mp4编码为hevc无法在浏览器播放的问题（java进行转码为h264）

╰+哭是因爲堅強的太久メ 2022-11-20 05:59 160阅读 0赞

## **原因** ##

由于摄像头硬件设备进行视频采集是mp4编码为hevc，无法在浏览器播放的问题，现阶段路浏览器无法支持这种编码格式

解决

在网上找了一上午找个个解决方案

<dependency>
                <groupId>ws.schild</groupId>
                <artifactId>jave-all-deps</artifactId>
                <version>2.7.3</version>
            </dependency>

java代码为

package com.ctfo.iles.utils;
    
    import cn.hutool.core.util.ObjectUtil;
    import lombok.extern.slf4j.Slf4j;
    import ws.schild.jave.*;
    
    import java.io.File;
    import java.net.URL;
    import java.nio.file.Paths;
    import java.util.HashMap;
    import java.util.Map;
    
    @Slf4j
    public class VideoUtils {
    
    
        private static Map<String, Integer> sizeBitRateMap;
    
        static {
            sizeBitRateMap = new HashMap<>();
            sizeBitRateMap.put("1920*1080", 4992);
            sizeBitRateMap.put("1280*720", 2496);
            sizeBitRateMap.put("1024*576", 1856);
            sizeBitRateMap.put("840*480", 1216);
            sizeBitRateMap.put("768*432", 1088);
            sizeBitRateMap.put("640*360", 896);
            sizeBitRateMap.put("424*240", 576);
        }
    
    
        public static void main(String[] args) {
            VideoUtils videoUtils = new VideoUtils();
             videoUtils.convertVideoToMP4(new File(                     
            "C:\\Users\\smallren\\Desktop\\6e99b226ff404ab696bcf1312cfe5b49_src.mp4"),
                    "C:\\Users\\smallren\\Desktop\\转.mp4");
    
    
    
        }
    
      
    
    
        /**
         * @param source     源文件
         * @param targetPath 转码后的路径
         */
        public static void convertVideoToMP4(File source, String targetPath) {
            MultimediaObject multimediaObject = new MultimediaObject(source);
            try {
                MultimediaInfo info = multimediaObject.getInfo();
                VideoInfo videoInfo = info.getVideo();
                VideoSize size = videoInfo.getSize();
                System.out.println("原视频宽：" + size.getWidth());
                System.out.println("原视频高：" + size.getHeight());
                System.out.println("原视频比特率：" + videoInfo.getBitRate() / 1000);
                System.out.println("原视频编码：" + videoInfo.getDecoder());
    
                Integer bitRate = sizeBitRateMap.get(size.getWidth() + "*" + size.getHeight());
                VideoAttributes video = new VideoAttributes();
                //设置视频编码
                video.setCodec("h264");
    
                if (ObjectUtil.isNotNull(bitRate)) {
                    //设置比特率
                    video.setBitRate(bitRate * 1000);
                }
                File target = new File(targetPath);
                AudioAttributes audio = new AudioAttributes();
                //设置编码器名称
                audio.setCodec("aac");
                EncodingAttributes attrs = new EncodingAttributes();
                //设置转换后的格式
                attrs.setFormat("mp4");
                attrs.setAudioAttributes(audio);
                attrs.setVideoAttributes(video);
                Encoder encoder = new Encoder();
                encoder.encode(multimediaObject, target, attrs);
                //花费毫秒数
    
                MultimediaObject multimediaObjectOfter = new MultimediaObject(Paths.get(targetPath).toFile());
                MultimediaInfo info1 = multimediaObjectOfter.getInfo();
                VideoInfo video1 = info1.getVideo();
                VideoSize size1 = video1.getSize();
    
                System.out.println("转换后视频宽：" + size1.getWidth());
                System.out.println("转换后视频高：" + size1.getHeight());
                System.out.println("转换后视频比特率：" + video1.getBitRate() / 1000);
                System.out.println("转换后视频编码：" + video1.getDecoder());
    
            } catch (EncoderException e) {
                e.printStackTrace();
            }
        }
    
    
    }

转码成功后就可以看到视频了