javascript - 如何创建视频文件的 blob

Question

我想创建一个本地视频文件的 Blob file:///home/user/NodeJS/Projects/project1/routes/../videosTrans/Node.js 初学者教程 - Node.js 介绍使用 Express2.js.mp4

我无法理解 Blob 的确切格式。我希望创建它以将其作为函数 createObjectURL() 的输入。以下不起作用:

 var URL = this.window.URL || this.window.webkitURL;
       var file = new Blob(["file:///home/sanika/NodeJS/Projects/project1/routes/../videosTrans/Node.js tutorial for beginners - an introduction to Node.js with Express2.js.mp4"], "type" : "video\/mp4");
       var value = URL.createObjectURL(file);

Answer 1

请使用blob的第二个参数作为对象。所以你的代码应该是:

var URL = this.window.URL || this.window.webkitURL;
var file = new Blob(
    ["file:///home/sanika/NodeJS/Projects/project1/routes/../videosTrans/Node.js tutorial for beginners - an introduction to Node.js with Express2.js.mp4"],
    {"type" : "video\/mp4"});
var value = URL.createObjectURL(file);