<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script src="https://code.jquery.com/jquery-3.6.0.js" integrity="sha256-H+K7U5CnXl1h5ywQfKtSj8PCmoN9aaq30gDh27Xc0jk=" crossorigin="anonymous"></script>
</head>
<body>
<div><button onclick="getVideoImg()">获取视频图片</button></div>
<div><img src="" id="testImg" /></div>
</body>
<script type="text/javascript">
function getVideoImg() {
var url = "https://xxxxx/test.mp4"; //你的视频地址
return new Promise(function (resolve, reject) {
let dataURL = '';
let video = document.createElement("video");
video.setAttribute('crossOrigin', 'anonymous');//处理跨域
video.setAttribute('src', url);
video.setAttribute('width', 400);
video.setAttribute('height', 240);
video.setAttribute('preload', 'auto');
video.addEventListener('loadeddata', function () {
let canvas = document.createElement("canvas"),
width = video.width, //canvas的尺寸和图片一样
height = video.height;
canvas.width = width;
canvas.height = height;
canvas.getContext("2d").drawImage(video, 0, 0, width, height); //绘制canvas
setTimeout(function () {
dataURL = canvas.toDataURL('image/jpeg'); //转换为base64
console.log(dataURL)
$("#testImg").attr("src", dataURL);
resolve(dataURL);
}, 2000);
});
})
}
</script>
</html>
