C＃和ffpmeg命令行问题

Question

I have a php code that calls ffmpeg from the windows command line (because I run apache locally) with:

//ffmpeg -i input.mp4 -r 20 output.gif
        echo exec('C:\ffmpeg\bin\ffmpeg.exe -i videos/file.avi -r 10  -s 450x230 videos/file.gif');

And it works fine! Now I wrote a C# program and I try to do the same thing with:

 System.Diagnostics.Process.Start

but it fails.

Question: How do I execute the same command from the PHP code but from inside a C# code?

Answer 1

Process process = Process.Start(
    new ProcessStartInfo
    {
        FileName = @"C:\ffmpeg\bin\ffmpeg.exe",
        Arguments = "-i videos/file.avi -r 10  -s 450x230 videos/file.gif",
        WindowStyle = ProcessWindowStyle.Hidden
    }
);
process.WaitForExit();

If it fails an exception will be raised, eg System.ComponentModel.Win32Exception with HResult=-2147467259 if the executable wasn't found.