springboot使用ffmpeg推流到srs服务器

首先，需要在pom.xml文件中添加以下依赖：

<dependency>
    <groupId>org.bytedeco</groupId>
    <artifactId>javacv</artifactId>
    <version>1.4.4</version>
</dependency>

接下来，可以使用以下代码将视频流推送到SRS服务器：

import org.bytedeco.ffmpeg.global.avcodec;
import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.FFmpegFrameRecorder;

import java.io.IOException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class PushStreamUtil {

    private static final String PUSH_STREAM_URL = "rtmp://localhost/live/test"; // SRS服务器地址
    private static final int FRAME_RATE = 25; // 帧率
    private static final int GOP_LENGTH_IN_FRAMES = 60; // GOP长度
    private static final int AUDIO_CHANNELS = 2;
    private static final int AUDIO_SAMPLE_RATE = 44100;

    private static final ExecutorService executorService = Executors.newSingleThreadExecutor();

    private static FFmpegFrameGrabber grabber;
    private static FFmpegFrameRecorder recorder;

    public static void startPushStream() {
        executorService.execute(() -> {
            try {
                grabber = new FFmpegFrameGrabber("video.mp4"); // 视频源文件
                grabber.start();
                recorder = new FFmpegFrameRecorder(PUSH_STREAM_URL, grabber.getImageWidth(), grabber.getImageHeight(), AUDIO_CHANNELS);
                recorder.setInterleaved(true);
                recorder.setVideoOption("crf", "28");
                recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
                recorder.setFormat("flv");
                recorder.setFrameRate(FRAME_RATE);
                recorder.setGopSize(GOP_LENGTH_IN_FRAMES);
                recorder.setAudioOption("crf", "0");
                recorder.setAudioQuality(0);
                recorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);
                recorder.setAudioChannels(AUDIO_CHANNELS);
                recorder.setSampleRate(AUDIO_SAMPLE_RATE);
                recorder.start();
                while (true) {
                    recorder.record(grabber.grab());
                }
            } catch (IOException | InterruptedException e) {
                e.printStackTrace();
            } finally {
                stopPushStream();
            }
        });
    }

    public static void stopPushStream() {
        try {
            if (recorder != null) {
                recorder.stop();
                recorder.release();
            }
            if (grabber != null) {
                grabber.stop();
                grabber.release();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

其中，`FFmpegFrameGrabber`用于从视频源文件中读取视频帧，`FFmpegFrameRecorder`用于将视频流推送到SRS服务器中。在`startPushStream`方法中启动推流任务，在`stopPushStream`方法中停止推流任务。

需要注意的是，在使用`FFmpegFrameGrabber`和`FFmpegFrameRecorder`时，需要保证本地机器上已经安装了FFmpeg组件。