 $pause = document.getElementById('pause');
    var $playHref = document.getElementById('playUrl');
    var $container = document.getElementById('container');
    var $destroy = document.getElementById('destroy');


    var showOperateBtns = true; // 是否显示按钮
    var forceNoOffscreen = true; //
    var jessibuca = null;

    function create() {
        jessibuca = new Jessibuca({
            container: $container,
            videoBuffer: 0.2, // 缓存时长
            isResize: false,
         