maven配置阿里云镜像,包比较大
一、依赖
<dependency>
<groupId>org.bytedeco</groupId>
<artifactId>javacv-platform</artifactId>
<version>1.5.4</version>
</dependency>
二、工具类
package com.cc.demo.unit;
import org.bytedeco.ffmpeg.global.avutil;
import org.bytedeco.javacv.FFmpegFrameRecorder;
import org.bytedeco.javacv.FrameRecorder;
import org.bytedeco.javacv.Java2DFrameConverter;
import org.bytedeco.ffmpeg.global.avcodec;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
public class videoUtil {
public static void createmp4(String outpath, String inputpath, int time) throws FrameRecorder.Exception {
File folder = new File(outpath);
if (!folder.exists()) {
folder.mkdirs();
}
//合成的MP4
String mp4SavePath = outpath + System.currentTimeMillis() + ".mp4";
int width = 1600;
int height = 900;
//读取所有图片
File file = new File(inputpath);
File[] files = file.listFiles();
Map<Integer, File> imgMap = new HashMap<Integer, File>();
int num = 0;
for (File imgFile : files) {
imgMap.put(num, imgFile);
num++;
}
create(mp4SavePath, imgMap, width, height, time);
}
private static void create(String mp4SavePath, Map<Integer, File> imgMap, int width, int height, int time) throws FrameRecorder.Exception, FrameRecorder.Exception {
//视频宽高最好是按照常见的视频的宽高 16:9 或者 9:16
FFmpegFrameRecorder recorder = new FFmpegFrameRecorder(mp4SavePath, width, height);
//设置视频编码层模式
recorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
//设置视频为25帧每秒
recorder.setFrameRate(25);
//设置视频图像数据格式
recorder.setPixelFormat(avutil.AV_PIX_FMT_YUV420P);
recorder.setFormat("mp4");
try {
recorder.start();
Java2DFrameConverter converter = new Java2DFrameConverter();
//根据文件数量定义视频时长
for (int i = 0; i < imgMap.size(); i++) {
BufferedImage read = ImageIO.read(imgMap.get(i));
for (int j = 0; j < 25 * time; j++) {
recorder.record(converter.getFrame(read));
}
}
} catch (Exception e) {
e.printStackTrace();
} finally {
//最后一定要结束并释放资源
recorder.stop();
recorder.release();
}
}
}
三、测试
package com.xx.demo;
import com.xx.demo.unit.videoUtil;
import org.bytedeco.javacv.FrameRecorder;
import org.junit.jupiter.api.Test;
class DemoApplicationTests {
@Test
void contextLoads() throws FrameRecorder.Exception {
//输入文件目录
String img = "C:\\Users\\yjtzf\\Desktop\\file";
//输出文件目录
String mp4SavePath = "C:\\Users\\yjtzf\\Desktop\\mp4\\";
//每张图片显示时间
int time=3;
videoUtil.createmp4(mp4SavePath,img,time);
}
}
5张图片,每张3秒,共15秒。