Easy steps to install vapoursynth-imwri package on Mac
Package Information:
Application Name – vapoursynth-imwri
What is vapoursynth-imwri – Not Available for vapoursynth-imwri
Use of vapoursynth-imwri – VapourSynth filters – ImageMagick HDRI writer/reader
URL – http://www.vapoursynth.com
Installation Steps:
- Open Terminal using Spotlight search by pressing  <command+space>. Type terminal and hitEnterkey.
- Now, run following command to install homebrew (brew)
- Install vapoursynth-imwri using brew
brew install vapoursynth-imwri 

ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)" < /dev/null 2> /dev/null

vapoursynth-imwri is ready to use now!