how to start process with hidden window

Question

I have this code:

string d = "-f image2 -framerate 9 -i E:\\REC\\Temp\\%06d.jpeg -r 30 E:\\REC\\Video\\" + label1.Text + ".avi";

//string d = "-f dshow -i video=\"screen-capture-recorder\" E:\\REC\\" + label1.Text + ".flv";
Process proc = new Process();
proc.StartInfo.FileName = "E:\\ffmpeg\\bin\\ffmpeg.exe";
proc.StartInfo.Arguments = d;
proc.StartInfo.UseShellExecute = false;
proc.StartInfo.CreateNoWindow = false;
proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden;
proc.StartInfo.WindowStyle = ProcessWindowStyle.Maximized;

if (!proc.Start())
{
    Console.WriteLine("Error starting");
    return;
}
proc.WaitForExit();

When it runs the ffmpeg.exe is there like this:

enter image description here

My question is how to hide this window?

Also do note that if you're redirecting standard output, you *have* to read it (typically asynchronously, but it's not necessary in your case). — Luaan, Mar 25 '14 at 13:02
it basically do one job is to convert images to video i execute this code only if there are images so it will almost work every time, but i don't want it to run on front of the user it need to be hide — Maged E William, Mar 25 '14 at 13:06
possible duplicate of [Hide console window from Process.Start C#](http://stackoverflow.com/questions/5377423/hide-console-window-from-process-start-c-sharp) — Fedor, Mar 25 '14 at 13:23

score 3 · Answer 1 · answered Mar 25 '14 at 13:32

You need the following combination of settings:

proc.StartInfo.UseShellExecute = false;
proc.StartInfo.CreateNoWindow = true;

And that's it.

The reason being that the key setting is CreateNoWindow which has to be true. But CreateNoWindow only has any effect when UseShellExecute is false. That's because CreateNoWindow maps to the CREATE_NO_WINDOW process creation flag passed to CreateProcess. And CreateProcess is only called when UseShellExecute is false.

More information can be found from the documentation:

Property Value

true if the process should be started without creating a new window to contain it; otherwise, false. The default is false.

Remarks

If the UseShellExecute property is true or the UserName and Password properties are not null, the CreateNoWindow property value is ignored and a new window is created.

score 1 · Answer 2 · answered Mar 25 '14 at 13:38

This on keeps the all processes in same console window. no allow to open an new one`

Process process = new Process();

 // Stop the process from opening a new window
 process.StartInfo.RedirectStandardOutput = true;
 process.StartInfo.UseShellExecute = false;
 process.StartInfo.CreateNoWindow = true;

// Setup executable and parameters
  process.StartInfo.FileName = @"E:\\ffmpeg\\bin\\ffmpeg.exe"

 //Optional
  string d = "-f image2 -framerate 9 -i E:\\REC\\Temp\\%06d.jpeg -r 30 E:\\REC\\Video\\" + label1.Text + ".avi";
 process.StartInfo.Arguments = d;

 // Go
  process.Start();

how to start process with hidden window

2 Answers2

Linked