How to add .Net Standard Nuget package into .Net 4.5 Framework Project?

I am trying to install https://www.nuget.org/packages/FFMpegCore/4.8.0#dependencies-body-tab (FFMpegCore) Nuget package in my .Net 4.5 Console project. But unfortunately, getting the below error

Error NU1202 Package FFMpegCore 4.8.0 is not compatible with net45 (.NETFramework,Version=v4.5) / win-x86. Package FFMpegCore 4.8.0 supports: netstandard2.0 (.NETStandard,Version=v2.0) ScreenCapturer C:\source\repos\ScreenCapturer\ScreenCapturer.csproj 1

Actually trying to stream .png images to FFmpeg input pipe & then convert them as a video.

P.S: Kind of new to this FFMpeg as well. So any help would be appreciated.