启!需要https加载web,播放https/wss-flv流. 如果控制台打印 "WCS
            is not supported or experimental-web-platform-features not enabled" 请将当前页面使用https访问
        </div>
        <div class="input">
            <div>输入URL：</div>
            <input
                autocomplete="on"
                id="playUrl"
                value=""
            />
            <button id="play">播放</button>
            <button id="pause" style="display: none">停止</b