C# 使用ffmpeg.exe进行音频转换完整demo-asp.net转换代码

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

   /// <summary>

        /// 执行Cmd命令

        /// </summary>

        private string  Cmd(string c)

        {

            try

            {

                System.Diagnostics.Process process = new System.Diagnostics.Process();

                process.StartInfo.FileName = "cmd.exe";

                process.StartInfo.UseShellExecute = false;

                process.StartInfo.CreateNoWindow = true;

                process.StartInfo.UserName = "user";

                //构造用户密码，假定密码为123，必须一个字符一个字符的添加  

                System.Security.SecureString password = new System.Security.SecureString();

                password.AppendChar(‘p‘);

                password.AppendChar(‘a‘);

                password.AppendChar(‘s‘);

                password.AppendChar(‘s‘); 

                process.StartInfo.Password = password;  

                process.StartInfo.RedirectStandardInput = true;

                process.StartInfo.RedirectStandardOutput = true;

                process.StartInfo.RedirectStandardError = true;

                process.Start();

                process.StandardInput.WriteLine(c);

                process.StandardInput.AutoFlush = true;

                Thread.Sleep(1000);

                process.StandardInput.WriteLine("exit");

                process.WaitForExit();

                //StreamReader reader = process.StandardOutput;//截取输出流           

                string outStr = process.StandardOutput.ReadToEnd();

          process.Close();

                return outStr;

            }

            catch (Exception ex)

            {

                return "error"+ex.Message;

            }

        }

2

3

4

5

6

7

8

   protected void Button1_Click(object sender, EventArgs e)

    {

        string fileName = "d:\\2222.amr";

        string targetFileName = "d:\\2222.mp3";

        WavConvertAmr.WavConvertToAmr toamr = new WavConvertAmr.WavConvertToAmr();

        string remsg = toamr.ConvertToAmr(Server.MapPath("./ffmpeg/"), fileName, targetFileName);

    }

2

3

4

5

6

7

8

9

10

11

12

13

./当前目录

/网站主目录

../上层目录

~/网站虚拟目录

 如果当前的网站目录为E:\wwwroot   应用程序虚拟目录为E:\wwwroot\company 浏览的页面路径为E:\wwwroot\company\news\show.asp

在show.asp页面中使用

Server.MapPath("./")   返回路径为：E:\wwwroot\company\news

 Server.MapPath("/")    返回路径为：E:\wwwroot

 Server.MapPath("../")   返回路径为：E:\wwwroot\company

 Server.MapPath("~/")   返回路径为：E:\wwwroot\company

 server.MapPath(request.ServerVariables("Path_Info")) 

 Request.ServerVariables("Path_Translated")  

上面两种方式返回路径为 D:\wwwroot\company\news\show.asp