C# onvif获取摄像头rtsp视频流地址和抓拍图片地址

C#使用onvif协议获取网络摄像头rtsp视频流地址和图片地址，将rtsp视频流地址保存到本地mp4可以参考我的另一个资源

using System;
using System.Collections.Generic;
using System.Linq;
using System.Security.Cryptography;
using System.Text;

namespace DoneWin.BPM
{
    class DigestPassword
    {
        private static String validChars = “abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ“;
        private static Random randomNum = new Random（）;

        public static String getNonce（int length）
        {
            var nonceString = new StringBuilder（）;

            for （int i = 0; i < length; i++）
            {
                nonceString.Append（validChars[randomNum.Next（0 validChars.Length - 1）]）;
            }

            return nonceString.ToString（）;
        }

        public static DateTime getCurrentTime（DateTime startDate DateTime baseDateTime）
        {
            /* get synced-time */
            try
            {
                DateTime currentDate = DateTime.Now;
                long elapsedTicks = currentDate.Ticks - startDate.Ticks;

                TimeSpan elapsedSpan = new TimeSpan（elapsedTicks）;

                baseDateTime = baseDateTime.AddTicks（elapsedTicks）;
            }
            catch （ArgumentNullException ane）
            {
                Console.WriteLine（“ArgumentNullException: {0}“ ane.Message）;
            }
            return baseDateTime;
        }
        public static String getCreatedTimeString（DateTime baseDateTime）
        {
            var timeString = new StringBuilder（）;

            DateTime baseTime = baseDateTime;

            timeString.Append（baseTime.Year.ToString（） + “-“）;
            timeString.Append（baseTime.Month.ToString（“D2“） + “-“）;
            timeString.Append（baseTime.Day.ToString（“D2“） + “T“）;
            timeString.Append（baseTime.Hour.ToString（“D2“） + “:“）;
            timeString.Append（baseTime.Minute.ToString（“D2“） + “:“）;
            timeString.Append（baseTime.Second.ToString（“D2“） + “.“）;
            timeString.Append（baseTime.Millisecond.ToString（“D3“） + “Z“）;

            return timeString.ToString（）;
        }

        public static String getPasswordDigest（String noncebase64 String createTime String password）
        {
            byte[] nonceBinary = EncodingHelper.base64Decode（noncebase64）;
            byte[] utctimeBinary = EncodingHelper.String2Byte（createTime）;
            byte[] pwdBinary = EncodingHelper.String2Byte（password）;

            byte[] combined = new byte[nonceBinary.Length + utctimeBinary.Length + pwdBinary.Length];

            System.Buffer.BlockCopy（nonceBinary 0 combined 0 nonceBinary.Length）;
            System.Buffer.BlockCopy（utctimeBinary 0 combined nonceBinary.Length utctimeBinary.Length）;
            System.Buffer.BlockCopy（pwdBinary 0 combined nonceBinary.Length + utctimeBinary.Length pwdBinary.Length）;

            SHA1Managed sha1 = new SHA1Managed（）;

            byte[] passwordHash = sha1.ComputeHash（combined）;

            String hashValue = System.Convert.Tobase64String（passwordHash）;

            return hashValue

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-01-18 09:03  onvifTest\
     目录           0  2018-01-18 09:03  onvifTest\.vs\
     目录           0  2018-01-18 09:03  onvifTest\.vs\onvifTest\
     目录           0  2018-01-18 09:03  onvifTest\.vs\onvifTest\v14\
     文件       57344  2018-01-19 15:29  onvifTest\.vs\onvifTest\v14\.suo
     目录           0  2018-01-19 14:56  onvifTest\onvifTest\
     文件         189  2018-01-18 09:03  onvifTest\onvifTest\App.config
     文件        3025  2017-09-26 09:43  onvifTest\onvifTest\DigestPassword.cs
     文件        1070  2017-09-26 09:25  onvifTest\onvifTest\EncodingHelper.cs
     文件        2029  2018-01-18 09:03  onvifTest\onvifTest\Form1.Designer.cs
     文件         983  2018-01-19 14:56  onvifTest\onvifTest\Form1.cs
     文件        5817  2018-01-18 09:03  onvifTest\onvifTest\Form1.resx
     文件        2054  2017-11-14 15:33  onvifTest\onvifTest\HttpControl.cs
     文件       33025  2018-01-19 14:56  onvifTest\onvifTest\OnvifHelper.cs
     文件         521  2018-01-18 09:03  onvifTest\onvifTest\Program.cs
     目录           0  2018-01-18 09:03  onvifTest\onvifTest\Properties\
     文件        1344  2018-01-18 09:03  onvifTest\onvifTest\Properties\AssemblyInfo.cs
     文件        2831  2018-01-18 09:03  onvifTest\onvifTest\Properties\Resources.Designer.cs
     文件        5612  2018-01-18 09:03  onvifTest\onvifTest\Properties\Resources.resx
     文件        1096  2018-01-18 09:03  onvifTest\onvifTest\Properties\Settings.Designer.cs
     文件         249  2018-01-18 09:03  onvifTest\onvifTest\Properties\Settings.settings
     文件        1131  2018-01-18 14:54  onvifTest\onvifTest\ToolboxGroup.Designer.cs
     文件       23743  2018-01-18 14:55  onvifTest\onvifTest\ToolboxGroup.cs
     文件        5401  2017-09-26 10:12  onvifTest\onvifTest\xmlControl.cs
     目录           0  2018-01-18 14:54  onvifTest\onvifTest\bin\
     目录           0  2018-01-18 09:10  onvifTest\onvifTest\bin\Debug\
     文件       47104  2018-01-19 14:57  onvifTest\onvifTest\bin\Debug\onvifTest.exe
     文件         189  2018-01-18 09:03  onvifTest\onvifTest\bin\Debug\onvifTest.exe.config
     文件       58880  2018-01-19 14:57  onvifTest\onvifTest\bin\Debug\onvifTest.pdb
     文件       22696  2018-01-19 14:57  onvifTest\onvifTest\bin\Debug\onvifTest.vshost.exe
     文件         189  2018-01-18 09:03  onvifTest\onvifTest\bin\Debug\onvifTest.vshost.exe.config
............此处省略20个文件信息