iv>
        </div>
        <div class="input">
            <div>
                <input
                    checked
                    type="checkbox"
                    id="isFlv"
                /><span>是否flv格式</span>
                <span>缓存时长：</span>
                <input placeholder="单位：秒" type="text" id="videoBuffer" style="width: 50px" value="0.2">秒
                <span>缓存延迟(延迟超过会触发丢帧)：</span>
                <input placeholder="单位：秒