rtmp转flv java

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mob649e81576de1 2023-09-21 21:51:03 ©著作权

文章标签 .net Java java 文章分类 Java 后端开发

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RTMP转FLV Java 实现

RTMP（Real-Time Messaging Protocol）是一种用于实时数据传输的协议，常用于流媒体的传输和播放。FLV（Flash Video）是一种常见的视频文件格式，广泛应用于网络视频播放。

本文将介绍如何使用Java实现将RTMP流转换为FLV文件的功能。我们将使用开源的Java库Flazr来实现此功能。Flazr是一个基于Java的RTMP协议库，可以用于处理和操作RTMP流。

准备工作

在开始之前，我们需要准备以下工作：

安装Java开发环境（JDK）
下载Flazr库，可以在GitHub上找到该库的源代码和相关文档

创建Java项目

首先，我们需要创建一个Java项目，并将Flazr库添加到项目的类路径中。可以使用任何Java IDE（如Eclipse、IntelliJ IDEA）来创建项目。

RTMP流的连接和读取

import java.io.IOException;
import org.jboss.netty.buffer.ChannelBuffer;
import org.jboss.netty.buffer.ChannelBuffers;
import org.jboss.netty.channel.Channel;
import org.jboss.netty.channel.ChannelFuture;
import org.jboss.netty.channel.ChannelHandlerContext;
import org.jboss.netty.channel.ChannelPipeline;
import org.jboss.netty.channel.DefaultChannelFuture;
import org.jboss.netty.channel.MessageEvent;
import org.jboss.netty.channel.SimpleChannelUpstreamHandler;
import org.jboss.netty.handler.codec.http.HttpHeaders;
import org.jboss.netty.handler.codec.http.HttpRequest;
import org.jboss.netty.handler.codec.http.HttpResponse;
import org.jboss.netty.handler.codec.http.HttpResponseStatus;
import org.jboss.netty.handler.codec.http.HttpVersion;
import org.jboss.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
import org.jboss.netty.handler.codec.http.websocketx.TextWebSocketFrame;
import org.jboss.netty.handler.codec.http.websocketx.WebSocket08FrameEncoder;
import org.jboss.netty.handler.codec.http.websocketx.WebSocketFrame;
import org.jboss.netty.handler.codec.http.websocketx.WebSocketFrameDecoder;
import org.jboss.netty.handler.codec.http.websocketx.WebSocketFrameEncoder;
import org.jboss.netty.handler.codec.http.websocketx.WebSocketServerHandshaker;
import org.jboss.netty.handler.codec.http.websocketx.WebSocketServerHandshakerFactory;
import org.jboss.netty.handler.stream.ChunkedFile;
import org.jboss.netty.handler.stream.FileRegion;
import org.jboss.netty.handler.stream.ChunkedWriteHandler;
import org.jboss.netty.util.CharsetUtil;
import org.jboss.netty.util.HashedWheelTimer;
import org.jboss.netty.util.internal.ConcurrentHashMap;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.flazr.io.f4v.F4vAtom;
import org.flazr.io.f4v.F4vFile;
import org.flazr.io.f4v.F4vWriter;
import org.flazr.rtmp.RtmpDecoder;
import org.flazr.rtmp.RtmpEncoder;
import org.flazr.rtmp.RtmpMessage;
import org.flazr.rtmp.RtmpMessageDecoder;
import org.flazr.rtmp.RtmpMessageEncoder;
import org.flazr.rtmp.RtmpReader;
import org.flazr.rtmp.RtmpWriter;
import org.flazr.rtmp.RtmpHeader;
import org.flazr.rtmp.client.ClientOptions;
import org.flazr.rtmp.client.ClientSession;
import org.flazr.rtmp.client.ClientStream;
import org.flazr.rtmp.message.Audio;
import org.flazr.rtmp.message.Command;
import org.flazr.rtmp.message.Metadata;
import org.flazr.rtmp.message.Video;
import org.flazr.util.Utils;

public class RtmpToFlvConverter {
    private static final Logger logger = LoggerFactory.getLogger(RtmpToFlvConverter.class);

    private static final String RTMP_URL = "rtmp://example.com/live/stream";

    private static final String FLV_FILE = "output.flv";

    private static final int BUFFER_SIZE = 8192;

    private static final ConcurrentHashMap<Integer, Channel> channelMap = new ConcurrentHashMap<>();

    private static final HashedWheelTimer timer = new HashedWheelTimer();

    private static F4vWriter f4vWriter;

    public static void main(String[] args) {
        try {
            RtmpToFlvConverter converter = new RtmpToFlvConverter();
            converter.start();
        } catch (Exception e) {
            logger.error("Error converting RTMP to FLV", e);
        }
    }

    public void start() throws Exception {
        ClientOptions options = new ClientOptions();
        options.setConnectTimeoutMillis(5000);
        options.setReadTimeoutMillis(5000);

        ClientSession session = new ClientSession(options);

        session.connect(RTMP_URL);

        session.startHandshake();

        session.invoke("createStream", null);

        session.invoke("publish", RTMP_URL.substring(RTMP_URL.lastIndexOf("/") + 1), "live");

        Channel rtmpChannel = session.getChannel();

        ChannelPipeline pipeline = rtmpChannel.getPipeline();
        pipeline.addLast("handshaker", new RtmpHandshakeHandler());
        pipeline