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Asp.net FMS 开发视频网站

 2007-06-16 17:47:01 来源:WEB开发网   
核心提示:开发步骤:1,下载FMS http://blogs.ugidotnet.org/kfra/archive/2006/10/04/50003.aspx,Asp.net FMS 开发视频网站,安装配置,2,播放速度很不错,虽说轻描淡写但已经给出应用asp.net开发视频网站的思路,使用Flash制作FMS视频采集的控件,3

开发步骤:
1。下载FMS http://blogs.ugidotnet.org/kfra/archive/2006/10/04/50003.aspx,安装配置。
2。使用Flash制作FMS视频采集的控件。
3。aspx页面嵌入FMS采集控件,运行采集数据上传到FMS服务器,修改数据库的视频文件存放地址。
4。页面嵌入Flash播放控件,加入FLV处理流代码:

 1using System;
 2using System.IO;
 3using System.Web;
 4
 5
 6/**//// <summary>
 7/// Summary description for FLVStreaming
 8/// </summary>
 9public class FLVStreaming : IHttpHandler
10{
11   PRivate static readonly byte[] _flvheader = HexToByte("464C5601010000000900000009"); //"FLV\x1\x1\0\0\0\x9\0\0\0\x9"
12
13   public FLVStreaming()
14   {
15   }
16
17   public void ProcessRequest(HttpContext context)
18   {
19     try
20     {
21       int pos;
22       int length;
23
24       // Check start parameter if present
25       string filename = Path.GetFileName(context.Request.FilePath);
26
27       using (FileStream fs = new FileStream(context.Server.MapPath(filename), FileMode.Open, Fileaccess.Read, FileShare.Read))
28       {
29         string qs = context.Request.Params["start"];
30
31         if (string.IsNullOrEmpty(qs))
32         {
33           pos = 0;
34           length = Convert.ToInt32(fs.Length);
35         }
36         else
37         {
38           pos = Convert.ToInt32(qs);
39           length = Convert.ToInt32(fs.Length - pos) + _flvheader.Length;
40         }
41
42         // Add HTTP header stuff: cache, content type and length    
43         context.Response.Cache.SetCacheability(HttpCacheability.Public);
44         context.Response.Cache.SetLastModified(DateTime.Now);
45
46         context.Response.AppendHeader("Content-Type", "video/x-flv");
47         context.Response.AppendHeader("Content-Length", length.ToString());
48
49         // Append FLV header when sending partial file
50         if (pos > 0)
51         {
52           context.Response.OutputStream.Write(_flvheader, 0, _flvheader.Length);
53           fs.Position = pos;
54         }
55
56         // Read buffer and write stream to the response stream
57         const int buffersize = 16384;
58         byte[] buffer = new byte[buffersize];
59        
60         int count = fs.Read(buffer, 0, buffersize);
61         while (count > 0)
62         {
63           if (context.Response.IsClientConnected)
64           {
65             context.Response.OutputStream.Write(buffer, 0, count);
66             count = fs.Read(buffer, 0, buffersize);
67           }
68           else
69           {
70             count = -1;
71           }
72         }
73       }
74     }
75     catch (Exception ex)
76     {
77       System.Diagnostics.Debug.WriteLine(ex.ToString());
78     }
79   }
80
81   public bool IsReusable
82   {
83     get { return true; }
84   }
85
86   private static byte[] HexToByte(string hexString)
87   {
88     byte[] returnBytes = new byte[hexString.Length / 2];
89     for (int i = 0; i < returnBytes.Length; i++)
90       returnBytes[i] = Convert.ToByte(hexString.Substring(i * 2, 2), 16);
91     return returnBytes;
92   }
93
94}
95修改配置文件,运行页面即可调出视频,播放速度很不错。虽说轻描淡写但已经给出应用asp.net开发视频网站的思路。如果有兴趣可以联系我。

http://www.cnblogs.com/xiucai/archive/2007/06/13/782001.html

Tags:Asp net FMS

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