Process not spawning as a child

        var process = new Process();
        process.StartInfo.FileName = "ffmpeg";
        process.StartInfo.Arguments = "";
        process.StartInfo.RedirectStandardOutput = true;
        process.StartInfo.RedirectStandardError = true;
        process.StartInfo.UseShellExecute = false;
        process.StartInfo.CreateNoWindow = false;

        ...

        process.Start();
        process.BeginOutputReadLine();
        process.BeginErrorReadLine();