programming Need help understanding this C# code

[Shammikit]

i want to generate a image from video using C#. dont know how to get this done,so i checked online and found this code below but im having trouble understanding it.if anyone could explain what it does in a simple way as im not very good in programming it would be very helpful.thanks

public static Bitmap GetThumbnail(string video, string thumbnail)
{
    var cmd = "ffmpeg  -itsoffset -1  -i " + '"' + video + '"' + " -vcodec mjpeg -vframes 1 -an -f rawvideo -s 320x240 " + '"' + thumbnail + '"';

    var startInfo = new ProcessStartInfo
    {
        WindowStyle = ProcessWindowStyle.Hidden,
        FileName = "cmd.exe",
        Arguments = "/C " + cmd
    };

    var process = new Process
    {
        StartInfo = startInfo
    };

    process.Start();
    process.WaitForExit(5000);

    return LoadImage(thumbnail);
}

static Bitmap LoadImage(string path)
{
    var ms = new MemoryStream(File.ReadAllBytes(path));
    return (Bitmap)Image.FromStream(ms);
}

source: https://stackoverflow.com/questions/15702031/get-thumbnail-image-of-video-file-in-c-sharp

[madknight3]

Basically, the code is running FFmpeg from the command line using the Process class.

 

Here is some documentation to explain the Process classes in more detail

• Process Class
• ProcessStartInfo Class

 

FFmpeg is generating an image from the specified video (ie: the video parameter) and saving it to the specified location (ie: the thumbnail parameter) which you can then load into your application (ie: the code in the LoadImage method).