value="1">秒
                <span>秘钥：</span>
                <input type="text" id="sm4Key" style="width: 200px" placeholder="请输入32位的sm4秘钥" value="">
                <button id="replay">重播</button>
            </div>
        </div>
        <div class="input">
            <div>
                <input
                    checked
                    type="checkbox"
                    id="demuxUseWorker"
                /><span>硬解码(MediaSource，Webcodec)worker解封装</span>
 