How may I resolve 'NReco.VideoConverter.FFMpegException' error?

The following code:

string pathToVideoFile = "O:\\Byblioteka\\MAH01238.MP4"; var ffMpeg = new NReco.VideoConverter.FFMpegConverter(); ffMpeg.ConvertMedia(pathToVideoFile, "nowyplik.mp4", "Format.mp4");

Is resulting in the following error:

An unhandled exception of type 'NReco.VideoConverter.FFMpegException' occurred in NReco.VideoConverter.dll

Additional information: nowyplik.mp4: Invalid argument (exit code: 1)

How may I resolve this 'NReco.VideoConverter.FFMpegException' error?