Gst-launch-1.0.exe and/or gst-inspect-1.0.exe cannot be found

I can’t find what I’m doing wrong. I have installed G-stream both the development and the runtime msi and it is stored in :

C:\gstreamer\1.0\mingw_x86_64

The G-streamer path is C:\gstreamer\1.0\mingw_x86_64\bin, as I found in the only two websites talking about this problem, only in japanese, but still my appium doctor complains that the packages aren’t there.
I’m not a superadvanced developer but I find the explanation somewhat lacking here. Can someone help me?

2 questions (ETA: I guess really 3):

  1. Are you following a tutorial? If so can you provide a link to it and say which step is failing?
  2. What error are you getting? Can you cut and paste it here?

Finally,

Can you post the explanation here? Maybe it will make sense to someone else.