c#
// Sets current working directory to the .exe path
// string strExeFilePath = System.Reflection.Assembly.GetExecutingAssembly().Location;
string workingDir = AppContext.BaseDirectory;

// Check if ffmpeg directory exists in working directory
bool ffmpegDirExists = Directory.Exists("ffmpeg");

if (!ffmpegDirExists)
{
    Directory.CreateDirectory("ffmpeg");
}

// Check if tmp directory exists
bool tmpDirExists = Directory.Exists("tmp");

if (!tmpDirExists)
{
    Directory.CreateDirectory("tmp");
}

c#
// Sets current working directory to the .exe path
// string strExeFilePath = System.Reflection.Assembly.GetExecutingAssembly().Location;
string workingDir = AppContext.BaseDirectory;

// Check if ffmpeg directory exists in working directory
bool ffmpegDirExists = Directory.Exists("ffmpeg");

if (!ffmpegDirExists)
{
    Directory.CreateDirectory("ffmpeg");
}

// Check if tmp directory exists
bool tmpDirExists = Directory.Exists("tmp");

if (!tmpDirExists)
{
    Directory.CreateDirectory("tmp");
}