WPF调用摄像头（借用WPFMediaKit库）

PyQt5安装后运行报错：This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.原因：没有添加环境变量解决：添加系统环境变量变量名：QT_QPA_PLATFORM_PLUGIN_PATH变量值：pyqt的plugins文件夹路径...

一、安装Python3.8并勾选添加环境变量以及pip二、win+R打开cmd 输入python显示如下，则安装配置成功三、cmd输入pip install opencv-python回车。安装成功后显示Successsfully installed【几种报错情况】1）SyntaxError: invalid syntax**解决：**不用进入python环境，直接打开cmd输pip install opencv-python2）下载速度慢，最终安装失败显示Read timed out尝

<Window x:Class="WpfApp2.MainWindow" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:d="http://schemas.microsoft.com/expression/blend/2008" xm