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test_live.html
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test_live.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8"/>
<title>MediaSource Test</title>
<meta name="description" content="" />
<script>
var ms,
sourceBuffer,
video,
baseUrl = "http://pixie.path1.com/dash/",
mimetype,
codec,
loaded = 0,
frags,
template,
playbackStarted = false;
/*
<AdaptationSet frameRate="30000/1001" mimeType="video/mp4" codecs="avc1.4D401F" startWithSAP="1" segmentAlignment="true">
<SegmentTemplate timescale="30000" duration="60060" media="$Bandwidth$/$Number$.m4v" initialization="$Bandwidth$/0.m4s" />
<Representation width="342" height="192" id="v0" bandwidth="500000" />
<Representation width="556" height="312" id="v1" bandwidth="525000" />
<Representation width="708" height="398" id="v2" bandwidth="850000" />
<Representation width="832" height="468" id="v3" bandwidth="1175000" />
<Representation width="942" height="528" id="v4" bandwidth="1500000" />
</AdaptationSet>
<AdaptationSet mimeType="audio/mp4" codecs="mp4a.40.2" startWithSAP="1" segmentAlignment="true">
<SegmentTemplate timescale="48000" duration="96096" media="audio/$Number$.m4a" initialization="audio/0.m4s" />
<Representation id="a0" bandwidth="96000" />
</AdaptationSet>
*/
function loadVideo() {
mimetype = "video/mp4";
codec = "avc1.4D401F";
template = {
timescale: 30000,
duration: 60060,
media: "500000/$Number$.m4v",
initialization: "500000/0.m4s"
};
loadTemplate();
}
function loadAudio() {
mimetype = "audio/mp4";
codec = "mp4a.40.5";
template = {
timescale: 48000,
duration: 96096,
media: "audio/$Number$.m4a",
initialization: "audio/0.m4s"
};
loadTemplate();
}
function loadTemplate() {
console.log("CALCULATE FRAGMENTS");
var startTime = new Date("2013-04-05T19:03:57"),
now = new Date(),
offset = (now.getTime() - startTime.getTime()) / 1000,
len,
num;
offset -= 20;
frags = [];
num = Math.floor(offset / (template.duration / template.timescale));
len = num + 10;
for (num; num < len; num += 1) {
frags.push(baseUrl + template.media.split("$Number$").join(num));
}
console.log("FRAGMENTS:");
console.log(frags);
console.log("START");
window.MediaSource = window.MediaSource || window.WebKitMediaSource;
ms = new MediaSource();
video = document.querySelector('video');
video.src = window.URL.createObjectURL(ms);
ms.addEventListener('webkitsourceopen', opened, false);
ms.addEventListener('webkitsourceclose', closed, false);
}
function opened() {
var value = mimetype + ';codecs="' + codec + '"',
url = baseUrl + template.initialization;
console.log("OPENED");
console.log(value);
sourceBuffer = ms.addSourceBuffer(value);
console.log("LOAD INIT");
var req = new XMLHttpRequest();
req.responseType = "arraybuffer";
req.open("GET", url, true);
req.onload = function () {
console.log("INIT DONE LOADING");
sourceBuffer.append(new Uint8Array(req.response));
loadNext();
}
req.onerror = function () {
alert("Could not load init.");
}
req.send();
}
function loadNext() {
if (loaded >= frags.length) {
console.log("EVERYTHING IS LOADED!");
return;
}
var url = frags[loaded],
i,
len,
ranges = sourceBuffer.buffered;
console.log("--STATUS-------");
console.log("CURRENT TIME: " + video.currentTime);
console.log("BUFFERED RANGES: " + ranges.length);
for (i = 0, len = ranges.length; i < len; i += 1) {
console.log("RANGE: " + ranges.start(i) + " - " + ranges.end(i));
}
console.log("---------------");
console.log("LOAD FRAGMENT: " + url);
var req = new XMLHttpRequest();
req.responseType = "arraybuffer";
req.open("GET", url, true);
req.onload = function () {
console.log("FRAGMENT DONE LOADING");
sourceBuffer.append(new Uint8Array(req.response));
if (!playbackStarted) {
playbackStarted = true;
video.play();
video.currentTime = sourceBuffer.buffered.start(0);
}
loaded += 1;
loadNext();
}
req.onerror = function () {
alert("Could not load fragment.");
}
req.send();
}
function closed() {
alert("MediaSource Closed.");
}
</script>
</head>
<body>
<button type="button" onclick="loadVideo()">Load Video</button>
<button type="button" onclick="loadAudio()">Load Audio</button>
<video controls autoplay width="320" height="240"></video>
</body>
</html>