recordCamera("rtmp://localhost/oflaDemo/aa", 25);

[fdtomn]

my pom.xml file

    <dependency>
        <groupId>org.bytedeco</groupId>
        <artifactId>javacv</artifactId>
        <version>1.2</version>
    </dependency>

recordCamera method

public static void recordCamera(String outputFile, double frameRate) throws java.lang.Exception{
    //Loader.load(opencv_objdetect.class);
    int captureWidth = 1280;
    int captureHeight = 720;
    // 0 = default camera, 1 = next, etc.
    FrameGrabber grabber = new OpenCVFrameGrabber(0);
    grabber.setImageWidth(captureWidth);
    grabber.setImageHeight(captureHeight);
    grabber.start();

    OpenCVFrameConverter.ToIplImage converter = new OpenCVFrameConverter.ToIplImage();
    IplImage grabbedImage = converter.convert(grabber.grab());

    int width = grabbedImage.width();
    int height = grabbedImage.height();

    FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputFile, width, height);
    //recorder.setInterleaved(true);
    recorder.setFormat("flv");
    recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264); // avcodec.AV_CODEC_ID_H264
    recorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);
    recorder.setFrameRate(frameRate);

    recorder.start();

    CanvasFrame canvasframe = new CanvasFrame("Video Live",  CanvasFrame.getDefaultGamma() / grabber.getGamma());
    canvasframe.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    canvasframe.setAlwaysOnTop(true);
    Frame rotatedFrame=converter.convert(grabbedImage);
    long startTime=0;
    long videoTS=0;

    while(canvasframe.isVisible() && (grabbedImage = converter.convert(grabber.grab())) != null){
        rotatedFrame = converter.convert(grabbedImage);
        canvasframe.showImage(rotatedFrame);
        // 视频时长
        if (startTime == 0) {
            startTime = System.currentTimeMillis();
        }
        videoTS = 1000 * (System.currentTimeMillis() - startTime);

        recorder.setTimestamp(videoTS);
        recorder.record(rotatedFrame);
    }
    //释放资源
    canvasframe.dispose();
    recorder.stop();
    recorder.release();
    grabber.stop();
}

occur exception

Exception in thread "main" java.lang.NoClassDefFoundError: Could not initialize class org.bytedeco.javacpp.avutil
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at org.bytedeco.javacpp.Loader.load(Loader.java:464)
at org.bytedeco.javacpp.Loader.load(Loader.java:409)
at org.bytedeco.javacpp.avcodec$AVPacket.(avcodec.java:1559)
at org.bytedeco.javacv.FFmpegFrameRecorder.(FFmpegFrameRecorder.java:149)
at org.bytedeco.javacv.FFmpegFrameRecorder.(FFmpegFrameRecorder.java:126)
at com.xlinyu.javacv.HelloWorld.recordCamera(HelloWorld.java:49)
at com.xlinyu.javacv.HelloWorld.main(HelloWorld.java:30)

[saudet]

Probably a duplicate of #225. Declare a dependency on ffmpeg-3.1.2-1.2 explicitly.