JavaCV常用工具

maven依赖

<dependency><groupId>org.bytedeco</groupId><artifactId>javacv-platform</artifactId><version>1.5.5</version>
</dependency>

工具类/*** @author excuse* @apiNote 视频剪辑工具类* @version 1.0.0** */
public class VideoUtil {public static String videoPath_temp_path= "D://video1/";/**** @apiNote 切割视频指定的位置* @param videoPath 视频路径* @param start 视频开始时间 ，单位秒* @param end 视频结束时间* @param recodeAudio 是否录制音频* @return 生成文件路径* */public static String  cutVideo(String videoPath,Integer start,Integer end,boolean recodeAudio) throws FFmpegFrameGrabber.Exception, FFmpegFrameRecorder.Exception {FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(videoPath);grabber.start();String s = UUID.randomUUID().toString()+".mp4";FFmpegFrameRecorder fFmpegFrameRecorder = new FFmpegFrameRecorder(videoPath_temp_path + s,grabber.grabImage().imageWidth,grabber.grabImage().imageHeight,recodeAudio?1:0);fFmpegFrameRecorder.start();Frame frame = null;while ((frame=grabber.grabFrame(recodeAudio,true,true,false))!=null){if ((start==null?0:(start*1000000))<frame.timestamp&&(end == null || ((end * 1000000) > frame.timestamp))){fFmpegFrameRecorder.record(frame);}}fFmpegFrameRecorder.stop();fFmpegFrameRecorder.release();return s;}/*** @apiNote 视频添加水印* @param videoPath 视频路径* @param text 水印文本* @param x 水印位置x* @param y 水印位置y* @param color 水印颜色* @param fontSize 水印文字大小* @return 生成文件路径** */public static String waterMark(String videoPath, String text, Integer x, Integer y, Color color, Integer fontSize) throws Exception {FFmpegFrameGrabber grabber = new FFmpegFrameGrabber(videoPath);grabber.start();Frame frame = grabber.grabImage();String s = videoPath_temp_path + UUID.randomUUID().toString()+".mp4";FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(s,frame.imageWidth,frame.imageHeight,0);recorder.start();int j= 0;while ((frame=grabber.grabImage())!=null){Java2DFrameConverter converter = new Java2DFrameConverter();BufferedImage bufImg = converter.getBufferedImage(frame);Font font = new Font("微软雅黑", Font.BOLD, 64);
//            String content = new SimpleDateFormat("yyyy-MM-dd").format(new Date());
//            String content1 = "字符滚动效果";FontDesignMetrics metrics = FontDesignMetrics.getMetrics(font);int width = bufImg.getWidth();//计算图片的宽int height = bufImg.getHeight();//计算高Graphics2D graphics = bufImg.createGraphics();graphics.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);graphics.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));graphics.drawImage(bufImg, 0, 0, bufImg.getWidth(), bufImg.getHeight(), null);graphics.setColor(color);graphics.setFont(new Font("微软雅黑", Font.BOLD, fontSize));graphics.drawString(text,  x, y);graphics.dispose();frame = converter.getFrame(bufImg);recorder.record(frame);j++;}grabber.stop();recorder.stop();recorder.release();return s;}/*** @apiNote 合并音视频* @param audioPath 音频路径* @param videoPath 视频路径* @return 最终生成文件地址** */public String mergeAV(String audioPath,String videoPath){String outputPath = videoPath_temp_path+UUID.randomUUID()+".mp4";try (FFmpegFrameGrabber imageGrabber = new FFmpegFrameGrabber(videoPath);FFmpegFrameGrabber audioGrabber = new FFmpegFrameGrabber(audioPath)) {imageGrabber.start();audioGrabber.start();try (FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(outputPath, imageGrabber.getImageWidth(), imageGrabber.getImageHeight(),1);) {recorder.setInterleaved(true);recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);recorder.setFormat("mp4");recorder.setPixelFormat(avutil.AV_PIX_FMT_YUV420P); // yuv420pint frameRate = 25;recorder.setFrameRate(frameRate);recorder.setGopSize(frameRate * 2);recorder.setAudioOption("crf", "0");recorder.setAudioQuality(0);// 最高质量recorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);recorder.setAudioChannels(2);recorder.setSampleRate(44100);recorder.start();long videoTime = imageGrabber.getLengthInTime();Frame imageFrame = null;while ((imageFrame = imageGrabber.grabImage()) != null) {recorder.record(imageFrame);}long audioPlayTime = 0L;Frame sampleFrame = null;while ((sampleFrame = audioGrabber.grabSamples()) != null || audioPlayTime < videoTime) {if (sampleFrame == null) {audioGrabber.restart();//重新开始sampleFrame = audioGrabber.grabSamples();videoTime -= audioPlayTime;}recorder.record(sampleFrame);audioPlayTime = audioGrabber.getTimestamp();if (audioPlayTime >= videoTime) {break;}}}} catch (Exception e) {throw new RuntimeException(e);}return outputPath;}/**** @apiNote 合并多个视频* @param list 要合并的视频列表* @param outputPath 输出文件位置* @return 返回输出文件位置*** */public static String mergeVideo(java.util.List<String> list,String outputPath) throws FrameGrabber.Exception {ArrayList<FFmpegFrameGrabber> grabbers = new ArrayList<>();OpenCVFrameGrabber grabber1 = new OpenCVFrameGrabber(list.get(0));grabber1.start();Frame frame1 = grabber1.grabFrame();for (int i = 0; i < list.size(); i++) {System.out.println(list.get(i));grabbers.add(new FFmpegFrameGrabber(list.get(i)));FFmpegFrameGrabber grabber = grabbers.get(i);grabber.start();}Map<String, String> metadata = grabbers.get(0).getMetadata();FFmpegFrameRecorder fFmpegFrameRecorder = new FFmpegFrameRecorder(outputPath+"temp0"+".mp4",frame1.imageWidth,frame1.imageHeight,grabbers.get(0).getAudioChannels());grabber1.stop();fFmpegFrameRecorder.setFormat("mp4");fFmpegFrameRecorder.setAudioChannels(2);fFmpegFrameRecorder.setGopSize(4);try {fFmpegFrameRecorder.start();for (int i = 0; i < grabbers.size(); i++) {FFmpegFrameGrabber grabber = grabbers.get(i);if (i>0){FFmpegFrameGrabber grabber2 = new FFmpegFrameGrabber(outputPath + "temp" + (i - 1) + ".mp4");grabber2.start();fFmpegFrameRecorder = new FFmpegFrameRecorder(outputPath+"temp"+(i)+".mp4",frame1.imageWidth,frame1.imageHeight,grabber2.getAudioChannels());fFmpegFrameRecorder.start();grabber2.setFormat("mp4");System.out.println(grabber2.getFormat());Frame avFrame = null;while ((avFrame = grabber2.grabFrame())!=null){fFmpegFrameRecorder.record(avFrame);}grabber2.release();grabber2.stop();grabber2.close();new File(outputPath + "_temp_" + (i - 1) + ".mp4").deleteOnExit();}Frame avFrame = null;while ((avFrame = grabber.grabFrame(true,true,true,false))!=null){
//                    fFmpegFrameRecorder.record(avFrame);fFmpegFrameRecorder.record(avFrame);}grabber.stop();fFmpegFrameRecorder.stop();System.gc();}fFmpegFrameRecorder.stop();File file = new File(outputPath + "temp" + (grabbers.size() - 1) + ".mp4");file.renameTo(new File(outputPath+".mp4"));return outputPath;} catch (FFmpegFrameRecorder.Exception | FrameGrabber.Exception e) {e.printStackTrace();try {fFmpegFrameRecorder.stop();for (int i = 0; i < grabbers.size(); i++) {grabbers.get(i).stop();}} catch (FFmpegFrameRecorder.Exception | FrameGrabber.Exception ex) {ex.printStackTrace();}throw new RuntimeException("合成失败");}}}

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