excel中varp函数的使用方法(var公式excel)

1. var公式excel

以最上面为A1单元格为例：在A列后面插入一辅助列，在新的B1中输入以下公式，下拉填充：=right(right(a1,len(a1)-find("；",a1)),len(right(a1,len(a1)-find("；",a1)))-1)将该列加和即为总数，单位“万元”

2. 协方差cov与方差var公式

cov(x,y)=EXY－EX*EY

协方差的定义，EX为随机变量X的数学期望，同理，EXY是XY的数学期望，挺麻烦的，建议你看一下概率论cov(x,y)=EXY－EX*EY。

协方差的定义，EX为随机变量X的数学期望，同理，EXY是XY的数学期望，挺麻烦的，建议你看一下概率论。

举例：

Xi 1.1 1.9 3

Yi 5.0 10.4 14.6

E(X) = (1.1+1.9+3)/3=2

E(Y) = (5.0+10.4+14.6)/3=10

E(XY)=(1.1×5.0+1.9×10.4+3×14.6)/3=23.02

Cov(X,Y)=E(XY)-E(X)E(Y)=23.02-2×10=3.02

此外：还可以计算：D(X)=E(X^2)-E^2(X)=(1.1^2+1.9^2+3^2)/3 - 4=4.60-4=0.6 σx=0.77

D(Y)=E(Y^2)-E^2(Y)=(5^2+10.4^2+14.6^2)/3-100=15.44 σy=3.93

X,Y的相关系数：

r(X,Y)=Cov(X,Y)/(σxσy)=3.02/(0.77×3.93) = 0.9979

表明这组数据X,Y之间相关性很好!

拓展资料

协方差（Covariance）在概率论和统计学中用于衡量两个变量的总体误差。而方差是协方差的一种特殊情况，即当两个变量是相同的情况。

协方差表示的是两个变量的总体的误差，这与只表示一个变量误差的方差不同。如果两个变量的变化趋势一致，也就是说如果其中一个大于自身的期望值，另外一个也大于自身的期望值，那么两个变量之间的协方差就是正值。如果两个变量的变化趋势相反，即其中一个大于自身的期望值，另外一个却小于自身的期望值，那么两个变量之间的协方差就是负值。

3. var公式怎么用

样本方差是统计学(数理统计)的一个基本概念，它的定义如下：“样本中各数据与样本平均数的差的平方的平均数叫做样本方差.”

现在把统计学里的“样本方差”的概念以“VAR”表示，成为我们编制公式时的一种“语言”(如同OPEN为开盘价，CLOSE为收盘价，HIGH为最高价，LOW为最低价等等)。

4. var公式计算

　　VaR为Value at risk的简写，中文意为风险价值方法，指未来一定时间内，在给定的条件下，任何一种金融工具和品种的市场价格的潜在最大损失。　　用数学公式可表示VaR为 Prob(?P>VaR)= 1-c 。其中?P为该金融资产在持续期内的损失，VaR为置信水平c下处于风险中的价值。　　通常，某金融资产的价值可以表示为P = P0(1+R)。其中P0为资产组合的初始价值，R是持有期内的投资收益率，设R的期望回报和波动性分别为μ和σ．如果在某一置信水平c下，金融资产的最低价值为P*= P 0(1+R)，则根据VAR值定义，相对于证券组合价值期望回报的VAR可以表示为VaR=E(P)-P* =-P0(R*-μ) 若不以金融资产价值的均值为基准，可以定义绝对 VaR=P0-P*=-P0(R*-μ)。

5. var公式性质

数学内插法即“直线插入法”。其原理是，若A（i1，b1），B（i2，b2）为两点，则点P（i，b）在上述两点确定的直线上。而工程上常用的为i在i1，i2之间，从而P在点A、B之间，故称“直线内插法”。

数学内插法说明点P反映的变量遵循直线AB反映的线性关系。

上述公式易得。A、B、P三点共线，则：（b-b1）/（i-i1）=（b2-b1）/（i2-i1）=直线斜率，变换即得所求。

内插法又称插值法。根据未知函数f（x）在某区间内若干点的函数值，作出在该若干点的函数值与f（x）值相等的特定函数来近似原函数f（x），进而可用此特定函数算出该区间内其他各点的原函数f（x）的近似值，这种方法，称为内插法。按特定函数的性质分，有线性内插、非线性内插等；按引数（自变量）个数分，有单内插、双内插和三内插等。

6. var公式表示

基本三角函数的计算：

角的正弦值 = 对边 / 斜边

角的余弦值 = 邻边 / 斜边

角的正切值 = 对边 / 邻边

角度制与弧度制的相互转换：

弧度 = 角度 * Math.PI / 180

角度 = 弧度 * 180 / Math.PI

计算两点间距离：

dx = x2 – x1;

dy = y2 – y1;

dist = Math.sqrt(dx*dx + dy*dy);

缓动公式:

sprite.x += (targetX - sprite.x) * easing;//easing为缓动系数变量

sprite.y += (targetY - sprite.y) * easing;

弹性公式:

vx += (targetX - sprite.x) * spring;//spring为弹性系数

vy += (targetY - sprite.y) * spring;

sprite.x += (vx *= friction);//friction为摩擦力

sprite.y += (vy *= friction);

偏移弹性公式:

var dx:Number = sprite.x - fixedX;

var dy:Number = sprite.y - fixedY;

var angle:Number = Math.atan2(dy, dx);

var targetX:Number = fixedX + Math.cos(angle) * springLength;

var targetY:Number = fixedX + Math.sin(angle) * springLength;

向鼠标旋转(或向某点旋转)

dx = mouseX - sprite.x;

dy = mouseY - sprite.y;

sprite.rotation = Math.atan2(dy, dx) * 180 / Math.PI;

波形运动:

public function onEnterFrame1(event:Event):void {

ball.y=centerScale+Math.sin(angle)*range;

angle+=speed;

}

心跳:

public function onEnterFrame1(event:Event):void {

7. var公式mu+z(x)

Adobe Premiere是Adobe家族的一款剪辑软件，它给我的感觉就是入门快、功能强大，无论是对于新手还是专业人士，PR在大部分情况下都是很友好的。

认识PR

Pr全称Adobe Premiere，是Adobe公司开发的一款视频剪辑&编辑软件。主要用于视频采集、视频剪辑、调色、添加字幕、编辑音频、渲染输出。

Premiere提供了采集、剪辑、调色、美化音频、字幕添加、输出、DVD刻录的一整套流程，并和其他Adobe软件高效集成，使用户足以完成在编辑、制作、工作流上遇到的所有挑战，满足用户创建高质量作品的要求。

下载PR软件

Adobe官网下载

进入Adobe官网进行下载https://www.adobe.com/cn/products/premiere.html

其他网页下载

1、打开浏览器今日头条搜索3D溜溜网，进入官网

2、打开浏览器搜索3D溜溜网，进入官网，点击上面【···】三个点之后选择【软件插件】里的【羽兔网软件下载】

3、选择【常用软件】里的【视频制作】

4、向下滑，在下面找到PR2018版本的进行【软件下载】，里面还有其他版本，这里选择的是适配win7的。

PR窗口介绍

Premiere软件由菜单栏、常用工具栏、时间轴、侧边面板栏（组件窗口）组成。主工作区有素材（项目）管理窗口、素材预览窗口、视频监视器窗口、时间轴窗口、调音台窗口、调色窗口等。

菜单栏

菜单栏可以说是整个软件的功能导图，为软件中大多数功能提供了菜单入口，例如PR软件中的绝大多数功能在对应的菜单栏中都可以找到。

功能窗口切换区域:(组件、编辑、颜色、效果、音频、字幕、库......)

功能窗口切换区域是软件为剪辑、调色、音频、字幕等不同功能定义的界面布局方案。点击对应的功能，软件会自动切换到使用该功能时的界面布局。

源素材预览窗口

源窗口主要是为项目面板中素材(视频、音频、图片)提供实时预览，双击项目面板中的素材即可在源窗口中进行播放预览。

节目监视窗口

节目窗口主要用于监视时间线上剪辑的画面，可以实时播放。

项目面板

项目面板主要是用于项目及素材的管理，我们导入到软件中的素材及新建的序列、字幕等素材全部都存放在项目面板中。

时间线窗口

时间线窗口可以简单理解为剪辑工作台，我们对素材的剪辑工作全部都是在时间线面板中操作完成。时间线窗口又可分为视频轨道和音频轨道。

工具栏

工具栏集合了所有视频剪辑工具，当然有一些是辅助剪辑工具。

选择工具（快捷键：V）

顾名思义，它的作用就是用来选择东西的，不过在有的时候它也会变为其它的形状，作用也随之改变。

向前选择轨道工具（快捷键：A）

使用此工具可以选择该轨道上以后的所有素材，视音频链接在一起的则音频同时也被选中；按住Shift键可以变为多轨道选择工具，此时单头变为双头，即使是单独的声音（比如音效、音乐等）也会被同时选中。

波纹编辑工具（快捷键：B）

使用此工具可以改变一段素材的入点和出点，这段素材后面的会自动吸附上去，总长度发生改变。

剃刀工具（快捷键：C）

pr中导入素材之后，利用剃刀工具切割开视频，视频就分开为多段了，可以分别剪辑切割后的每一段视频，包括删除、添加效果等。

外滑工具（快捷键：U）

作用于一段素材，用来同时改变此段素材的入点和出点。

钢笔工具（快捷键：P）

这个工具和字幕中的钢笔工具是一样，主要用来绘制形状。选中此工具，在需要的位置点击一下确定起点，直接点其它位置可以绘制直线，而在点第二个点的同时按住鼠标不放并进行拖拽可以绘制曲线；它还有一个作用就是进行关键帧的选择。

手形工具（快捷键：H）

点击鼠标左键，在时间轴上拖动，移动时间轴上显示素材的位置。当程序监视器放大时。拖放程序监视器中的可移动显示区域以观察细节。

文字工具（快捷键：T）

文字工具即在画面中输入我们想要的文字。

效果面板

效果面板集合了很多视频和音频效果控件，对视频或者音频添加模糊及转场等效果时，需要在效果面板中找到对应的效果控件然后添加到时间线上的剪辑。

效果控件面板

效果控件面板是对已经添加到素材上的效果进行参数调节的窗口。

音轨混合器窗口

对音频进行声道和音量调节的窗口，当然也可以通过这个窗口进行现场录音。

PR剪辑教程

创建项目

首先新建项目，暂存盘里的地址栏跟项目一样就可以。

新建序列

新建序列，选择1080p25，点击确定，就建立了一个时间线。

一般的剪辑软件里边都有现成的预设，只要知道这个尺寸就行，高清格式选择1080P或者720P都行。

导入素材

在项目列表双击，找到我们的素材，按住shift一块儿导入，导入之后可以对素材进行分类，让我们可以看的更仔细一些。（养成一个好的分类习惯，有助于提高我们工程的有趣性和效率，以后打包工程的整理都非常的有好处）。

拖入时间线

素材分类好之后，把视频音频素材按住shift一起都拖拽到时间线里。

设置比例

发现视频素材的大小不一，我们调整视频整体比例大小。找到信息，看见比例为640*360，在我们新建的时候不是这个比例，我们在序列里进行更改设置为640*360，这样时间线就跟我们相匹配了。

编辑视频

导入素材之后，我们开始对视频进行剪辑。

添加效果

添加效果，让视频看起来更流畅。

添加字幕

添加结尾字幕。

导出

剪辑完成，导出成品。

PR导出格式一般用MOV、mp4、AVI等等。PR输出视频的时候，要求不一样，输出的格式的就不一样。因为没有统一的标准，要根据需求和目的才能定什么是合适的。

1、如果想输出文件后继续进行编辑，一般推荐输出MOV。

2、如果输出文件后直接就要观看，或传到视频网站。推荐输出H.264，即mp4。

3、如果输出文件给电视台标清播出，就输出AVI格式。

成品

下面这张是成品

这里用的是PR2018版本

PR基础快捷键

1、按i可以设置入点，O可以设置出点。

2、Shift+delete键可以删除视频同时，把视频之间的间隙去掉；Ctrl+Z撤销。

3、向前选择轨道工具（A）和链接选择项的结合使用可以删除选择点后面的视频和音频

4、向前选择轨道工具（A）和取消链接选择项的结合使用按shift键可单独删除视频，保留音频。

5、按Q键可删除剪辑的开始，按W键可删除剪辑的结尾，但是它们会从每个音轨中删除内容，如果有多层音轨，这个快捷键就不适用，可以通过锁定音频轨道来避免音频被删除。

6、按光标键→，按一下前进一帧，按Shift键+光标键，一下会前进5帧。

7、alt+拖动素材=复制

常用的快捷键如下：

注：如果自己不适应默认的快捷键可以在PR界面快捷键设置修改，步骤如下：

打开快捷键界面有两种方法：第一种方法，打开PR后，在菜单栏找到编辑选项下的快捷键菜单，单击后就会弹出设置界面。第二种方法，打开PR后，我们直接使用快捷键Ctrl+Alt+K后，也会弹出设置界面。

打开快捷键界面后在搜索框里我们直接输入想要添加的快捷键功能，然后在空白处单击鼠标，就会产生一个框，按下要设置的快捷键，最后点击确定保存设置，这样就快捷键就设置好了。

PR视频特效

添加滤镜

首先就是滤镜的位置是在左下角的【效果】选项里面，如下图箭头指向所示：

里面的滤镜很多，可以选择自己喜欢的滤镜进行使用，如下图箭头指向所示：

然后，我们直接将滤镜拖拽到素材身上就可以进行使用了，如下图箭头指向所示：

调整滤镜的内部可调节参数，素材的效果就能实时预览。点击前面的【FX】可以进行滤镜效果的开启以及关闭，如下图箭头指向所示：

效果里面，除了视频滤镜，还有音频滤镜以及各种转场可用，如下图箭头指向所示：

添加字幕

在工具栏，点击文字工具；

使用文字工具点击视频，在文字框中输入字幕，就添加字幕成功了。

视频的删减

导入完素材之后我们将素材拖到右边，便能对视频素材进行编辑了（点击播放按钮可预览）。接下来我们讲一下视频内容的删减。

比如说：我们觉得某一段内容不好，想把它删掉，那么该怎么办呢？在PR中我们有两种方法：

1、选择左侧工具栏的刻刀工具，在想要删去内容的两头进行点击，然后即可将商品分割成三段，可从中选择自己不想要的内容；

2、直接从末尾拖动即可（只能对开头或末尾内容进行删减）。

视频的倍速播放

视频的倍速播放在PR中很容易就能实现了：右键-速度/持续时间。选择速度（百分比，如200%就是两倍速），点击【倒放速度】就能倒放了。

音乐淡出效果

添加音乐的方法和添加视频的方法一样，导入以后拖动到右边就可以了。删减运用上述方法也是可以完成的。

音乐淡出的效果：

添加完音频后，拉开轨道，点击左下的小按钮，选择：轨道关键帧-音量；

选择：添加-移除关键帧按钮，在想要淡入、淡出的地方添加关键帧，即可对音量进行修改，完成淡入、淡出的效果；

如果你是第一次使用PR并且佩戴耳机的话，要到PR的【编辑】-【首选项】-【音频硬件】里的【默认输出】修改输出设备为：耳机。

音效增益

打开PR软件，将音频导入进去，拖到右下方的【时间轴】操作区；

右击鼠标，点击音轨，在出现的选项中点击【音频增益】；

在【音频增益】页面，选择【将增益设置为】；

输入合适的音频值，负数表示减少，完成后点击【确定】。

视频转场

首先打开电脑上的PR，打开项目文件后，选择右侧的【效果】面板，效果面板中有音频效果、音频过渡，视频效果、视频过渡；

鼠标点开【视频过渡】，其中有7类转场特效，我们这里点击进入【溶解】，选择【溶解】下的【交叉溶解】；

选择【交叉溶解】拖动到视频上，可以看到我们可以将转场放置到视频末尾，视频开头或两段视频中间，这里选择【视频中间】；

插入完成后我们双击此转场，进入【设置过渡持续时间】，拖动蓝色字体即可增加或减少时间。

成品：

%3Chowto_content%3E[{"type":"paragraph","attrs":{"is_abstract":true},"children":[{"type":"text","text":"Adobe Premiere是Adobe家族的一款剪辑软件，它给我的感觉就是入门快、功能强大，无论是对于新手还是专业人士，","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"在大部分情况下都是很友好的。","id":""}],"text":"","id":"doxcnnUr3YSjnT8yfxx1JfEA7Zb"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"认识PR","id":""}],"text":"","id":"doxcnR9osBfOEgCeh8vdA4Ct8Fh"},{"type":"paragraph","children":[{"type":"text","text":"Pr全称Adobe Premiere，是Adobe公司开发的一款视频剪辑\u0026编辑软件。主要用于视频采集、视频剪辑、调色、添加字幕、编辑音频、渲染输出。","id":""}],"text":"","id":"doxcnfu2kKYWNcR9F9gXR89OfKc"},{"type":"paragraph","children":[{"type":"text","text":"Premiere提供了采集、剪辑、调色、美化音频、字幕添加、输出、DVD刻录的一整套流程，并和其他Adobe软件高效集成，使用户足以完成在编辑、制作、工作流上遇到的所有挑战，满足用户创建高质量作品的要求。","id":""}],"text":"","id":"doxcnGdxJRqeFSHIHkd0wQ1OdRh"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"下载","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"软件","id":""}],"text":"","id":"doxcnCA761mSEd5B7vAyPMd0VGf"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"Adobe官网下载","id":""}],"text":"","id":"doxcnzSSrQuvfKbJ7l1wKI5bu3b"},{"type":"paragraph","children":[{"type":"text","text":"进入","id":""},{"type":"text","text":"Adobe官网","id":""},{"type":"text","text":"进行下载","id":""},{"type":"external_link","attrs":{"url":"https://www.adobe.com/cn/products/premiere.html"},"children":[{"type":"text","text":"https://www.adobe.com/cn/products/premiere.html","id":""}],"text":"","id":""}],"text":"","id":"doxcnwti8cvwC1haSG5SXQBwwRh"},{"type":"image","attrs":{"height":633,"note":[{"type":"text","text":"Adobe官网下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/7e6b7bfcc34c4c8a9c996b5fa0bd03f0","width":1322},"text":"","id":"doxcnQe0om8qMyUuEwVGHMH7Iyg"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"其他网页下载","id":""}],"text":"","id":"doxcnQ21XJ1g4bvctZoIXy7ejee"},{"type":"paragraph","children":[{"type":"text","text":"1、打开浏览器","id":""},{"type":"text","text":"今日头条","id":""},{"type":"text","text":"搜索","id":""},{"type":"text","text":"3D溜溜网","id":""},{"type":"text","text":"，进入官网","id":""}],"text":"","id":"doxcnXaYcJyllKSUOisUga7XDwg"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"其他网页下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b145b54cbb734439b6d4a0a4467ab438","width":900},"text":"","id":"doxcnzI3dVQG57bgdfaQUMA04jQ"},{"type":"paragraph","children":[{"type":"text","text":"2、","id":""},{"type":"text","text":"打开浏览器搜索3D溜溜网，进入官网，点击上面【","id":""},{"type":"text","marks":[{"type":"strong"}],"text":"···","id":""},{"type":"text","text":"】三个点之后选择【软件插件】里的【羽兔网软件下载】","id":""}],"text":"","id":"doxcnIVPCifz0IRzsBqiEjOfiIf"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"其他网页下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/a1638af674e54aad9efb8a646ca04c63","width":900},"text":"","id":"doxcnqZpvG9QFK35bzCrca5Dv2I"},{"type":"paragraph","children":[{"type":"text","text":"3、选择【常用软件】里的【视频制作】","id":""}],"text":"","id":"doxcnzRohoZnbSkxA1A8Zk8b27e"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"其他网页下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/74b9227188ff4aeca2b984c9e8d8a586","width":900},"text":"","id":"doxcn2OVEbs5EMbBygZUOujtPLb"},{"type":"paragraph","children":[{"type":"text","text":"4","id":""},{"type":"text","text":"、","id":""},{"type":"text","text":"向下滑，在下面找到","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"2018版本的进行【软件下载】，里面还有其他版本，这里选择的是适配win7的。","id":""}],"text":"","id":"doxcnCtQ1MsKtZgOu5E1P57TWNb"},{"type":"image","attrs":{"height":542,"note":[{"type":"text","text":"其他网页下载","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/5fef322678914f64998900ac60bcb079","width":884},"text":"","id":"doxcn4us8I4k0Sm8SgPZJfjoJKc"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"PR窗口介绍","id":""}],"text":"","id":"doxcn96P6ooUhkBHVMi4KpcrGbh"},{"type":"paragraph","children":[{"type":"text","text":"Premiere软件由菜单栏、常用工具栏、时间轴、侧边面板栏（组件窗口）组成。主工作区有素材（项目）管理窗口、素材预览窗口、视频监视器窗口、时间轴窗口、调音台窗口、调色窗口等。","id":""}],"text":"","id":"doxcnCxCHkBbfrsDYRvzLAYfj3f"},{"type":"image","attrs":{"height":1017,"note":[{"type":"text","text":"PR窗口介绍","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/8ab86a1a8f924483a7bab52a67f43204","width":1920},"text":"","id":"doxcnPfVPkaL8cXxoC9iyybhMvg"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"菜单栏","id":""}],"text":"","id":"doxcnjGGp8htd1KmYO4wrdQHtHe"},{"type":"paragraph","children":[{"type":"text","text":"菜单栏可以说是整个软件的功能导图，为软件中大多数功能提供了菜单入口，例如","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"软件","id":""},{"type":"text","text":"中的绝大多数功能在对应的菜单栏中都可以找到。","id":""}],"text":"","id":"doxcngvQ04rFV59VIcbpf84JoDg"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"菜单栏","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/e7e280f0e60f4c0fb2eb62b1e3e9ee03","width":900},"text":"","id":"doxcn9E6osoDW58yS9TGvBUA2de"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"功能窗口切换区域:(组件、编辑、颜色、效果、音频、字幕、库......)","id":""}],"text":"","id":"doxcnFy98LpdkaloJb0N5Zu5dRe"},{"type":"paragraph","children":[{"type":"text","text":"功能窗口切换区域是软件为剪辑、调色、音频、字幕等不同功能定义的界面布局方案。点击对应的功能，软件会自动切换到使用该功能时的界面布局。","id":""}],"text":"","id":"doxcn5w4jrhGzO9gT01GJHYuf4A"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"功能窗口切换区域:(组件、编辑、颜色、效果、音频、字幕、库......)","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/76961e4b5e02455d9d5ec10414a19c20","width":900},"text":"","id":"doxcnJ6mEm9RKbr3equYoIc04He"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"源素材预览窗口","id":""}],"text":"","id":"doxcnO89UMHO3dwPheOMiS4VZ1c"},{"type":"paragraph","children":[{"type":"text","text":"源窗口主要是为项目面板中素材(视频、音频、图片)提供实时预览，双击项目面板中的素材即可在源窗口中进行播放预览。","id":""}],"text":"","id":"doxcnOhgjL2tJgFmTwxhUJSdmfg"},{"type":"image","attrs":{"height":786,"note":[{"type":"text","text":"源素材预览窗口","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/ad6e53be4b784562ac3d4e9946f02b29","width":1597},"text":"","id":"doxcneeeeeMaWaeo8wlkBBf96Nb"},{"type":"paragraph","children":[{"type":"text","marks":[{"type":"strong"}],"text":"节目监视窗口","id":""}],"text":"","id":"doxcngMAyEuYQ66iKU9mYWytjEc"},{"type":"paragraph","children":[{"type":"text","text":"节目窗口主要用于监视时间线上剪辑的画面，可以实时播放。","id":""}],"text":"","id":"doxcn9ceBAXnt86aWD826KpvfDg"},{"type":"image","attrs":{"height":784,"note":[{"type":"text","text":"源素材预览窗口","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/39ef4613ffa84d0aa454bc7961948a17","width":1600},"text":"","id":"doxcn6WYQCO2gMYc8DznazFhMiR"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"项目面板","id":""}],"text":"","id":"doxcngxUAPJkZkUzHVVEHQjW2Lh"},{"type":"paragraph","children":[{"type":"text","text":"项目面板主要是用于项目及素材的管理，我们导入到软件中的素材及新建的序列、字幕等素材全部都存放在项目面板中。","id":""}],"text":"","id":"doxcnASeSr9hL6bK3QktvtDCSMb"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"项目面板","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/7c245a5fcb97452aa3f2203f9c0735ab","width":900},"text":"","id":"doxcnR6iRLwn0tmmG4URSVSVeLh"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"时间线窗口","id":""}],"text":"","id":"doxcnUtKP5LGP3KfVP6LBwW9WP9"},{"type":"paragraph","children":[{"type":"text","text":"时间线窗口可以简单理解为剪辑工作台，我们对素材的剪辑工作全部都是在时间线面板中操作完成。时间线窗口又可分为视频轨道和音频轨道。","id":""}],"text":"","id":"doxcnpdbxGr0rTK904Q9ULz27Cg"},{"type":"image","attrs":{"height":380,"note":[{"type":"text","text":"时间线窗口","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/3f798b3817c949f7a35f9b0c899a62ff","width":1256},"text":"","id":"doxcnyq2gNAr2xMIqhwhENWhxVe"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"工具栏","id":""}],"text":"","id":"doxcnCfhsU1WYo6FqwJ5Q31VWSe"},{"type":"paragraph","children":[{"type":"text","text":"工具栏","id":""},{"type":"text","text":"集合了所有视频剪辑工具，当然有一些是辅助剪辑工具。","id":""}],"text":"","id":"doxcniQlwYEMO1YDYk9Qh8d8AQd"},{"type":"image","attrs":{"height":532,"note":[{"type":"text","text":"工具栏","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/1dd1d9e917ce4dac9222fb65f1cd00b1","width":809},"text":"","id":"doxcny4kMYakq00aou0bQ8yt4vf"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"选择工具（快捷键：V）","id":""}],"text":"","id":"doxcnICeCGuuEemYI4Ih4K7G5We"},{"type":"paragraph","children":[{"type":"text","text":"顾名思义，它的作用就是用来选择东西的，不过在有的时候它也会变为其它的形状，作用也随之改变。","id":""}],"text":"","id":"doxcnGUgmawWwwMEkYByjBJaJac"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"向前选择轨道工具（快捷键：A）","id":""}],"text":"","id":"doxcnAm4uO2aUiYwEySS0caMSEc"},{"type":"paragraph","children":[{"type":"text","text":"使用此工具可以选择该轨道上以后的所有素材，视音频链接在一起的则音频同时也被选中；按住Shift键可以变为多轨道选择工具，此时单头变为双头，即使是单独的声音（比如音效、音乐等）也会被同时选中。","id":""}],"text":"","id":"doxcncYeqIokoi6aW2lE5RngmAh"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"波纹编辑工具（快捷键：B）","id":""}],"text":"","id":"doxcnIqiKA0k8KauE9TFPpQzCkp"},{"type":"paragraph","children":[{"type":"text","text":"使用此工具可以改变一段素材的入点和出点，这段素材后面的会自动吸附上去，总长度发生改变。","id":""}],"text":"","id":"doxcnUyEi0McacUKSeSDseyEtGf"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"剃刀工具（快捷键：C）","id":""}],"text":"","id":"doxcnGC6Oo6ocI0qA0Y7g4jhMUb"},{"type":"paragraph","children":[{"type":"text","text":"pr中导入素材之后，利用剃刀工具切割开视频，视频就分开为多段了，可以分别剪辑切割后的每一段视频，包括删除、添加效果等。","id":""}],"text":"","id":"doxcneYsIMkoCq2e0YD18rVIRuc"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"外滑工具（快捷键：U）","id":""}],"text":"","id":"doxcnqusYGYsqyaG8Ibe6MTuTqh"},{"type":"paragraph","children":[{"type":"text","text":"作用于一段素材，用来同时改变此段素材的入点和出点。","id":""}],"text":"","id":"doxcnUsuKoWOoKikW4OewvCCyxd"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"钢笔工具（快捷键：P）","id":""}],"text":"","id":"doxcn0AOYYIYSE68S4XK6NVuLf0"},{"type":"paragraph","children":[{"type":"text","text":"这个工具和字幕中的钢笔工具是一样，主要用来绘制形状。选中此工具，在需要的位置点击一下确定起点，直接点其它位置可以绘制直线，而在点第二个点的同时按住鼠标不放并进行拖拽可以绘制曲线；它还有一个作用就是进行关键帧的选择。","id":""}],"text":"","id":"doxcnsySecm4kW22YMx0RHszAag"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"手形工具（快捷键：H）","id":""}],"text":"","id":"doxcnyeSuyU0qIeiOYrI27gWfrd"},{"type":"paragraph","children":[{"type":"text","text":"点击鼠标左键，在时间轴上拖动，移动时间轴上显示素材的位置。当程序监视器放大时。拖放程序监视器中的可移动显示区域以观察细节。","id":""}],"text":"","id":"doxcn6oeCUS44KOoSWKUiX7PPch"},{"type":"heading","attrs":{"level":3},"children":[{"type":"text","text":"文字工具（快捷键：T）","id":""}],"text":"","id":"doxcnGK4oYqI6UgckAl7vGXrLGd"},{"type":"paragraph","children":[{"type":"text","text":"文字工具即在画面中输入我们想要的文字。","id":""}],"text":"","id":"doxcnoYck2WM6cqWgJ8k4KM3jhV"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"效果面板","id":""}],"text":"","id":"doxcndcHB5AXuSWSdXrrKYuM9Uc"},{"type":"paragraph","children":[{"type":"text","text":"效果面板集合了很多视频和音频效果控件，对视频或者音频添加模糊及转场等效果时，需要在效果面板中找到对应的效果控件然后添加到时间线上的剪辑。","id":""}],"text":"","id":"doxcnXoJPdkjz1fuITZzCC8RUVg"},{"type":"image","attrs":{"height":536,"note":[{"type":"text","text":"效果面板","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/5e54a2bca44c41e0a2a74588702aeba2","width":954},"text":"","id":"doxcnRhiSwR41fhlP9cK4AEqd5b"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"效果控件面板","id":""}],"text":"","id":"doxcndBvaSPSPa11yuh8YcXCpCe"},{"type":"paragraph","children":[{"type":"text","text":"效果控件面板是对已经添加到素材上的效果进行参数调节的窗口。","id":""}],"text":"","id":"doxcn5JKSFbhUJbguSSFyewO8pf"},{"type":"image","attrs":{"height":530,"note":[{"type":"text","text":"效果控件面板","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/15da3c9a587a475c92305269cdb1adca","width":955},"text":"","id":"doxcnzrF0kx5BKtbQYhbr62k4v5"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"音轨混合器窗口","id":""}],"text":"","id":"doxcnjlvgJGZFs0gcONXFGWJ9wh"},{"type":"paragraph","children":[{"type":"text","text":"对音频进行声道和音量调节的窗口，当然也可以通过这个窗口进行现场录音。","id":""}],"text":"","id":"doxcnwK12k1tpwhzSyjZeWqUjze"},{"type":"image","attrs":{"height":522,"note":[{"type":"text","text":"音轨混合器窗口","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/ef382452d14a413ebf48b82c65134fe8","width":949},"text":"","id":"doxcn9JH8bQtuRQdQa6ZX3PmFcb"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"PR","id":""},{"type":"text","text":"剪辑教程","id":""}],"text":"","id":"doxcnuqJi0dqQBGIbK8KWhYqFoK"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"创建项目","id":""}],"text":"","id":"doxcnKoAcwkqQAwkGIFFMwIy2we"},{"type":"paragraph","children":[{"type":"text","text":"首先新建项目，暂存盘里的地址栏跟项目一样就可以。","id":""}],"text":"","id":"doxcny2wh5HNVQfgSoiQpvBBwzb"},{"type":"image","attrs":{"height":826,"note":[{"type":"text","text":"创建项目","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/432f935f804b4732ab8d4c9c7cd9a885","width":1886},"text":"","id":"doxcngxZppxiRO0GuAB1EPBf37f"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"新建序列","id":""}],"text":"","id":"doxcnWws8eKuMwy6SKrviovcitb"},{"type":"paragraph","children":[{"type":"text","text":"新建序列，选择1080p25，点击确定，就建立了一个时间线。","id":""}],"text":"","id":"doxcnc31LbnWEScbaFMcpQXJk0d"},{"type":"image","attrs":{"height":830,"note":[{"type":"text","text":"新建序列","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/105fa365183b4c19961cfce139d443a7","width":1524},"text":"","id":"doxcnJPBEgWXM1Oo7LdNHkE3jeh"},{"type":"paragraph","children":[{"type":"text","text":"一般的剪辑软件里边都有现成的预设，只要知道这个尺寸就行，高清格式选择1080P或者720P都行。","id":""}],"text":"","id":"doxcnGOugWuEmk6c0yGQ2fO7FMh"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"导入素材","id":""}],"text":"","id":"doxcniCmOuEuSIuEguAGewib6Rc"},{"type":"paragraph","children":[{"type":"text","text":"在项目列表双击，找到我们的素材，按住shift一块儿导入，导入之后可以对素材进行分类，让我们可以看的更仔细一些。（养成一个好的分类习惯，有助于提高我们工程的有趣性和效率，以后打包工程的整理都非常的有好处）","id":""},{"type":"text","text":"。","id":""}],"text":"","id":"doxcnk5yCypGym40Cxh0DELYSEd"},{"type":"image","attrs":{"height":814,"note":[{"type":"text","text":"导入素材","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/4c8b826e6ef645fe8d808c1027bb423b","width":1520},"text":"","id":"doxcno0yPM0zk4nDB0X9KRKcMpd"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"拖入时间线","id":""}],"text":"","id":"doxcnyUUgEwieskWaqyQ7nCc0Rc"},{"type":"paragraph","children":[{"type":"text","text":"素材分类好之后，把视频音频素材按住shift一起都拖拽到时间线里。","id":""}],"text":"","id":"doxcnGoGmlGHRPGbZf3zwSxMzRh"},{"type":"image","attrs":{"height":808,"note":[{"type":"text","text":"拖入时间线","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/4c9467a1050a4461adc0f1e10de21663","width":1528},"text":"","id":"doxcn9erLjtllccME2Idto2GELd"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"设置比例","id":""}],"text":"","id":"doxcnM4CKmOK4WgAOVNJdYgZFys"},{"type":"paragraph","children":[{"type":"text","text":"发现视频素材的大小不一，我们调整视频整体比例大小。找到信息，","id":""},{"type":"text","text":"看见比例为6","id":""},{"type":"text","text":"4","id":""},{"type":"text","text":"0*360，在我们新建的时候不是这个比例，我们在序列里进行更改设置为6","id":""},{"type":"text","text":"4","id":""},{"type":"text","text":"0*360","id":""},{"type":"text","text":"，这样时间线就跟我们相匹配了。","id":""}],"text":"","id":"doxcn4KIYjg1xM36XQmgGHykR3c"},{"type":"image","attrs":{"height":808,"note":[{"type":"text","text":"设置比例","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/131ff2c5005445f3a1e4a17ae2f6f650","width":1518},"text":"","id":"doxcnKUk2BYu4JstbqFdols79cb"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"编辑视频","id":""}],"text":"","id":"doxcnCcsm4gI60wckb24kwmyWz4"},{"type":"paragraph","children":[{"type":"text","text":"导入素材之后，我们开始对视频进行剪辑。","id":""}],"text":"","id":"doxcncQyBiaEavZMZ0m2C005cmb"},{"type":"image","attrs":{"height":826,"note":[{"type":"text","text":"编辑视频","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/ed67569175f24191902482a756f6339a","width":1530},"text":"","id":"doxcnJvZVar1xWCDLDzQAdiffEd"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"添加效果","id":""}],"text":"","id":"doxcnoKMu424sGUSKWCsKZMnpWh"},{"type":"paragraph","children":[{"type":"text","text":"添加效果，让视频看起来更流畅。","id":""}],"text":"","id":"doxcnqMRavgMsQJUgdnA3PcYJ5b"},{"type":"image","attrs":{"height":806,"note":[{"type":"text","text":"添加效果","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/25b40c8a46f0450aa8c42867c473f94c","width":1514},"text":"","id":"doxcnNpK3tlTugMD6cqpAL8ocrg"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"添加字幕","id":""}],"text":"","id":"doxcnUWYyW6Sq4UUSwfRRDxV9Ef"},{"type":"paragraph","children":[{"type":"text","text":"添加结尾字幕。","id":""}],"text":"","id":"doxcntoZlf63VbJrR7JHsvHqnYc"},{"type":"image","attrs":{"height":812,"note":[{"type":"text","text":"添加字幕","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/8a2d6d1c697046a2a4c0ebf51b5f023c","width":1534},"text":"","id":"doxcnwK7GZc13stRLPYlZjAOXPf"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"导出","id":""}],"text":"","id":"doxcnaoGK6mE6qscUW0o4rxYm5f"},{"type":"paragraph","children":[{"type":"text","text":"剪辑完成，导出成品。 ","id":""}],"text":"","id":"doxcnpvU2bBwgmLhAKSzXeWoA9c"},{"type":"image","attrs":{"height":828,"note":[{"type":"text","text":"导出","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/d8b0e4930be64ad8a93fefc76f7744d0","width":1530},"text":"","id":"doxcnq9OeQTXIaqIG5FhluqlHUD"},{"type":"paragraph","children":[{"type":"text","text":"PR导出格式一般用MOV、mp4、AVI等等","id":""},{"type":"text","text":"。PR输出视频的时候，要求不一样，输出的格式的就不一样。因为没有统一的标准，要根据需求和目的才能定什么是合适的。","id":""}],"text":"","id":"doxcn8WUWW4Q0eoOAoiU3zHiipb"},{"type":"paragraph","children":[{"type":"text","text":"1、如果想输出文件后继续进行编辑，一般推荐输出MOV。","id":""}],"text":"","id":"doxcnuacmSYEOuG0CQSl2C0Y0qb"},{"type":"paragraph","children":[{"type":"text","text":"2、如果输出文件后直接就要观看，或传到视频网站。推荐输出H.264，即mp4。","id":""}],"text":"","id":"doxcncCOumAIkcS2Kon4eEwzPKb"},{"type":"paragraph","children":[{"type":"text","text":"3、如果输出文件给电视台标清播出，就输出AVI格式。","id":""}],"text":"","id":"doxcn2OiGGiWU0E2koz3Im8My3d"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"成品","id":""}],"text":"","id":"doxcnikOQyOW066WI4HoGSoszMg"},{"type":"paragraph","children":[{"type":"text","text":"下面这张是成品","id":""}],"text":"","id":"doxcnnrlcxwJTKBYs8oNNf0tjhf"},{"type":"image","attrs":{"height":230,"note":[{"type":"text","text":"成品","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/d965685734594664adab5079a2ee244e","width":410},"text":"","id":"doxcndu3hxY8vMgwzvXhrog4sLh"},{"type":"paragraph","children":[{"type":"text","text":"这里用的是","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"2018版本","id":""}],"text":"","id":"doxcnraknSYHmS9h9PBNzy1Ecrf"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"PR","id":""},{"type":"text","text":"基础快捷键","id":""}],"text":"","id":"doxcnAOymG2QW6kOgew4XvrOBYd"},{"type":"paragraph","children":[{"type":"text","text":"1、按i可以设置入点，O可以设置出点。","id":""}],"text":"","id":"doxcnWMuG4kioCUs6gQDBPutVMv"},{"type":"paragraph","children":[{"type":"text","text":"2、Shift+delete键可以删除视频同时，把视频之间的间隙去掉；Ctrl+Z撤销。","id":""}],"text":"","id":"doxcnOUUwCqSeA66oGI5CoBuWHf"},{"type":"paragraph","children":[{"type":"text","text":"3、向前选择轨道工具（A）和链接选择项的结合使用可以删除选择点后面的视频和音频","id":""}],"text":"","id":"doxcn8QaSq4gmMwOyKO5n6TxBbg"},{"type":"paragraph","children":[{"type":"text","text":"4、向前选择轨道工具（A）和取消链接选择项的结合使用按shift键可单独删除视频，保留音频。","id":""}],"text":"","id":"doxcneKyMYoQeeu84KU2iYrjLbh"},{"type":"paragraph","children":[{"type":"text","text":"5、按Q键可删除剪辑的开始，按W键可删除剪辑的结尾，但是它们会从每个音轨中删除内容，如果有多层音轨，这个快捷键就不适用，可以通过锁定音频轨道来避免音频被删除。","id":""}],"text":"","id":"doxcneoqqGoAqemIkEq2qzcuYqb"},{"type":"paragraph","children":[{"type":"text","text":"6、按光标键→，按一下前进一帧，按Shift键+光标键，一下会前进5帧。","id":""}],"text":"","id":"doxcnKs6yOQIeAG4Ww11XowX1Pb"},{"type":"paragraph","children":[{"type":"text","text":"7、alt+拖动素材=复制","id":""}],"text":"","id":"doxcnAEsAIS8ssciik3RT8Xb00g"},{"type":"paragraph","children":[{"type":"text","text":"常用的快捷键如下：","id":""}],"text":"","id":"doxcn0g0AaYCeM4KSmgSKkPjCCg"},{"type":"imageList","children":[{"type":"image","attrs":{"height":601,"note":[{"type":"text","text":"PR","id":""},{"type":"text","text":"基础快捷键","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/0db905b0b6104d11aed544b39283e07d","width":901},"text":"","id":"doxcnM28y2m2AUYsSiyCX5SWQ8g"},{"type":"image","attrs":{"height":601,"note":[{"type":"text","text":"PR","id":""},{"type":"text","text":"基础快捷键","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/274dfa02812b4424973c026536d6d33f","width":901},"text":"","id":"doxcnU6mK8cOMWw24GCG9yLRbch"}],"text":"","id":"doxcn0IoogSg4KmAiSwAUjCoB6c"},{"type":"paragraph","children":[{"type":"text","text":"注：如果自己不适应默认的快捷键可以在","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"界面快捷键设置修改，步骤如下：","id":""}],"text":"","id":"doxcn0IoogSg4KmAiSwAUjCoB6c"},{"type":"paragraph","children":[{"type":"text","text":"打开快捷键界面有两种方法：第一种方法，打开","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"后，在菜单栏找到编辑选项下的快捷键菜单，单击后就会弹出设置界面。第二种方法，打开PR后，我们直接使用快捷键Ctrl+Alt+K后，也会弹出设置界面","id":""},{"type":"text","text":"。","id":""}],"text":"","id":"doxcnmE8gQEcESwcaOsVIb2KNyc"},{"type":"image","attrs":{"height":1013,"note":[{"type":"text","text":"PR","id":""},{"type":"text","text":"基础快捷键","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/17906eb76da6474bbe33762039398065","width":1889},"text":"","id":"doxcn8WU68WuCgegUw95zwxC74c"},{"type":"paragraph","children":[{"type":"text","text":"打开快捷键界面后在搜索框里我们直接输入想要添加的快捷键功能，然后在空白处单击鼠标，就会产生一个框，按下要设置的快捷键，最后点击确定保存设置，这样就快捷键就设置好了。","id":""}],"text":"","id":"doxcn2sI2ays2C82CyY9ZEtLplh"},{"type":"heading","attrs":{"level":1},"children":[{"type":"text","text":"PR视频特效","id":""}],"text":"","id":"doxcnKss2WSMgGAyqglCfF5Ay5Y"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"添加滤镜","id":""}],"text":"","id":"doxcngGyEQsy0oWYCSHLOLZhKq6"},{"type":"paragraph","children":[{"type":"text","text":"首先就是滤镜的位置是在左下角的【效果】选项里面，如下图箭头指向所示：","id":""}],"text":"","id":"doxcnk0Aygq2ouuiKKgup0xoU3e"},{"type":"image","attrs":{"height":400,"note":[{"type":"text","text":"添加滤镜","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/51079625769a414c93252256e1f2c0b8","width":600},"text":"","id":"doxcnKA2WW2AuOOWEi6tc2KllJc"},{"type":"paragraph","children":[{"type":"text","text":"里面的滤镜很多，可以选择自己喜欢的滤镜进行使用，如下图箭头指向所示：","id":""}],"text":"","id":"doxcnE4e8qyUAYsmeiQThJV1Yne"},{"type":"image","attrs":{"height":400,"note":[{"type":"text","text":"添加滤镜","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/7a13f848b61b4550bff09e7b22dbe854","width":600},"text":"","id":"doxcnYkay6yQKQyKm4a8ayDNQAb"},{"type":"paragraph","children":[{"type":"text","text":"然后，我们直接将滤镜拖拽到素材身上就可以进行使用了，如下图箭头指向所示：","id":""}],"text":"","id":"doxcnWiI8yIkKA4wqUPtTRzyBOh"},{"type":"image","attrs":{"height":400,"note":[{"type":"text","text":"添加滤镜","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/2ff7ee3fed3846af8a583f307f67e9a6","width":600},"text":"","id":"doxcnSAssKawKoCMCszoddbGvZg"},{"type":"paragraph","children":[{"type":"text","text":"调整滤镜的内部可调节参数，素材的效果就能实时预览。点击前面的【FX】可以进行滤镜效果的开启以及关闭，如下图箭头指向所示：","id":""}],"text":"","id":"doxcnGykOGkS0cgQKOolX4pyTdg"},{"type":"image","attrs":{"height":400,"note":[{"type":"text","text":"添加滤镜","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b751a5701d8b4198a844e551507499da","width":600},"text":"","id":"doxcnkiawiQmaimmSa0CzvCBWBg"},{"type":"paragraph","children":[{"type":"text","text":"效果里面，除了视频滤镜，还有音频滤镜以及各种转场可用，如下图箭头指向所示：","id":""}],"text":"","id":"doxcnegGIGWqaQAuYCs6fSYWpZc"},{"type":"image","attrs":{"height":357,"note":[{"type":"text","text":"添加滤镜","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b9a552a07b014a7db30aa08474249ea3","width":600},"text":"","id":"doxcnoOU4wi8cSm60SQEj9cj0Yd"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"添加字幕","id":""}],"text":"","id":"doxcn0Gs8CWiIcu0wYDPMo3NlIc"},{"type":"paragraph","children":[{"type":"text","text":"在工具栏，点击文字工具","id":""},{"type":"text","text":"；","id":""}],"text":"","id":"doxcnukksIAEauYiAM7i4I4XBDd"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"添加字幕","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/2034c9734f224e84bf843ab235d16da7","width":900},"text":"","id":"doxcnMqKWkuuiwoauaYd4U2ViYc"},{"type":"paragraph","children":[{"type":"text","text":"使用文字工具点击视频，在文字框中输入字幕，就添加字幕成功了。","id":""}],"text":"","id":"doxcnMESgYciUagAIymARggiZrh"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"添加字幕","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b6ffeb7be79d4dc4a35ddb86f3438778","width":900},"text":"","id":"doxcnuaOmg4CUG2kuGOGZHozSXc"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"视频的删减","id":""}],"text":"","id":"doxcn4EQiAEQEWOYIUfxocM8LOf"},{"type":"paragraph","children":[{"type":"text","text":"导入完素材之后我们将素材拖到右边，便能对视频素材进行编辑了（点击播放按钮可预览）。接下来我们讲一下视频内容的删减。","id":""}],"text":"","id":"doxcny2s2YyyGWEoS6RNHYG0uMb"},{"type":"image","attrs":{"height":1655,"note":[{"type":"text","text":"视频的删减","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/e601b0a8fcf14b15bc92b5d8a3949451","width":2736},"text":"","id":"doxcnSC0SKeyYwaiCcHCUDURHQc"},{"type":"paragraph","children":[{"type":"text","text":"比如说：我们觉得某一段内容不好，想把它删掉，那么该怎么办呢？在P","id":""},{"type":"text","text":"R","id":""},{"type":"text","text":"中我们有两种方法：","id":""}],"text":"","id":"doxcnawoQacWYm6qAW2pWlOkLof"},{"type":"paragraph","children":[{"type":"text","text":"1、选择左侧工具栏的刻刀工具，在想要删去内容的两头进行点击，然后即可将商品分割成三段，可从中选择自己不想要的内容","id":""},{"type":"text","text":"；","id":""}],"text":"","id":"doxcnKi8MUmqyIuioAnYUH03S3e"},{"type":"paragraph","children":[{"type":"text","text":"2、直接从末尾拖动即可（只能对开头或末尾内容进行删减）","id":""},{"type":"text","text":"。","id":""}],"text":"","id":"doxcnkgSOmkUgo6KUMpgJhMn03Z"},{"type":"imageList","children":[{"type":"image","attrs":{"height":639,"note":[{"type":"text","text":"视频的删减","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/cdc26bc822224a6bac09e42ed46157d5","width":1778},"text":"","id":"doxcnuwWikwUcIgO22JY3aoS7dg"},{"type":"image","attrs":{"height":1505,"note":[{"type":"text","text":"视频的删减","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/874a8ed6aaf9480ab47d4bb36ae2af02","width":2711},"text":"","id":"doxcnWqOCaCiio0iYszMjpLQ01f"}],"text":"","id":"doxcnMYm4OcEoUEGK6DcpCe9Sfe"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"视频的倍速播放","id":""}],"text":"","id":"doxcnMYm4OcEoUEGK6DcpCe9Sfe"},{"type":"paragraph","children":[{"type":"text","text":"视频的倍速播放在P","id":""},{"type":"text","text":"R","id":""},{"type":"text","text":"中很容易就能实现了：右键-速度/持续时间。选择速度（百分比，如200%就是两倍速），点击","id":""},{"type":"text","text":"【","id":""},{"type":"text","text":"倒放速度】就能倒放了。","id":""}],"text":"","id":"doxcn2weOsSGGuy6CknqwtBPqjc"},{"type":"image","attrs":{"height":1524,"note":[{"type":"text","text":"视频的倍速播放","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/92ef2e00c06f4f638a9bd9fb49e44b77","width":2712},"text":"","id":"doxcnuMO0Kqu6ieWgkp1OyVyZOe"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"音乐淡出效果","id":""}],"text":"","id":"doxcnquEaO6s8KUYK4s1P17lp5e"},{"type":"paragraph","children":[{"type":"text","text":"添加音乐的方法和添加视频的方法一样，导入以后拖动到右边就可以了。删减运用上述方法也是可以完成的。","id":""}],"text":"","id":"doxcnqCsII4ek2WCUKuZYa4J2yc"},{"type":"paragraph","children":[{"type":"text","text":"音乐淡出的效果：","id":""}],"text":"","id":"doxcnCSiM8eeOkqMYYJJgdc3zpe"},{"type":"paragraph","children":[{"type":"text","text":"添加完音频后，拉开轨道，点击左下的小按钮，选择：轨道关键帧-音量","id":""},{"type":"text","text":"；","id":""}],"text":"","id":"doxcngkSgga8WCYAMsfvboStI1r"},{"type":"image","attrs":{"height":1651,"note":[{"type":"text","text":"音乐淡出效果","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/45fb404f013041ebac46affc65ab23bd","width":2736},"text":"","id":"doxcnqC82ga0ESE4geehPPuocqg"},{"type":"paragraph","children":[{"type":"text","text":"选择：添加-移除关键帧按钮，在想要淡入、淡出的地方添加关键帧，即可对音量进行修改，完成淡入、淡出的效果","id":""},{"type":"text","text":"；","id":""}],"text":"","id":"doxcnciWIMWggKMO4qmo0LWnz4e"},{"type":"image","attrs":{"height":560,"note":[{"type":"text","text":"音乐淡出效果","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/fa051e786ae74574b738dcfcec880306","width":2537},"text":"","id":"doxcnCOGUaqgwcWQ6spzhqzcHXd"},{"type":"paragraph","children":[{"type":"text","text":"如果你是第一次使用P","id":""},{"type":"text","text":"R","id":""},{"type":"text","text":"并且佩戴耳机的话，要到P","id":""},{"type":"text","text":"R","id":""},{"type":"text","text":"的","id":""},{"type":"text","text":"【","id":""},{"type":"text","text":"编辑】-【首选项】-【音频硬件】里的【默认输出】修改输出设备为：耳机。","id":""}],"text":"","id":"doxcnmwk28QWC6gkykdjJcdeAKg"},{"type":"image","attrs":{"height":1161,"note":[{"type":"text","text":"音乐淡出效果","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/c7590bd586ea4efd8f6bc7d57343d106","width":1521},"text":"","id":"doxcniye8EkyoG8EgUPidM1yTZM"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"音效增益","id":""}],"text":"","id":"doxcnqmosymc0OW0Yo5ZI26sCaf"},{"type":"paragraph","children":[{"type":"text","text":"打开PR软件，将音频导入进去，拖到右下方的","id":""},{"type":"text","text":"【时间轴】","id":""},{"type":"text","text":"操作区","id":""},{"type":"text","text":"；","id":""}],"text":"","id":"doxcna802UygmWaEeEzpb4xHCSc"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"音效增益","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/b0f21fbea4e141348d0a813c206312a8","width":900},"text":"","id":"doxcnCgwKW6QCakeQ23k8cMiTmh"},{"type":"paragraph","children":[{"type":"text","text":"右击鼠标，点击音轨，在出现的选项中点击","id":""},{"type":"text","text":"【音频增益】；","id":""}],"text":"","id":"doxcn2c0qiCKOeiI8oZ8bDy3EQg"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"音效增益","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/0cea1af410a84e8f812a9dea03b159d8","width":900},"text":"","id":"doxcn2AMYac6qCIsYA52uYmmjDg"},{"type":"paragraph","children":[{"type":"text","text":"在","id":""},{"type":"text","text":"【音频增益】","id":""},{"type":"text","text":"页面，选择","id":""},{"type":"text","text":"【将增益设置为】；","id":""}],"text":"","id":"doxcnOQIkQ8O86Qg4cxWF0amyZb"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"音效增益","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/fa8cd3e6aa4b40bebc6cac6f7990b9dd","width":900},"text":"","id":"doxcnAOcIYsoeAWuWWSM57mLc1e"},{"type":"paragraph","children":[{"type":"text","text":"输入合适的音频值，负数表示减少，完成后点击","id":""},{"type":"text","text":"【确定】","id":""},{"type":"text","text":"。","id":""}],"text":"","id":"doxcnCUAcWciGi2UeO8XAiLVBtc"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"音效增益","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/89365811d08349dc96088372736c5780","width":900},"text":"","id":"doxcn4UUYsyGwWiYA2CKYvb4gmb"},{"type":"heading","attrs":{"level":2},"children":[{"type":"text","text":"视频转场","id":""}],"text":"","id":"doxcnG4sysssKueIQuQFvufWYgc"},{"type":"paragraph","children":[{"type":"text","text":"首先打开电脑上的","id":""},{"type":"text","text":"PR","id":""},{"type":"text","text":"，打开项目文件后，选择右侧的【效果】面板，效果面板中有","id":""},{"type":"text","text":"音频效果、音频过渡，视频效果、视频过渡；","id":""}],"text":"","id":"doxcnmqwKcuQAwwW02ZoMGeRJfd"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"视频转场","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/805c1e3f068240a4a431852c5062c3f7","width":900},"text":"","id":"doxcn4qiuQIqqUSCkeoVcRVlIoc"},{"type":"paragraph","children":[{"type":"text","text":"鼠标点开【视频过渡】，其中有7类转场特效，我们这里点击进入","id":""},{"type":"text","text":"【溶解】，选择【溶解】下的【交叉溶解】","id":""},{"type":"text","text":"；","id":""}],"text":"","id":"doxcnwM8K6A2siQKaugsk6Vb7Lc"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"视频转场","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/52958eec3d1a40c983dca8a9018c1959","width":900},"text":"","id":"doxcn48oGWGW2ai6ACIwKKf4lOf"},{"type":"paragraph","children":[{"type":"text","text":"选择【交叉溶解】拖动到视频上，可以看到我们可以将转场放置到视频末尾，视频开头或两段视频中间，这里选择【视频中间】；","id":""}],"text":"","id":"doxcno6ec4cC6owsAVXKytUtaBW"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"视频转场","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/69139b677d80441d802f694655663531","width":900},"text":"","id":"doxcnCaoocAM8q4uoEt2HiFTZId"},{"type":"paragraph","children":[{"type":"text","text":"插入完成后我们双击此转场，进入【设置过渡持续时间】，拖动蓝色字体即可增加或减少时间。","id":""}],"text":"","id":"doxcnSsi4oUGWcoOCYDAouBTKkc"},{"type":"image","attrs":{"height":600,"note":[{"type":"text","text":"视频转场","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/08eb0468190441c79f26cb603972683a","width":900},"text":"","id":"doxcn6mg2WQOg0uy2K0PegxzHwh"},{"type":"paragraph","children":[{"type":"text","text":"成品：","id":""}],"text":"","id":"doxcnI8oosUKcm8iSWyYQYc4JIe"},{"type":"image","attrs":{"height":598,"note":[{"type":"text","text":"视频转场","id":""}],"url":"https://p3.douyinpic.com/large/tos-cn-i-qvj2lq49k0/57979e729fd340639439a9f54646664d","width":898},"text":"","id":"doxcnMQa8QmoWa6IOQbFSZaTPtc"},{"type":"paragraph","children":[{"type":"text","text":"","id":""}],"text":"","id":"doxcnAMa8S486maiWEH5jMoxgne"}]%3C%2Fhowto_content%3E

8. var公式推导

原理：若有两个功率表读数为W1、W2，则P=W1+W2=UIcos(30°-φ）+UIcos(30°+φ)，其中φ为负载的阻抗角（即功率因数角）两个功率表读数与φ有下列关系：

当负载为纯电阻，φ=0，W1=W2，当负载功率因数cosφ=0.5，φ=±60°，将有一个功率表的读数为零；3当负载功率因数cosφ〈0.5，|φ|〉60°，则有一个功率表的读数为负值。

对称的三相功率可用一只单相功率表（瓦特表）测量，对于三线制非对称三相功率，要用两只单相功率表（或由两只单相功率表组成的二元三相功率表）测量，它们分别称为一瓦特表法和二瓦特表法。

一瓦特法只能用于三相对称电路的功率测试，三相功率之和等于单相功率读数的三倍。

二瓦特法采用两个功率表测量三相电路的三相总功率，三相功率之和等于两个单相功率表的读数之和。其理论依据是基尔霍夫电流定律，适用于三相三线制系统的三相功率测试，与系统是否对称无关。

扩展资料：

在三相电路中，三相负载吸收的复功率等于各项复功率之和。三相电路的瞬时功率为各相负载瞬时功率之和。在三相三线制电路中，不论对称与否，都可以使用两个功率表测量三相功率。即二瓦记法。

对称三相电源和对称三相负载相连接，称为对称三相电路（电源总是对称的）。三相电源与负载之间的连接方式有Y-Y,△-Y,△-△,Y-△连接方式。三相电路实际是正弦交流电路的一种特殊类型。

在三相电路中，三相负载的连接方式决定于负载每相的额定电压和电源的线电压。由于对称三相电路中每组的响应都是与激励同相序的对称量。所以，每相不但相电压有效值相等，相电流有效值也相等。而且每相电压与电流的相位差也相等。从而每相的有功功率相等。

顶一下

(0)

踩一下

(0)

相关评论

我要评论: 用户名: 验证码:

上一篇：excel中百分比(excel中百分比公式怎么输入)

下一篇：excel中sum是什么(excel表中sum是什么意思)