c#实现flv解析详解示例

下面是一个使用C#实现FLV解析的示例代码：

using System;
using System.IO;
public class FLVParser
{
private static readonly int FLV_HEADER_SIZE = 9;
private static readonly int TAG_HEADER_SIZE = 11;
private FileStream fileStream;
public FLVParser(string filePath)
{
fileStream = new FileStream(filePath, FileMode.Open);
}
public void ParseFLV()
{
// 解析FLV头部
byte[] flvHeader = new byte[FLV_HEADER_SIZE];
fileStream.Read(flvHeader, 0, FLV_HEADER_SIZE);
Console.WriteLine("FLV Version: " + flvHeader[3]);
Console.WriteLine("Audio Flag: " + ((flvHeader[4] & 0x04) > 0));
Console.WriteLine("Video Flag: " + ((flvHeader[4] & 0x01) > 0));
// 解析FLV标签
while (fileStream.Position < fileStream.Length)
{
byte[] tagHeader = new byte[TAG_HEADER_SIZE];
fileStream.Read(tagHeader, 0, TAG_HEADER_SIZE);
int dataSize = ((tagHeader[1] << 16) | (tagHeader[2] << 8) | tagHeader[3]) - TAG_HEADER_SIZE;
byte[] tagData = new byte[dataSize];
fileStream.Read(tagData, 0, dataSize);
int timestamp = (tagHeader[7] << 16) | (tagHeader[4] << 8) | tagHeader[5];
int streamId = (tagHeader[10] << 16) | (tagHeader[8] << 8) | tagHeader[9];
Console.WriteLine("Tag Type: " + tagHeader[0]);
Console.WriteLine("Data Size: " + dataSize);
Console.WriteLine("Timestamp: " + timestamp);
Console.WriteLine("Stream ID: " + streamId);
}
fileStream.Close();
}
}
public class Program
{
public static void Main(string[] args)
{
string filePath = "path/to/your/flv/file.flv";
FLVParser flvParser = new FLVParser(filePath);
flvParser.ParseFLV();
}
}

以上代码实现了一个简单的FLV解析器，它会读取FLV文件的头部，并解析每个FLV标签的类型、数据大小、时间戳和流ID。你可以按照自己的需求对每个标签进行进一步处理。请将代码中的path/to/your/flv/file.flv替换为你实际的FLV文件路径。