html5的Video怎么在暂停时截取当前帧的图片
展开全部
利用canvas画布
<script>
(function() {
"use strict";
var video, $output;
var scale = 0.25;
var initialize = function() {
$output = $("#output");
video = $("#video").get(0);
$("#capture").click(captureImage);
};
var captureImage = function() {
var canvas = document.createElement("canvas");
canvas.width = video.videoWidth * scale;
canvas.height = video.videoHeight * scale;
canvas.getContext('2d')
.drawImage(video, 0, 0, canvas.width, canvas.height); var img = document.createElement("img");
img.src = canvas.toDataURL('image/png');
$output.prepend(img);
};
$(initialize);
}());
</script>
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