mirror of
https://github.com/Erreur32/html5demos.git
synced 2024-09-28 17:21:29 +02:00
114 lines
3.8 KiB
HTML
114 lines
3.8 KiB
HTML
<title>Video</title>
|
|
<article>
|
|
<p id="altmsg">It doesn't appear that your browser supports native video, sorry :(</p>
|
|
<p id="controls">
|
|
<input type="button" id="play" value="play">
|
|
<span id="position">00:00</span> / <span id="duration">loading...</span>
|
|
</p>
|
|
<p>Video loaded: <span id="using">loading...</span></p>
|
|
<p>Note that (at time of writing) <a href="http://webkit.org/" title="The WebKit Open Source Project">Webkit nightly</a> supports full screen mode, which will add a button above.</p>
|
|
</article>
|
|
<script>
|
|
/*
|
|
Note that this example used to contain the video inline in the HTML above.
|
|
However, since it's been understood that there's the possible risk of a race
|
|
condition (which I'll explain in a moment), it means the best way to prevent
|
|
this problem is to generate the video element attaching the events, and only
|
|
once all this is in place, assign the source and insert the element.
|
|
|
|
Other possible alternatives would be to listen on the window object for the
|
|
loadedmetadata event and to check the event.target with the element we're
|
|
interested in, but it would require the script at the top of the code -
|
|
which would block, and that's something I prefer not to do.
|
|
|
|
Another alternative is to put inline event handlers in the markup, again
|
|
this is something I prefer not to do.
|
|
|
|
I was called out by a couple of eager folk, one suggesting that what we had
|
|
before wasn't The Right Way(tm) - which frankly, ultimately, since we can't
|
|
attach the event handlers like we would anything else (though technically
|
|
an image element is subject to the same problems), I argue that there's
|
|
therefore No Right Way(tm) to achieve this. Anyway, this change is for
|
|
them. I know they'll love me a little more for it. Maybe. Perhaps. ...
|
|
|
|
*/
|
|
|
|
|
|
var container = document.getElementById('altmsg'),
|
|
video = document.createElement('video'),
|
|
source, // support will be detected
|
|
togglePlay = document.getElementById('play'),
|
|
position = document.getElementById('position'),
|
|
using = document.getElementById('using'),
|
|
ready = false,
|
|
controls = document.getElementById('controls'),
|
|
fullscreen = null;
|
|
|
|
if (video.canPlayType('video/webm')) {
|
|
source = 'assets/dizzy.webm';
|
|
} else if (video.canPlayType('video/mp4')) {
|
|
source = 'assets/dizzy.mp4';
|
|
} else if (video.canPlayType('video/ogv')) {
|
|
source = 'assets/dizzy.ogv';
|
|
}
|
|
|
|
addEvent(togglePlay, 'click', function () {
|
|
if (ready) {
|
|
video.playbackRate = 0.5;
|
|
if (video.paused) {
|
|
if (video.ended) video.currentTime = 0;
|
|
video.play();
|
|
this.value = "pause";
|
|
} else {
|
|
video.pause();
|
|
this.value = "play";
|
|
}
|
|
}
|
|
});
|
|
|
|
addEvent(video, 'timeupdate', function () {
|
|
position.innerHTML = asTime(this.currentTime);
|
|
});
|
|
|
|
addEvent(video, 'ended', function () {
|
|
togglePlay.value = "play";
|
|
});
|
|
|
|
// this used to be canplay, but really it should have been loadedmetadata - sorry folks
|
|
addEvent(video, 'loadedmetadata', function () {
|
|
video.muted = true;
|
|
ready = true;
|
|
document.querySelector('#duration').innerHTML = asTime(this.duration);
|
|
using.innerHTML = this.currentSrc;
|
|
// note: .webkitSupportsFullscreen is false while the video is loading, so we bind in to the canplay event
|
|
if (video.webkitSupportsFullscreen) {
|
|
fullscreen = document.createElement('input');
|
|
fullscreen.setAttribute('type', 'button');
|
|
fullscreen.setAttribute('value', 'fullscreen');
|
|
controls.insertBefore(fullscreen, controls.firstChild);
|
|
addEvent(fullscreen, 'click', function () {
|
|
video.webkitEnterFullScreen();
|
|
});
|
|
}
|
|
});
|
|
|
|
if (source) {
|
|
video.src = source;
|
|
console.log(video);
|
|
container.parentNode.replaceChild(video, container);
|
|
}
|
|
|
|
function asTime(t) {
|
|
t = Math.round(t);
|
|
var s = t % 60;
|
|
var m = Math.round(t / 60);
|
|
|
|
return two(m) + ':' + two(s);
|
|
}
|
|
|
|
function two(s) {
|
|
s += "";
|
|
if (s.length < 2) s = "0" + s;
|
|
return s;
|
|
}
|
|
</script> |