Passing input to an exe file using C# console application

I want to convert my video file from mp4 to webm, using ffmpeg.exe got from ffmpeg.org.

I need to pass the input through a C# console application to ffmpeg.exe. so that it converts that file. Following is the code that I have tried:

 

using System;

using System.Diagnostics;

namespace ConsoleApplication2

{

class Program

{

static void Main(string[] args)

{

string input = @"C:\Users\bkiran\Downloads\Compressed\ffmpeg-4.0.2-win64-static\bin\mymp4.mp4";

string output = @"C:\Users\bkiran\Downloads\Compressed\ffmpeg-4.0.2-win64-static\bin\testwebmFromc.webm";

ProcessStartInfo processStartInfo = new ProcessStartInfo();

processStartInfo.FileName = @"C:\Users\bkiran\Downloads\Compressed\ffmpeg-4.0.2-win64-static\bin\ffmpeg.exe";

processStartInfo.Arguments = "\"ffmpeg -i " + input + " " + output + "\"";

Process.Start(processStartInfo);

}

}

}

 

I tried this code but it is not working. I think the reason is ffmpeg is created using C and I am accessing this through C# console application. Is this is due to the compatibility issue?