cur = document.querySelector('#cur'),
vid = document.querySelector('#vid')
})
var appDone = {"done7":false,"done4":false}
vid.addEventListener('timeupdate', function(e) {
if (e.target.currentTime > 7 && !appDone.done7) {
appDone.done7 = true;
e.target.pause();
//do something
cur.textContent += ", " + "done7 once";
e.target.play();
}
if (e.target.currentTime > 4 && !appDone.done4) {
appDone.done4 = true;
e.target.pause();
//do something
cur.textContent += ", " + "done4 once";
e.target.play();
}
})
<video id="vid" width="320" height="176" controls>
<source src="http://www.w3schools.com/tags/mov_bbb.mp4" type="video/mp4">
<source src="http://www.w3schools.com/tags/mov_bbb.ogg" type="video/ogg">
Your browser does not support HTML5 video.
</video>
<p id="cur"></p>

Stepping through a video file with reveal.js

Problem and question
In a reveal.js presentation, I want to include a long video file. I want to have the playblack stop at certain positions, so that I have time to explain to the audience what they’re seeing. Then, I want to have the playback continue when I click. How can I do this?
Unsuccessful attempts so far
My attempts are as follows. I split the video file into parts 1.webm, 2.webm, 3.webm and so on, such that each part ends where I want to have a break. My idea then is to
Override the keydown event of Reveal.js so that it doesn’t go to the next slide, but instead executes my Javascript. How can I do something like this?
<div class="slides">
<section class="video-stepper">
<video>
<source data-src="1.webm" type="video/webm" />
</video>
</section>
</div>
<script>
$(function() {
// How can I do this?
Reveal.addEventListener('click', function(event) {
if ($(event.currentSlide).hasClass('video-stepper')) {
event.preventDefault();
// change 'src' of the video element and start the playback.
}
});
});
</script>
Use fragments and autoplay the video when it is shown:
<div class="slides">
<section class="video-stepper">
<video class="fragment current-visible video-step">
<source data-src="1.webm" type="video/webm" />
</video>
<video class="fragment current-visible video-step">
<source data-src="2.webm" type="video/webm" />
</video>
<video class="fragment current-visible video-step">
<source data-src="3.webm" type="video/webm" />
</video>
</section>
</div>
<script>
$(function() {
Reveal.addEventListener('fragmentshown', function(event) {
if ($(event.fragment).hasClass('video-step')) {
event.fragment.play();
}
});
});
</script>
And some CSS taken from the question Hide reveal.js fragments after their appearance, so that the fragments stack on top of each other:
.fragment.current-visible.visible:not(.current-fragment) {
display: none;
height:0px;
line-height: 0px;
font-size: 0px;
}
However, this comes with some fading in and out, which looks bad. How can I avoid the fading?

When entering the video slide, you can basically disable reveal.js by calling Reveal.disableEventListeners(), then bind your own logic to the keydown event until you’ve stepped through all videos, before enabling reveal.js again with Reveal.addEventListeners().
Some additional effort is required to avoid flickering when transitioning to the next video. You can add a new <video> element with the new video, place it on top of the current <video> with the help of CSS z-index, play the new video, then remove the old.
HTML
<section class="video-stepper">
<!-- Unlike the other <video> element, this one is not absolutely
positioned. We hide it with CSS, but use it to reserve space
on the slide and compute the optimal width and height. -->
<video class="placeholder stretch">
<source src="1.webm">
</video>
<video class="video-step" data-sources='["1.webm","2.webm","3.webm"]'></video>
</section>
CSS
.video-stepper {
position: relative;
}
video.video-step {
position: absolute;
top: 0;
left: 0;
}
video.video-step.front {
z-index: 10;
}
video.placeholder {
visibility: hidden;
}
Javascript
This is a bit lengthy, but works as desired.
Reveal.addEventListener('slidechanged', function(event) {
if ($(event.currentSlide).hasClass('video-stepper')) {
// When we enter a slide with a step-by-step video, we stop reveal.js
// from doing anything. Below, we define our own keystroke handler.
Reveal.removeEventListeners();
// Set the width and height of the video so that it fills the slide.
var stretcher = $(event.currentSlide).find('video.placeholder').get(0);
var video = $(event.currentSlide).find('video.video-step').get(0);
video.setAttribute('width', stretcher.getAttribute('width'));
video.setAttribute('height', stretcher.getAttribute('height'));
// Convert the data-sources attribute to an array of strings. We will
// iterate through the array with current_video_index.
var sources = JSON.parse(video.getAttribute('data-sources'));
var current_video_index = 0;
// Add a <source> element to the video and set the 'src' to
// the first video.
var source = document.createElement('source');
source.setAttribute('src', sources[0]);
video.appendChild(source);
document.addEventListener('keydown', function step_through_videos(event) {
if (event.which == 39) {
// right arrow key: show next video
// For the next video, create a new <video> element
// and place it on top of the old <video> element.
// Then load and play the new. This avoids flickering.
var new_video = $(video).clone().get(0);
var new_video_source = $(new_video).children('source').get(0);
new_video_source.src = sources[current_video_index];
new_video.load();
$(new_video).addClass('front video-step');
$(new_video).insertAfter(video);
new_video.play();
// Wait a little before removing the old video.
new Promise((resolve) => setTimeout(resolve, 500)).then(function() {
video.remove();
video = new_video;
$(video).removeClass('front');
});
current_video_index = current_video_index + 1;
event.preventDefault();
} else if (event.which == 37) {
// left arrow key: return the counter to previous video
current_video_index = current_video_index - 1;
event.preventDefault();
}
if (0 > current_video_index || current_video_index >= sources.length) {
// Reinstall reveal.js handlers.
document.removeEventListener('keydown', step_through_videos, true);
Reveal.addEventListeners();
console.log('Added reveal.js event listeners.');
}
}, true);
}
});

Dynamically loaded video source is aborted in IE

I have a script that loads the sources for a video that works great in Chrome, FF and Safari. In IE however, the source is "Aborted" in the networks tab. Here is my code:
<div id="video_wrapper">
<video muted controls="false" autoplay poster="/videos/home.jpg" preload="none" loop id="bg_video">
<img src="/videos/home.jpg" alt="Your browser does not support HTML5 video.">
</video>
documentObj.on('ready', function() {
insertVideo();
});
function insertVideo() {
if (windowObj.width() > 767) {
setTimeout(function() {
var video = $("video")[0];
insertSource("/videos/home.webm", 'video/webm');
insertSource("/videos/home.mp4", "video/mp4");
video.play();
}, 50);
} else {
$("video").remove();
}
}
function insertSource(src, type) {
var source = document.createElement('source');
source.src = src;
source.type = type;
$("#bg_video").prepend(source);
}
Anyone have any advice on this? I can't seem to figure this mess out.
Thanks everyone!

I ended up adding an event listener for "canplay" on the video element. Once its loaded, i ran video.play() and everything seems to be working fine.
Thanks everyone!

Request Full Screen HTML5 Video onPlay

I'm using the following code to trigger fullscreen when a user clicks on the play button on a <video> element:
var video = $("#video");
video.on('play', function(e){
if (video.requestFullscreen) {
video.requestFullscreen();
} else if (video.mozRequestFullScreen) {
video.mozRequestFullScreen();
} else if (video.webkitRequestFullscreen) {
video.webkitRequestFullscreen();
}
});
But nothing happens when I click the play button.
Any idea's why?
EDIT: Here's my HTML code:
<video width="458" height="258" controls id='video' >
<source src='<?= bloginfo('template_directory'); ?>/inc/pilot.mp4' type="video/mp4">
<source src='<?= bloginfo('template_directory'); ?>/inc/pilot.ogv' type="video/ogg">
<source src='<?= bloginfo('template_directory'); ?>/inc/pilot.webm' type="video/webm">
</video>

There are a couple things going on here:
First, in your code, video is a jQuery object, not the actual video element. For a jQuery object, you can reference it like this:
var actualVideo = video[0]; // (assuming '#video' actually exists)
Second, for security and good user experience, browsers will only let you trigger full screen inside a user-triggered event, like a 'click'. You can't have every web page going to full screen as soon as you visit it, and you can cause a video to start playing automatically, which would violate that rule.
So an alternative solution would be to request fullscreen in a click event, like this:
var video = $("#video");
video.on('click', function(e){
var vid = video[0];
vid.play();
if (vid.requestFullscreen) {
vid.requestFullscreen();
} else if (vid.mozRequestFullScreen) {
vid.mozRequestFullScreen();
} else if (vid.webkitRequestFullscreen) {
vid.webkitRequestFullscreen();
}
});
Ideally, you'd probably want to build out a more complete player ui, but this should give you the general idea.

A less verbose way to toggle full screen combining answers from this and other questions.
This should handle all browser flavours: chromium- and webkit-based, firefox, opera, and MS-based browsers.
var p = document.querySelector('#videoplayer');
if (!window.isFs) {
window.isFs = true;
var fn_enter = p.requestFullscreen || p.webkitRequestFullscreen || p.mozRequestFullScreen || p.oRequestFullscreen || p.msRequestFullscreen;
fn_enter.call(p);
} else {
window.isFs = false;
var fn_exit = p.exitFullScreen || p.webkitExitFullScreen || p.mozExitFullScreen || p.oExitFullScreen || p.msExitFullScreen;
fn_exit.call(p);
}
p represents the DOM object of the video element, and window.isFs is just a random variable for storing the current fullscreen state.
If your player is a jQuery object then you can get the underlying DOM-element with var p = player.get(0).

Adding audio to click event

I want to add a sound clip to a button on a game I am creating. Currently It doesn't do anything and I don't know why.
At the moment In the script I have...
var audio = $(".mysoundclip")[0];
$(".minibutton").onclick(function() {
audio.play();
});
In the HTML I have...
<audio id="mysoundclip" preload="auto">
<source src="http://www.wav-sounds.com/cartoon/bugsbunny1.wav"></source>
</audio>
Then I have CSS for .minibutton.
Any ideas why it won't work?

Your jQuery had some simple errors in it.
HTML
<audio id="mysoundclip" preload="auto">
<source src="http://www.wav-sounds.com/cartoon/bugsbunny1.wav"></source>
</audio>
<button type="button">play</button>
jQuery
var audio = $("#mysoundclip")[0];
$("button").click(function() {
audio.play();
});​
Fiddle: http://jsfiddle.net/iambriansreed/VavyK/
​

Maybe I'm a too suspicous.. but
http://www.sound-effect.com/sounds1/animal/Saf/Tiger1.wav "The requested URL was not found on this server"
If that's just a typo, you should also try to figure out which audio types a browser is capable to play:
myApp.htmlAudio = (function _htmlAudioCheck() {
var elem = document.createElement('audio'),
bool = false;
try {
if( !!elem.canPlayType ) {
bool = new Boolean(bool);
bool.ogg = elem.canPlayType('audio/ogg; codecs="vorbis"');
bool.mp3 = elem.canPlayType('audio/mpeg;');
bool.wav = elem.canPlayType('audio/wav; codecs="1"');
bool.m4a = ( elem.canPlayType('audio/x-m4a;') || elem.canPlayType('audio/aac;'));
}
} catch(e) { }
return bool;
}());
Now we can check like
if( myApp.htmlAudio && myApp.htmlAudio.wav ) {
}
if the browser is able to playback .wav files for instance.
However, I never saw a nested source element for audio elements. That should be named track if anything. But you don't really need that here, you can just have a src attribute on the audio element itself. Example: http://jsfiddle.net/5GUPg/1/