javacv 视频增加视频（画中画）

1、项目添加依赖

        <dependency>
            <groupId>org.bytedeco</groupId>
            <artifactId>javacv-platform</artifactId>
            <version>1.5</version>
        </dependency>

　　

2、准备两段视频

public static void main(String[] args) {
        System.out.println("视频合并");
 
        String sourceFilePath="/Users/dongxr/Desktop/test.mp4";
        String mergeFielPath="/Users/dongxr/Desktop/test2.mp4";
 
        File file=new File(sourceFilePath);
        //抓取资源
        FFmpegFrameGrabber frameGrabber1 = new FFmpegFrameGrabber(sourceFilePath);
        //待处理的视频文件
        FFmpegFrameGrabber frameGrabber2 = new FFmpegFrameGrabber(mergeFielPath);
        //
        Frame frame = null;
        Frame mergeFrame = null;
        FFmpegFrameRecorder recorder = null;
        String fileName = null;
        try{
            //开始抓取
            frameGrabber1.start();
            frameGrabber2.start();
            //随机数
            Random random=new Random();
            fileName = file.getAbsolutePath() + random.nextInt(100)+".mp4";
            System.out.println("--文件名-->>"+fileName);
            recorder = new FFmpegFrameRecorder(fileName, frameGrabber1.getImageWidth(), frameGrabber1.getImageHeight(), frameGrabber1.getAudioChannels());
//            recorder.setFormat("mp4");
            recorder.setSampleRate(frameGrabber1.getSampleRate());
            recorder.setFrameRate(frameGrabber1.getFrameRate());
            recorder.setTimestamp(frameGrabber1.getTimestamp());
            recorder.setVideoBitrate(frameGrabber1.getVideoBitrate());
            recorder.setVideoCodec(frameGrabber1.getVideoCodec());
 
            recorder.start();
            int index=0;
            while (true){
                frame=frameGrabber1.grabFrame();
                if(frame ==null){
                    break;
                }
//                System.out.println("音频=="+(frame.samples ==null)+"视频=="+ (frame.image==null));
                //帧图片
                if(frame.image !=null){
                    IplImage iplImage = Java2DFrameUtils.toIplImage(frame);
                    BufferedImage buffImg=Java2DFrameUtils.toBufferedImage(iplImage);
                    //图片绘制
                    mergeFrame=frameGrabber2.grabFrame();
                    if(mergeFrame !=null){
                        System.out.println("--合并视频--"+(mergeFrame.image ==null));
                        //判断获取图片帧是否为空，如果为空就在获取一帧，循环判断
                        while (mergeFrame.image ==null){
                            mergeFrame=frameGrabber2.grabFrame();
                        }
                        Graphics2D graphics = buffImg.createGraphics();
                        Image mergeBuffer = Java2DFrameUtils.toBufferedImage(mergeFrame);
                        graphics.drawImage(mergeBuffer,0,100,200,150,null);
                        graphics.dispose();
                    }
                    //新的一帧
                    Frame newFrame = Java2DFrameUtils.toFrame(buffImg);
                    recorder.record(newFrame);
                }
                //设置音频
                if(frame.samples !=null){
                    recorder.recordSamples(frame.sampleRate,frame.audioChannels,frame.samples);
                }
                System.out.println("帧值="+index);
                index ++;
            }
            recorder.stop();
            recorder.release();
            frameGrabber2.stop();
            frameGrabber1.stop();
 
        }catch (Exception e){
            e.printStackTrace();
        }
    }

　　

3、引入文件

import org.bytedeco.javacv.FFmpegFrameGrabber;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.Frame;
import org.bytedeco.javacv.Java2DFrameUtils;
import org.bytedeco.opencv.opencv_core.IplImage;
 
import java.awt.*;
import java.awt.image.BufferedImage;

　　

备注：嵌入的画面自己可以根据坐标随意摆放

原文地址：https://blog.csdn.net/weixin_37852133/article/details/115891140