（转）)C#视频转换为flv代码 .
http://blog.csdn.net/binbin_520/article/details/4059396
在上次随笔 Asp.net FMS 开发视频网站 中，好多朋友提到其他视频格式转化成FLV格式的问题，经过网上搜索资料研习整理，现经我的一点思路分享给大家：
我添加了一个转换FLV工程 VideoConvert：
1。配置文件里添加
- <appSettings>
- <!--convert tools path-->
- <add key="FfmpegPath" value="D:/tools/"/>
- <!-- setting -->
- <add key="ThreadCount" value="5" />
- <add key="BatchSize" value="10" />
- <add key="QueueTimeout" value="20" />
- <add key="TransactionTimeout" value="30" />
- </appSettings>
2。添加一个接口
- using System;
- using System.Collections.Generic;
- using System.Text;
- namespace VideoConvert
- {
- public interface IConvert
- {
- /**//// <summary>
- /// 将视频文件转换为Flv格式
- /// </summary>
- /// <param name="sourceFile">要转换的文件</param>
- /// <returns></returns>
- bool Convert(string sourceFile);
- /**//// <summary>
- /// 获取缩略图
- /// </summary>
- /// <param name="sourceFile"></param>
- /// <returns></returns>
- bool GetSmallImage(string sourceFile);
- }
- }
转换工具设定继承 IConvert
- using System;
- 2using System.Collections.Generic;
- 3using System.Text;
- 4using System.Configuration;
- 5
- 6
- 7namespace VideoConvert
- 8{
- 9 public class FfmpegConvert : IConvert
- 10 {
- 11
- 12
- 13 /**//// <summary>
- 14 /// 转换软件所在的路径
- 15 /// </summary>
- 16 private string ConvertTool = ConfigurationManager.AppSettings["FfmpegPath"] + "ffmpeg.exe";
- 17
- 18
- 19 /**//// <summary>
- 20 /// 构造函数
- 21 /// </summary>
- 22 public FfmpegConvert()
- 23 {
- 24
- 25 }
- 26
- 27
- 28 /**//// <summary>
- 29 /// 将视频文件转换为Flv格式
- 30 /// </summary>
- 31 /// <param name="sourceFile">要转换的文件</param>
- 32 /// <returns></returns>
- 33 public bool Convert(string sourceFile)
- 34 {
- 35 try
- 36 {
- 37 //文件名是否为空
- 38 if (string.IsNullOrEmpty(sourceFile)) return false;
- 39 //检测文件是否存在
- 40
- 41
- 42 string TargetFile = sourceFile.Substring(0, sourceFile.Length - 4) + ".flv";
- 43 string Argu = @"-i " + sourceFile + " -ab 56 -ar 22050 -b 500 -r 15 -s 480x360 " + TargetFile;
- 44
- 45 System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo(ConvertTool, Argu);
- 46 System.Diagnostics.Process.Start(startInfo);
- 47 System.Threading.Thread.Sleep(6000);
- 48 return true;
- 49
- 50 }
- 51 catch (Exception exp)
- 52 {
- 53 throw exp;
- 54 }
- 55
- 56 }
- 57
- 58
- 59 /**//// <summary>
- 60 /// 获取缩略图
- 61 /// </summary>
- 62 /// <param name="sourceFile"></param>
- 63 /// <returns></returns>
- 64 public bool GetSmallImage(string sourceFile)
- 65 {
- 66
- 67 //文件名是否为空
- 68 if (string.IsNullOrEmpty(sourceFile)) return false;
- 69 //检测文件是否存在
- 70
- 71 try
- 72 {
- 73 string TargetFile = sourceFile.Substring(0, sourceFile.Length - 4) + ".jpg";
- 74 string Argu = @"-i " + sourceFile + " -y -f image2 -ss 08.010 -t 0.001 -s 352x240 " + TargetFile;
- 75 System.Diagnostics.ProcessStartInfo startInfo = new System.Diagnostics.ProcessStartInfo(ConvertTool, Argu);
- 76 System.Diagnostics.Process.Start(startInfo);
- 77 System.Threading.Thread.Sleep(6000);
- 78
- 79
- 80 //必须等待进行完成后才能返回结果
- 81
- 82
- 83 return true;
- 84
- 85 }
- 86 catch (Exception exp)
- 87 {
- 88 throw exp;
- 89 }
- 90
- 91 }
- 92
- 93 }
- 94}
4.
- using System;
- 2using System.Collections.Generic;
- 3using System.Configuration;
- 4using System.Text;
- 5using System.Threading;
- 6using System.Transactions;
- 7using VideoConvert;
- 8
- 9namespace VideoConvert
- 10{
- 11 class Program
- 12 {
- 13
- 14 //threadCount
- 15 private static int threadCount = int.Parse(ConfigurationManager.AppSettings["ThreadCount"]);
- 16
- 17 private static IConvert tool = new FfmpegConvert();
- 18
- 19 //finished count
- 20 private static int completeCount = 0;
- 21
- 22 static void Main(string[] args)
- 23 {
- 24
- 25
- 26 Thread workTicketThread;
- 27 Thread[] workerThreads = new Thread[threadCount];
- 28
- 29 for (int i = 0; i < threadCount; i++)
- 30 {
- 31
- 32 workTicketThread = new Thread(new ThreadStart(ProcessVideo));
- 33
- 34 // Make this a background thread, so it will terminate when the main thread/process is de-activated
- 35 workTicketThread.IsBackground = true;
- 36 workTicketThread.SetApartmentState(ApartmentState.STA);
- 37
- 38 // Start the Work
- 39 workTicketThread.Start();
- 40 workerThreads[i] = workTicketThread;
- 41 }
- 42
- 43 Console.WriteLine("Converting begin. press Enter stop");
- 44 Console.ReadLine();
- 45 Console.WriteLine("cancel");
- 46
- 47 //abort all threads
- 48 for (int i = 0; i < workerThreads.Length; i++)
- 49 {
- 50
- 51 workerThreads[i].Abort();
- 52 }
- 53
- 54 Console.WriteLine();
- 55 Console.WriteLine(" Processed" + completeCount + "video files");
- 56 Console.WriteLine(" Process compeleted. press Enter to exit");
- 57 Console.ReadLine();
- 58
- 59
- 60 }
- 61
- 62
- 63 /**//// <summary>
- 64 /// Convert
- 65 /// </summary>
- 66 /// <returns></returns>
- 67 private static void ProcessVideo()
- 68 {
- 69
- 70
- 71 while (true)
- 72 {
- 73
- 74
- 75
- 76 if (!string.IsNullOrEmpty(waitConvertFile))
- 77 {
- 78 //Convert
- 79 Console.WriteLine("start to convert file:" + waitConvertFile + "");
- 80 try
- 81 {
- 82 if (tool.Convert(waitConvertFile.PhysicalPath) && tool.GetSmallImage(waitConvertFile.PhysicalPath))
- 83 {
- 84 completeCount++;
- 85
- 86 //Change waitConvertFile status if need
- 87
- 88 }
- 89 }
- 90 catch (Exception exp)
- 91 {
- 92 //setting Convert failure
- 93 Console.WriteLine("文件" + waitConvertFile.VideoID + "Convert failure");
- 94 }
- 95 Console.WriteLine("文件" + waitConvertFile.VideoID + "Convert ending");
- 96 Thread.Sleep(1000);
- 97 }
- 98 Thread.Sleep(1000 * 60);
- 99
- 100
- 101
- 102
- 103
- 104 }
- 105
- 106
- 107 }
- 108 }
- 109}
通过四步，我们视频转换工程就创建完了，这里的主要思路是服务器端调用视频转换工具 ffmpeg.exe，设置参数，通过Main来实现转换。