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將IP攝像頭連接到C＃應用程序時，我在Aforge/Samples/Player中找到了簡單的播放器。它只需要修改ip字符串，所以我加了我的 admin：[email protected]：81/videostream.cgi？rate = 11得到MJPEG視頻流。在編譯時，我得到錯誤爲 遠程服務器返回錯誤（401）未經授權。 Andre Kirillow在MJPEGstream.cs文件中提到 某些攝像頭會產生HTTP頭，嚴重不符合標準，導致.NET異常。爲避免這種異常，應使用useUnsafeHeaderParsing配置選項httpWebRequest應該設置什麼，使用應用程序配置文件可以做些什麼。IP Camera 401未授權錯誤
<configuration>
<system.net>
<settings>
<httpWebRequest useUnsafeHeaderParsing="true" />
</settings>
</system.net>
</configuration>
好吧有兩種方法可以按照Dinis Cruz的建議做到這一點。我用上面的代碼添加了.config文件，並且它也編程了，但同樣的錯誤依然存在。該播放器程序編碼是
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Diagnostics;
using AForge.Video;
using AForge.Video.DirectShow;
using System.Reflection;
using System.Net.Configuration;
using System.Net;
namespace Player
{
public partial class MainForm : Form
{
private Stopwatch stopWatch = null;
// Class constructor
public MainForm()
{
InitializeComponent();
}
private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
{
CloseCurrentVideoSource();
}
// "Exit" menu item clicked
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
}
// Open local video capture device
private void localVideoCaptureDeviceToolStripMenuItem_Click(object sender, EventArgs e)
{
VideoCaptureDeviceForm form = new VideoCaptureDeviceForm();
if (form.ShowDialog(this) == DialogResult.OK)
{
// create video source
VideoCaptureDevice videoSource = form.VideoDevice;
// open it
OpenVideoSource(videoSource);
}
}
// Open video file using DirectShow
private void openVideofileusingDirectShowToolStripMenuItem_Click(object sender, EventArgs e)
{
if (openFileDialog.ShowDialog() == DialogResult.OK)
{
// create video source
FileVideoSource fileSource = new FileVideoSource(openFileDialog.FileName);
// open it
OpenVideoSource(fileSource);
}
}
// Open JPEG URL
private void openJPEGURLToolStripMenuItem_Click(object sender, EventArgs e)
{
URLForm form = new URLForm();
form.Description = "Enter URL of an updating JPEG from a web camera:";
form.URLs = new string[]
{
"http://195.243.185.195/axis-cgi/jpg/image.cgi?camera=1",
};
if (form.ShowDialog(this) == DialogResult.OK)
{
// create video source
JPEGStream jpegSource = new JPEGStream(form.URL);
// open it
OpenVideoSource(jpegSource);
}
}
// Open MJPEG URL
private void openMJPEGURLToolStripMenuItem_Click(object sender, EventArgs e)
{
URLForm form = new URLForm();
form.Description = "Enter URL of an MJPEG video stream:";
form.URLs = new string[]
{
"http://[email protected]:81/videostream.cgi?rate=11",
"mjpegSource by mobby"
};
if (form.ShowDialog(this) == DialogResult.OK)
{
// create video source
MJPEGStream mjpegSource = new MJPEGStream(form.URL);
// open it
OpenVideoSource(mjpegSource);
}
}
// Open video source
private void OpenVideoSource(IVideoSource source)
{
// set busy cursor
this.Cursor = Cursors.WaitCursor;
// stop current video source
//CloseCurrentVideoSource();
// start new video source
videoSourcePlayer.VideoSource = source;
videoSourcePlayer.Start();
// reset stop watch
stopWatch = null;
// start timer
timer.Start();
this.Cursor = Cursors.Default;
}
// Close video source if it is running
private void CloseCurrentVideoSource()
{
if (videoSourcePlayer.VideoSource != null)
{
videoSourcePlayer.SignalToStop();
// wait ~ 3 seconds
for (int i = 0; i < 30; i++)
{
if (!videoSourcePlayer.IsRunning)
break;
System.Threading.Thread.Sleep(100);
}
if (videoSourcePlayer.IsRunning)
{
videoSourcePlayer.Stop();
}
videoSourcePlayer.VideoSource = null;
}
}
// New frame received by the player
private void videoSourcePlayer_NewFrame(object sender, ref Bitmap image)
{
DateTime now = DateTime.Now;
Graphics g = Graphics.FromImage(image);
// paint current time
SolidBrush brush = new SolidBrush(Color.Red);
g.DrawString(now.ToString(), this.Font, brush, new PointF(5, 5));
brush.Dispose();
g.Dispose();
}
// On timer event - gather statistics
private void timer_Tick(object sender, EventArgs e)
{
IVideoSource videoSource = videoSourcePlayer.VideoSource;
if (videoSource != null)
{
// get number of frames since the last timer tick
int framesReceived = videoSource.FramesReceived;
if (stopWatch == null)
{
stopWatch = new Stopwatch();
stopWatch.Start();
}
else
{
stopWatch.Stop();
float fps = 1000.0f * framesReceived/stopWatch.ElapsedMilliseconds;
fpsLabel.Text = fps.ToString("F2") + " fps";
stopWatch.Reset();
stopWatch.Start();
}
}
}
public static bool SetAllowUnsafeHeaderParsing20()
{
//Get the assembly that contains the internal class
Assembly aNetAssembly = Assembly.GetAssembly(typeof(System.Net.Configuration.SettingsSection));
if (aNetAssembly != null)
{
//Use the assembly in order to get the internal type for the internal class
Type aSettingsType = aNetAssembly.GetType("System.Net.Configuration.SettingsSectionInternal");
if (aSettingsType != null)
{
//Use the internal static property to get an instance of the internal settings class.
//If the static instance isn't created allready the property will create it for us.
object anInstance = aSettingsType.InvokeMember("Section",
BindingFlags.Static | BindingFlags.GetProperty | BindingFlags.NonPublic, null, null, new object[] { });
if (anInstance != null)
{
//Locate the private bool field that tells the framework is unsafe header parsing should be allowed or not
FieldInfo aUseUnsafeHeaderParsing = aSettingsType.GetField("useUnsafeHeaderParsing", BindingFlags.NonPublic | BindingFlags.Instance);
if (aUseUnsafeHeaderParsing != null)
{
aUseUnsafeHeaderParsing.SetValue(anInstance, true);
return true;
}
}
}
}
return false;
}
}
}
從谷歌我加了一些開放的IP攝像機和有視頻流被抓獲，並能正常工作，但我的相機返回錯誤401然後我用這是使用內置最近Sean Tearney做出ISPY軟件相同的Aforge庫，它捕捉我的相機的視頻流：第。現在我不知道簡單播放器的編碼有什麼問題。 如果有人能幫助我從攝像頭獲取視頻流，請加以幫助。 Thankyou