FFmpeg binaries not found when in PATH

[theodore-lheureux]

The program cannot find FFmpeg and FFprobe when they are in PATH.

Most likely due to CheckForBinaries() in mainwindow.cpp

void MainWindow::CheckForBinaries()
{
	if (IS_WINDOWS && (!QFile::exists("ffmpeg.exe") || !QFile::exists("ffprobe.exe"))) {
		Notify(Severity::Critical,
			 tr("Could not find ffmpeg binaries"),
			 tr("If compiling from source, this is not a bug. Please download ffmpeg.exe and ffprobe.exe and "
			    "place them into the binaries directory. Otherwise, there is an error with the release; please "
			    "report this as a bug."));
	}
}