Java Code Examples for org.bytedeco.javacv.FFmpegFrameGrabber#start()

private static void recordByFrame(FFmpegFrameGrabber grabber, FFmpegFrameRecorder recorder, Boolean status)
		throws Exception, org.bytedeco.javacv.FrameRecorder.Exception {
	try {// 建议在线程中使用该方法
		grabber.start();
		recorder.start();
		Frame frame = null;
		while (status && (frame = grabber.grabFrame()) != null) {
			recorder.record(frame);
		}
		recorder.stop();
		grabber.stop();
	} finally {
		if (grabber != null) {
			grabber.stop();
		}
	}
}
 

/**
 * 视频源
 * 
 * @param src
 * @return
 * @throws Exception
 */
public Recorder from(String src) throws Exception {
	av_log_set_level(AV_LOG_ERROR);
	if (src == null) {
		throw new Exception("源视频不能为空");
	}
	this.src = src;
	// 采集/抓取器
	grabber = new FFmpegFrameGrabber(src);
	if (hasRTSP(src)) {
		grabber.setOption("rtsp_transport", "tcp");
	}
	grabber.start();// 开始之后ffmpeg会采集视频信息，之后就可以获取音视频信息
	if (width < 0 || height < 0) {
		width = grabber.getImageWidth();
		height = grabber.getImageHeight();
	}
	// 视频参数
	audiocodecid = grabber.getAudioCodec();
	codecid = grabber.getVideoCodec();
	framerate = grabber.getVideoFrameRate();// 帧率
	bitrate = grabber.getVideoBitrate();// 比特率
	// 音频参数
	// 想要录制音频，这三个参数必须有：audioChannels > 0 && audioBitrate > 0 && sampleRate > 0
	audioChannels = grabber.getAudioChannels();
	audioBitrate = grabber.getAudioBitrate();
	if (audioBitrate < 1) {
		audioBitrate = 128 * 1000;// 默认音频比特率
	}
	sampleRate = grabber.getSampleRate();
	return this;
}
 

public void run() throws Exception, InterruptedException {
		FFmpegFrameGrabber ffmpegFrameGrabber = FFmpegFrameGrabber.createDefault("C:/Users/Administrator/Desktop/deta/detasource/videoProcess/webwxgetvideo.avi");
		ffmpegFrameGrabber.start();
//		int fflength = ffmpegFrameGrabber.getLengthInFrames();
//		int maxStamp = (int) (ffmpegFrameGrabber.getLengthInTime()/1000000);
//		int count = 0;
		while (true) {
			Frame nowFrame = ffmpegFrameGrabber.grabImage();
//			int startStamp = (int) (ffmpegFrameGrabber.getTimestamp() * 1.0/1000000);
//			double present = (startStamp * 1.0 / maxStamp) * 100;
			if (nowFrame == null) {
				System.out.println("!!! Failed cvQueryFrame");
				continue;
			}
			Java2DFrameConverter paintConverter = new Java2DFrameConverter();
			BufferedImage difImage = paintConverter.getBufferedImage(nowFrame, 1);
			paint(difImage);
			Thread.sleep(25);
		}
	}
 

/**
     * TODO: Check the use of this. 
     * @deprecated
     */
    @Deprecated
    public void startVideo() {
        FFmpegFrameGrabber grabberFF = new FFmpegFrameGrabber(this.cameraDescription);
        try {
            grabberFF.setFrameRate(30);
            this.setPixelFormat(PixelFormat.BGR);
            grabberFF.start();
            this.grabber = grabberFF;
            this.setSize(grabber.getImageWidth(), grabber.getImageHeight());
//            this.setFrameRate((int) grabberFF.getFrameRate());
            grabberFF.setFrameRate(30);
            this.isConnected = true;
        } catch (Exception e) {
            System.err.println("Could not FFMPEG frameGrabber... " + e);
            System.err.println("Camera ID " + this.cameraDescription + ":" + this.imageFormat + " could not start.");
            System.err.println("Check cable connection, ID and resolution asked.");
            this.grabber = null;
        }
    }
 

@Override
public void start() {
    FFmpegFrameGrabber grabberFF = new FFmpegFrameGrabber(this.cameraDescription);

    grabberFF.setImageMode(FrameGrabber.ImageMode.COLOR);

    this.setPixelFormat(PixelFormat.BGR);

    grabberFF.setFormat(this.imageFormat);
    grabberFF.setImageWidth(width());
    grabberFF.setImageHeight(height());
    grabberFF.setFrameRate(frameRate);

    try {
        grabberFF.start();
        this.grabber = grabberFF;
        this.isConnected = true;
    } catch (FrameGrabber.Exception e) {
        System.err.println("Could not FFMPEG frameGrabber... " + e);
        System.err.println("Camera ID " + this.cameraDescription + ":" + this.imageFormat + " could not start.");
        System.err.println("Check cable connection, ID and resolution asked.");
        this.grabber = null;
    }
}
 

/**
 * 选择视频源
 * @param src
 * @author eguid
 * @throws Exception
 */
public ConvertVideoPakcet from(String src) throws Exception {
	// 采集/抓取器
	grabber = new FFmpegFrameGrabber(src);
	if(src.indexOf("rtsp")>=0) {
		grabber.setOption("rtsp_transport","tcp");
	}
	grabber.start();// 开始之后ffmpeg会采集视频信息，之后就可以获取音视频信息
	if (width < 0 || height < 0) {
		width = grabber.getImageWidth();
		height = grabber.getImageHeight();
	}
	// 视频参数
	audiocodecid = grabber.getAudioCodec();
	System.err.println("音频编码：" + audiocodecid);
	codecid = grabber.getVideoCodec();
	framerate = grabber.getVideoFrameRate();// 帧率
	bitrate = grabber.getVideoBitrate();// 比特率
	// 音频参数
	// 想要录制音频，这三个参数必须有：audioChannels > 0 && audioBitrate > 0 && sampleRate > 0
	audioChannels = grabber.getAudioChannels();
	audioBitrate = grabber.getAudioBitrate();
	if (audioBitrate < 1) {
		audioBitrate = 128 * 1000;// 默认音频比特率
	}
	return this;
}
 

private void writeMp4Frame(File videoFile, File frameFile) throws Exception {
	FFmpegFrameGrabber g = new FFmpegFrameGrabber(videoFile);
	g.start();

	/*
	 * Get a frame in the middle of the video
	 */
	int startFrame = g.getLengthInVideoFrames() / 2;
	g.setVideoFrameNumber(startFrame);

	try {
		for (int i = startFrame; i < g.getLengthInFrames() && frameFile.length() == 0; i++) {
			try {
				Frame frame = g.grab();
				if (frame == null)
					continue;
				BufferedImage img = Java2DFrameUtils.toBufferedImage(frame);
				if (img == null)
					continue;

				ImageIO.write(img, "png", frameFile);
			} catch (Throwable t) {
			}
		}
	} finally {
		g.stop();
		g.close();
	}
}
 

public VidImageSequence(File f) throws IOException {
	
	super(f.getName());
	
	try {
		g = new FFmpegFrameGrabber(f);
		g.start();
		width	= g.getImageWidth();
		height	= g.getImageHeight();
		frames	= g.getLengthInFrames();
		
	} catch (Exception e) {
		throw new IOException();
	}
}
 

/**
 * 转发源视频到输出（复制）
 * 
 * @param src
 *            -源视频
 * @param out
 *            -输出流媒体服务地址
 * @return
 * @throws org.bytedeco.javacv.FrameRecorder.Exception
 */
public Recorder stream(String src, String out) throws IOException {
	if (src == null || out == null) {
		throw new Exception("源视频和输出为空");
	}
	this.src = src;
	this.out = out;
	// 采集/抓取器
	grabber = new FFmpegFrameGrabber(src);
	grabber.start();
	if (width < 0 || height < 0) {
		width = grabber.getImageWidth();
		height = grabber.getImageHeight();
	}
	// 视频参数
	int audiocodecid = grabber.getAudioCodec();
	int codecid = grabber.getVideoCodec();
	double framerate = grabber.getVideoFrameRate();// 帧率
	int bitrate = grabber.getVideoBitrate();// 比特率

	// 音频参数
	// 想要录制音频，这三个参数必须有：audioChannels > 0 && audioBitrate > 0 && sampleRate > 0
	int audioChannels = grabber.getAudioChannels();
	int audioBitrate = grabber.getAudioBitrate();
	int sampleRate = grabber.getSampleRate();

	// 录制/推流器
	record = new FFmpegFrameRecorderPlus(out, width, height);
	record.setVideoOption("crf", "18");
	record.setGopSize(1);

	record.setFrameRate(framerate);
	record.setVideoBitrate(bitrate);
	record.setAudioChannels(audioChannels);
	record.setAudioBitrate(audioBitrate);
	record.setSampleRate(sampleRate);
	AVFormatContext fc = null;
	//rtmp和flv
	if (hasRTMPFLV(out)) {
		// 封装格式flv，并使用h264和aac编码
		record.setFormat("flv");
		record.setVideoCodec(AV_CODEC_ID_H264);
		record.setAudioCodec(AV_CODEC_ID_AAC);
		if(hasRTMPFLV(src)) {
			fc = grabber.getFormatContext();
		}
	}else if(hasMP4(out)){//MP4
		record.setFormat("mp4");
		record.setVideoCodec(AV_CODEC_ID_H264);
		record.setAudioCodec(AV_CODEC_ID_AAC);
	}
	record.start(fc);
	return this;
}
 

public FFmpegFrameGrabber read(File video) throws FrameGrabber.Exception {
    FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber(video);
    frameGrabber.start();
    return frameGrabber;
}
 

private FFmpegFrameGrabber initFrameGrabber(String videoFileName) throws FrameGrabber.Exception {
    FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(new File(videoFileName));
    grabber.start();
    return grabber;
}
 

private FFmpegFrameGrabber initFrameGrabber(String videoFileName) throws FrameGrabber.Exception {
    FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(videoFileName);
    grabber.start();
    return grabber;
}