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brightness.html
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brightness.html
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<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>Video Frames</title>
<link rel="stylesheet" href="style.css">
<style>
#movieclip {
display: none;
}
</style>
</head>
<body>
<header>Avoid cross domain security error. $ http-server -p 8000 </header>
<canvas id="canvas" width="600" height="360"></canvas>
<input id="adjustment" type="range" value="100" min="0" max="255" step="1"/>
<video id="movieclip" width="640" height="360" autoplay>
<source src="./assets/movieclip.mp4" type="video/mp4"/>
<source src="./assets/movieclip.webm" type="video/webm"/>
<source src="./assets/movieclip.ogv" type="video/ogg"/>
</video>
<script src="utils.js"></script>
<script src="Stats.js"></script>
<script src="Filters.js"></script>
<script>
window.onload = function () {
var canvas = document.getElementById('canvas'),
context = canvas.getContext('2d'),
video = document.getElementById('movieclip'),
stats = Stat.initStats();
(function drawFrame () {
stats.begin();
window.requestAnimationFrame(drawFrame, canvas);
context.drawImage(video, 0, 0);
var imageData = context.getImageData(0, 0, canvas.width, canvas.height),
adjustment = parseInt(document.getElementById('adjustment').value, 10) || 0;
Filters.brightness(imageData, adjustment);
context.putImageData(imageData, 0, 0);
stats.end();
}());
};
</script>
</body>
</html>