Asp.net FMS 开发视频网站

news/2024/5/9 11:20:48/文章来源:https://blog.csdn.net/hexingyeyun/article/details/1768371

昨天看到利用FMS（Flash Media Server）做在线视频录制的资料，地址：http://www.cincn.com/article.asp?id=15，还有播放流式FLV文件的资料，地址：http://blogs.ugidotnet.org/kfra/archive/2006/10/04/50003.aspx，很好，把我高兴坏了，所以有了FMS架设视频服务器的想法，，主要内容如下：

asp.netFMS.jpg

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。如转载请注明来源、作者及出处，谢谢。