title: environment variable in not setting up in windows
body: <p>I am working on a project where I have to use fluent-ffmpeg npm package so I installed it with npm i fluent-ffmpeg and also I have downloaded ffmpeg application file from its website and set its path to environment variable but still I am getting this error</p>
  <pre><code>Error: Cannot find ffprobe
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\fluent-ffmpeg
  \lib\ffprobe.js:145:31
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\fluent-ffmpeg
  \lib\capabilities.js:194:9
      at wrapper (E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\asyn
  c\dist\async.js:271:20)
      at next (E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\async\d
  ist\async.js:5793:24)
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\async\dist\as
  ync.js:327:20
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\fluent-ffmpeg
  \lib\capabilities.js:186:13
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\fluent-ffmpeg
  \lib\capabilities.js:123:9
      at wrapper (E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\asyn
  c\dist\async.js:271:20)
      at next (E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\async\d
  ist\async.js:5793:24)
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\async\dist\as
  ync.js:327:20
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\fluent-ffmpeg
  \lib\capabilities.js:116:11
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\fluent-ffmpeg
  \lib\utils.js:223:16
      at F (E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\which\whic
  h.js:68:16)
      at E (E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\which\whic
  h.js:80:29)
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\which\which.j
  s:89:16
      at E:\intern data\youtube project\git-lolly\Lolly\server\node_modules\isexe\index.j
  s:42:5
  </code></pre>