音频转mp3、视频转mp4实现

今天接到领导一个调研需求，音频文件转换为mp3,视频文件转换为mp4

pom.xml

   <dependency>
            <groupId>it.sauronsoftware</groupId>
            <artifactId>jave</artifactId>
            <version>1.0.2</version>
   </dependency>
        

工具类

/**
* https://ffmpeg.org/ffmpeg-codecs.html
* @date 2021/5/26 10:52
* @version: 1.0
*/
@Slf4j
public class FfmpegConvertUtils {
   /*编码类型 libmp3lame*/
   private static String LIBMP3LAME = "libmp3lame";
   /*编码类型 mpeg4*/
   private static String CODEC_MPEG4 = "mpeg4";
   /*输出比率*/
   private static int BIT_RATE_128 = 128000;
   /*输出比率*/
   private static int BIT_RATE_256 = 256000;

   /*输出比率*/
   private static int BIT_RATE_800 = 800000;
   /*通道数量*/
   private static int AUDIO_CHANNEL_COUNT = 2;
   /*采样比率*/
   private static int AUDIO_SAMPLING_RATE = 44100;
   /*输出格式*/
   private static String AUDIO_OUT_FORMAT = "mp3";

   /*输出格式*/
   private static String VIDEO_OUT_FORMAT = "mp4";


   public static boolean convertToMp3(String sourcePath, String targetPath) {
       File source = new File(sourcePath);
       if (!source.exists()) {
           throw new RuntimeException("输入文件不存在");
       }
       checkTargetFileDir(targetPath);
       File target = new File(targetPath);
       try {
           AudioAttributes audio = new AudioAttributes();

           audio.setCodec(LIBMP3LAME);

           audio.setBitRate(BIT_RATE_128);

           audio.setChannels(AUDIO_CHANNEL_COUNT);

           audio.setSamplingRate(AUDIO_SAMPLING_RATE);

           EncodingAttributes attrs = new EncodingAttributes();

           attrs.setFormat(AUDIO_OUT_FORMAT);

           attrs.setAudioAttributes(audio);

           Encoder encoder = new Encoder();

           encoder.encode(source, target, attrs);
           return true;
       } catch (Exception e) {
           log.error("convertToMp3 :{}", ExceptionUtils.getStackTrace(e));
           return false;
       }
   }


   public static boolean convertToMp4(String sourcePath, String targetPath) {
       File source = new File(sourcePath);
       if (!source.exists()) {
           throw new RuntimeException("输入文件不存在");
       }
       checkTargetFileDir(targetPath);
       File target = new File(targetPath);
       try {

           AudioAttributes audio = new AudioAttributes();
           audio.setCodec(LIBMP3LAME);
           audio.setBitRate(BIT_RATE_128);
           audio.setChannels(AUDIO_CHANNEL_COUNT);
           audio.setSamplingRate(AUDIO_SAMPLING_RATE);

           VideoAttributes video = new VideoAttributes();
           video.setCodec(CODEC_MPEG4);
           //清晰度 ，1080P最好在5Mbps/5120Kbps到8Mbps/8192Kbps之间，因为低于5Mbps不够清晰,而大于8Mbps视频文件会过大。
           video.setBitRate(BIT_RATE_800);
           //质量高低 1-35，值越小，质量越高
           video.setFrameRate(3);
//            video.setSize(new VideoSize(1080,800));
           EncodingAttributes attrs = new EncodingAttributes();
           attrs.setFormat(VIDEO_OUT_FORMAT);
           attrs.setAudioAttributes(audio);
           attrs.setVideoAttributes(video);
           Encoder encoder = new Encoder();
/*            System.out.println(JSONObject.toJSONString(encoder.getVideoEncoders()));
           System.out.println(JSONObject.toJSONString(encoder.getSupportedEncodingFormats()));*/
           encoder.encode(source, target, attrs);


           return true;
       } catch (Exception e) {
           log.error("convertToMp4 :{}", ExceptionUtils.getStackTrace(e));
           return false;
       }
   }


   /**
    * 验证文件目录是否存在，不存在就创建
    *
    * @param targetFile 文件路径
    * @return
    */
   public static void checkTargetFileDir(String targetFile) {
       String dirPath = targetFile.substring(0, targetFile.lastIndexOf(File.separator) + 1);
       File dir = new File(dirPath);
       if (!dir.exists()) {
           dir.mkdirs();
       }
   }

   public static void main(String[] args) {
       convertToMp3("E:\\videotest\\音频素材\\ape1.ape","E:\\videotest\\output\\ape1.mp3");
       System.out.println("开始处理");
       long start = System.currentTimeMillis();
       convertToMp4("E:\\videotest\\视频素材\\sdf.wmv", "E:\\videotest\\output\\a1.mp4");
       System.out.println("耗时：" + (System.currentTimeMillis() - start)+"ms");
   }