安防参数解读：最低照度、码率、光学/数字变倍、快门、宽动态… ...
<section style="display:none;" data-tools="新媒体管家" data-label="powered by xmt.cn"><br></section><section style="font-size: 15px;color: rgb(113, 112, 113);letter-spacing: 1.2px;line-height: 1.9;box-sizing: border-box;"><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">最低照度是什么意思？</p><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">分辨率、码率有什么关系？</p><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">背光补偿、宽动态、强光抑制分别适用于什么环境？</p><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">……</p><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">对于以上问题</p><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">你是否也有过疑惑？</p><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">本篇文章</p><p style="margin-bottom: 1px;text-align: center;white-space: normal;box-sizing: border-box;">小编来解读一下常见的安防参数</p><p style="text-align: center;white-space: normal;box-sizing: border-box;">大家一起来补补课吧~</p></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">01 最低照度解读</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;color: rgb(141, 162, 161);box-sizing: border-box;">照度</span></strong>：即光照强度，是一种物理术语，指单位面积上所接受可见光的能量。单位：Lux（勒克斯）。</p><p style="white-space: normal;box-sizing: border-box;">产品参数里最低照度参数通常由三部分组成，例如：</p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;">最<span style="box-sizing: border-box;">低照度</span></span></strong></span><strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;">：</span></strong>是用来衡量摄像机在多暗的环境下能感应到光线的一个指标。值越小表示摄像机的低照度越好。</p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">02 视频压缩标准解读</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">码流可设置为H.265、H.264、MPEG4、MJPEG等编码格式，目前主流使用H.265编码。在保证图像质量的前提下，典型场景中，Smart 264/ 265编码格式的平均码率相比普通H.264/H.265 码率，最多可节省50%的存储空间，节省用户存储成本。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">03 分辨率和码率的关系</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">分辨率</span></strong></span>：衡量图像细节表现的技术参数，表示成水平像素点数*垂直像素点数的形式。分辨率越高，意味使用点数越多，图像越细致。</p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">码率</span></strong></span>：视频码率就是数据传输时单位时间传送的数据位数，单位kbps。码率越高，所需的带宽越大，存储空间也越大。</p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">常见的分辨率与码率的关系：</p></section><section style="text-align: center;margin-top: 10px;margin-right: 0%;margin-left: 0%;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 100%;height: auto;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="box-sizing: border-box;"><span style="letter-spacing: 1.2px;color: rgb(215, 0, 15);box-sizing: border-box;">注：<span style="letter-spacing: 1.2px;color: rgb(113, 112, 113);box-sizing: border-box;">上表仅供参考，</span></span><span style="letter-spacing: 1.2px;box-sizing: border-box;">smart264\smart265是海康独有的编码方式，需要后端支持对应方式解码。</span></span><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">如果码率过低，会影响画面清晰度，大家可以看下下面两张对比图效果：</p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">分辨率1080P，匹配的码率上限效果</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;" powered-by="xiumi.us"><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">码率过低，画面出现马赛克</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;" powered-by="xiumi.us"><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="text-align: right;white-space: normal;box-sizing: border-box;"><span style="font-size: 12px;color: rgb(95, 145, 183);box-sizing: border-box;">*图为内部拍摄，模拟示意</span></p></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">04 变码率与定码率的区别</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">在设备的配置中，码率类型可设置为<span style="font-size: 16px;color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;">变码率</strong></span>或者<span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">定码率</span></strong></span>。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">定码率</span></strong></span>：<span style="letter-spacing: 1.2px;box-sizing: border-box;">视频码率在设定值附近相对固定，不会大范围波动，在分辨率与码率匹配的情况下，可以保证较好的成像效果，推荐使用。</span></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">变码率</span></strong></span>：视频码率在设定值以下根据环境复杂度波动，相对节省存储空间，但在环境有较大变化的情况下，可能会有马赛克。</p></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">05 光学变倍和数字变倍的区别</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">变倍</span></strong></span>分为<span style="color: rgb(141, 162, 161);box-sizing: border-box;">光学变倍</span>和<span style="color: rgb(141, 162, 161);box-sizing: border-box;">数字变倍</span><span style="color: rgba(62, 62, 62, 0.94);box-sizing: border-box;">。</span></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="font-size: 16px;color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;">光学变倍</strong></span>：光学变倍是依靠光学结构来实现变倍，把所拍摄的图像整体放大，分辨率和画质不会改变，通过摄像机的镜片移动来放大与缩小需要拍摄的景物，<span style="color: rgb(141, 162, 161);box-sizing: border-box;">光学变倍倍数越大，能拍摄的景物就越远</span>。<br style="box-sizing: border-box;"></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">数字变倍</span></strong></span>：<span style="letter-spacing: 1.2px;color: rgb(141, 162, 161);box-sizing: border-box;">指画面上的电子放大</span><span style="letter-spacing: 1.2px;box-sizing: border-box;">，把原来影像传感器上的一部分像素使用“插值”处理手段做放大，通过数字变倍，可以把拍摄的景物放大，但它的清晰度会有一定程度的下降。</span></p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">下面我们通过图片来看下对应效果及区别吧：</strong></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">原始图像</p></section><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;" powered-by="xiumi.us"><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">光学变倍效果</p></section><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;" powered-by="xiumi.us"><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">数字变倍（电子放大）效果</p></section><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;" powered-by="xiumi.us"><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="text-align: right;white-space: normal;box-sizing: border-box;"><span style="font-size: 12px;color: rgb(95, 145, 183);box-sizing: border-box;">*以上图均为模拟拍摄，效果示意</span></p></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;"><strong style="letter-spacing: 1.2px;box-sizing: border-box;">06 快门与慢快门</strong></span><br style="box-sizing: border-box;"></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);font-size: 16px;box-sizing: border-box;">快门</span></strong>：<span style="letter-spacing: 1.2px;box-sizing: border-box;">指的是快门可设置的范围。</span></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;box-sizing: border-box;">快门越慢曝光时间越长，适合光线不足时监控，但是抓拍快速移动物体会有拖尾；</span></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;box-sizing: border-box;">快门越快曝光时间越短，适合抓拍快速移动物体，但是画面亮度可能会降低。</span></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;box-sizing: border-box;"><br style="box-sizing: border-box;"></span></p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;color: rgb(141, 162, 161);box-sizing: border-box;">慢快门</span></strong>：<span style="letter-spacing: 1.2px;box-sizing: border-box;">设备默认的快门速度为1/25秒，支持慢快门的设备，可支持1/3秒，1秒等更慢的快门速度。</span></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">07 背光补偿、宽动态、强光抑制</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">背光补偿</span></strong></span>：在背光场景下可以设置一个区域作为标准，让摄像机进行曝光调节输出合适的图像。<span style="letter-spacing: 1.2px;color: rgb(141, 162, 161);box-sizing: border-box;">背光补偿往往针对目标图像的特定区域有效。</span></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;color: rgb(29, 50, 239);box-sizing: border-box;"><br style="box-sizing: border-box;"></span></p><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(215, 0, 15);box-sizing: border-box;">注意</span>：因为亮度是整个画面同时提升，提升后，可能出现前景亮度合适，背景亮度却过曝的情况。宽动态技术比背光补偿更为有效的方案，不局限于目标图像的特定区域。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;text-align: right;white-space: normal;box-sizing: border-box;"><span style="font-size: 12px;color: rgb(86, 148, 224);box-sizing: border-box;">*模拟拍摄，效果示意图</span></p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">宽动态</span></strong></span>：宽动态的适用场景和背光补偿其实是相同的，不过宽动态能够使图像兼顾原先图像中亮和暗的部分。<span style="color: rgb(141, 162, 161);box-sizing: border-box;">宽动态可获得比背光补偿技术更加清新、艳丽的图像。</span></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: center;font-size: 12px;color: rgb(95, 145, 183);box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: right;box-sizing: border-box;">*模拟拍摄，效果示意图</p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">强光抑制</span></strong></span>：强光抑制主要使用在道路监控的车牌捕获过程中，夜晚车辆前灯开启，强光导致车牌部分无法看清，开启此功能，可以对强光点进行适当抑制，使其它区域获得一定的补偿以获得更清晰的图像。该功能最常用于夜间看清车牌号。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: justify;color: rgb(95, 145, 183);box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: right;white-space: normal;box-sizing: border-box;"><span style="font-size: 12px;box-sizing: border-box;">*模拟拍摄，效果示意图</span></p></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">08 时域降噪与空域降噪</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;">数字降噪选择专家模式后，会有<strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;">空</span></strong><strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;">域降噪</span></strong>和<strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;">时域降噪</span></strong>两个选项。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);font-size: 16px;box-sizing: border-box;">数字降噪作用</span></strong>：调节对噪点的处理程度。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);font-size: 16px;box-sizing: border-box;">空域降噪</span></strong>：帧内降噪，通过对比同一帧内不同区域的图像进行降噪处理。设置的等级过高会牺牲更多的细节。</p><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;">时域降噪</span></strong></span>：帧间降噪，通过前后帧对比从而去掉多余的噪点部分达到降噪的效果。设置的等级过高对快速运动的物体可能会造成拖影的情况。</p></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">9 镜像与旋转</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">镜像</span></strong></span>：实现图像的上下/左右/中心翻转，其中中心翻转是指上下翻转的同时又实现左右的翻转。</p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="text-align: center;white-space: normal;box-sizing: border-box;">镜像的几种效果</p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">旋转</span></strong></span>：即<span style="color: rgb(141, 162, 161);box-sizing: border-box;">走廊模式</span>，<span style="letter-spacing: 1.2px;box-sizing: border-box;">开启该功能后视频编码将逆时针旋转90°，例如1280*720 旋转为720*1280；适用于将摄像机旋转安装监控垂直方向更大的有效范围的场所，例如走廊、道路等。</span></p><p style="white-space: normal;box-sizing: border-box;"><span style="letter-spacing: 1.2px;color: rgb(141, 162, 161);box-sizing: border-box;">若使用该功能，需要将设备旋转90°安装</span><span style="letter-spacing: 1.2px;box-sizing: border-box;">。主要用在室内支持三轴调节的半球上。</span></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">原始图像</p></section><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;" powered-by="xiumi.us"><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;width: 65%;height: auto;box-sizing: border-box;"></section></section><section style="font-size: 12px;text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><p style="box-sizing: border-box;">走廊模式图像</p></section><section style="margin-top: 0.5em;margin-bottom: 0.5em;box-sizing: border-box;" powered-by="xiumi.us"><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section><section style="border-top: 1px dashed rgb(207, 207, 207);box-sizing: border-box;text-align: right;"><span style="color: rgb(95, 145, 183);font-size: 12px;letter-spacing: 1.2px;text-align: right;background-color: rgba(141, 162, 161, 0.05);">*以上图均为模拟拍摄，效果示意</span></section></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-top: 10px;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: auto;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section><section style="display: inline-block;vertical-align: top;width: auto;align-self: flex-start;flex: 0 0 auto;min-width: 10%;max-width: 100%;height: auto;background-color: rgb(141, 162, 161);padding: 9px;box-sizing: border-box;"><section style="text-align: justify;color: rgb(255, 255, 255);font-size: 16px;box-sizing: border-box;" powered-by="xiumi.us"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">10 帧率与I帧间隔</strong></p></section></section><section style="display: inline-block;vertical-align: bottom;width: auto;align-self: flex-end;flex: 100 100 0%;height: auto;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="background-color: rgb(141, 162, 161);height: 2px;box-sizing: border-box;"><svg viewbox="0 0 1 1" style="float:left;line-height:0;width:0;vertical-align:top;"/></section></section></section></section><section style="text-align: left;justify-content: flex-start;display: flex;flex-flow: row nowrap;margin-bottom: 10px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 100%;vertical-align: top;align-self: flex-start;flex: 0 0 auto;background-color: rgba(141, 162, 161, 0.05);padding: 25px;border-bottom: 2px solid rgb(141, 162, 161);border-bottom-right-radius: 0px;box-sizing: border-box;"><section style="text-align: justify;box-sizing: border-box;" powered-by="xiumi.us"><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">帧率</span></strong></span>：时间上连续的图像组成视频，视频中的某一幅图像称为一帧。画面每秒更新的次数称为帧率，帧率大小影响画面的流畅程度，帧率越高，画面越流畅。<span style="letter-spacing: 1.2px;box-sizing: border-box;">人眼在视频帧率大于25时看不出视频卡顿。</span><span style="letter-spacing: 1.2px;box-sizing: border-box;">单位为fps。降低帧率会导致画面卡顿，一般以默认设置即可，不建议做改动。</span></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><span style="color: rgb(141, 162, 161);box-sizing: border-box;"><strong style="box-sizing: border-box;"><span style="font-size: 16px;box-sizing: border-box;">I 帧间隔</span></strong></span>：视频是由一幅幅图片组成的，每幅图片称之为一帧，视频压缩编码分为关键帧（I帧）和非关键帧（P帧），I帧用于保存视频关键信息。I帧间隔就是指多少张图片出一个关键帧。I帧间隔太大会导致丢失画面关键信息，太小需要更多的码率和带宽来支持。建议默认即可。</p><p style="margin-bottom: 1px;white-space: normal;box-sizing: border-box;"><br style="box-sizing: border-box;"></p></section><section style="text-align: center;margin-top: 10px;margin-bottom: 10px;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"></section></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin: 10px 0%;justify-content: flex-start;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 15%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: center;margin-top: 10px;margin-right: 0%;margin-left: 0%;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;border-width: 0px;border-radius: 100%;border-style: none;border-color: rgb(62, 62, 62);overflow: hidden;box-shadow: rgb(0, 0, 0) 0px 0px 0px;box-sizing: border-box;"></section></section></section><section style="display: inline-block;vertical-align: top;width: 8%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: right;margin-top: 25px;margin-right: 0%;margin-left: 0%;transform: translate3d(4px, 0px, 0px);box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 20px;height: 30px;vertical-align: top;overflow: hidden;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/b2729a5f-96c0-4bdb-8c0e-a5accf7a4435.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 54%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;padding-top: 10px;padding-bottom: 10px;box-sizing: border-box;"><section style="text-align: center;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;border-width: 3px;border-style: solid;border-color: rgb(0, 0, 0);background-color: rgb(255, 255, 255);box-sizing: border-box;"><section style="margin: -4px 0% -10px;justify-content: center;display: flex;flex-flow: row nowrap;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;vertical-align: top;width: 50%;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(-4px, 0px, 0px);margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/025c60d7-589a-4d5c-9901-b5e0c559fde6.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 50%;border-width: 0px;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(4px, 0px, 0px) rotateY(180deg);margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;border-width: 0px;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/025c60d7-589a-4d5c-9901-b5e0c559fde6.png" ></section></section></section></section></section></section><section style="margin: -20px 0% -15px;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;min-width: 10%;max-width: 100%;vertical-align: top;padding: 5px 10px;border-width: 0px;box-sizing: border-box;"><section style="margin-top: 5px;margin-right: 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top;overflow: hidden;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/025c60d7-589a-4d5c-9901-b5e0c559fde6.png" ></section></section></section></section></section><section style="display: inline-block;vertical-align: top;width: 50%;border-width: 0px;align-self: flex-start;flex: 0 0 auto;box-sizing: border-box;"><section style="text-align: left;transform: translate3d(4px, 0px, 0px) rotateY(180deg);margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="display: inline-block;width: 12px;height: 12px;vertical-align: top;overflow: hidden;border-width: 0px;line-height: 0;box-sizing: border-box;"><section style="text-align: center;margin-right: 0%;margin-left: 0%;line-height: 0;box-sizing: border-box;" powered-by="xiumi.us"><section style="max-width: 100%;vertical-align: middle;display: inline-block;line-height: 0;box-sizing: border-box;"><img src="https://neice.26x.net/UploadFile/common/wechat//2023/02-19/025c60d7-589a-4d5c-9901-b5e0c559fde6.png" ></section></section></section></section></section></section></section></section></section></section></section></section><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><p style="white-space: normal;box-sizing: border-box;" powered-by="xiumi.us"><br style="box-sizing: border-box;"></p><section style="margin-top: 10px;margin-right: 0%;margin-left: 0%;box-sizing: border-box;" powered-by="xiumi.us"><section style="font-size: 17px;color: rgb(215, 0, 15);box-sizing: border-box;"><p style="white-space: normal;box-sizing: border-box;"><strong style="box-sizing: border-box;">● 往期推荐</strong></p></section></section><section 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