Windows:NSSM: FFMpeg executable wasn't found

[baur]

Hi,
OS: Windows10
FFmpeg installed correctly

The app works if run via cmd.exe
If install the app as a service via NSSM I get the next error:

d:\app\Node\rest\rtsp-api-main\node_modules\rtsp-ffmpeg\lib\rtsp-ffmpeg.js:117
			throw new Error('FFMpeg executable wasn\'t found. Install this package and check FFMpeg.cmd property');
			^

Error: FFMpeg executable wasn't found. Install this package and check FFMpeg.cmd property
    at ChildProcess.<anonymous> (d:\app\Node\rest\rtsp-api-main\node_modules\rtsp-ffmpeg\lib\rtsp-ffmpeg.js:117:10)
    at ChildProcess.emit (events.js:315:20)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
    at onErrorNT (internal/child_process.js:465:16)
    at processTicksAndRejections (internal/process/task_queues.js:80:21)