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如何在android中合并两个或多个mp3音频文件？

我正在尝试合并mp3音频文件但不成功. 这是我的代码.

public static void meargeAudio(List<File> filesToMearge){
    while (filesToMearge.size()!=1){
        try {
            FileInputStream fistream1 = new FileInputStream(new File(filesToMearge.get(0).getPath()));  //(/storage/emulated/0/Audio Notes/1455194356500.mp3) first source file
            FileInputStream fistream2 = new FileInputStream(new File(filesToMearge.get(1).getPath()));//second source file

            File file1 = new File(filesToMearge.get(0).getPath());
            boolean deleted = file1.delete();
            File file2 = new File(filesToMearge.get(1).getPath());
            boolean deleted1 = file2.delete();

            SequenceInputStream sistream = new SequenceInputStream(fistream1,fistream2);
            FileOutputStream fostream = new FileOutputStream(new File(filesToMearge.get(0).getPath()),true);//destinationfile

            int temp;

            while ((temp = sistream.read()) != -1) {
                // System.out.print( (char) temp ); // to print at DOS prompt
                fostream.write(temp);   // to write to file
            }

            filesToMearge.add(0,new File(filesToMearge.get(0).getPath()));
            filesToMearge.remove(1);
            filesToMearge.remove(1);

            fostream.close();
            sistream.close();
            fistream1.close();
            fistream2.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

}

例如

firstFileSize = 12kb

secondFileSize = 10kb

finalfileSize = 22KB

尺寸准确但缺少声音

没有错误,但结果我发现finalfile只包含第一个文件音频第二个文件音频丢失.

不知道是什么问题.任何人都知道解决方案对我有帮助.

谢谢

解决方法

使用mp4parser解决了它

import com.googlecode.mp4parser.authoring.Movie;
import com.googlecode.mp4parser.authoring.Track;
import com.googlecode.mp4parser.authoring.builder.DefaultMp4Builder;
import com.googlecode.mp4parser.authoring.container.mp4.MovieCreator;
import com.googlecode.mp4parser.authoring.tracks.AppendTrack;

对于你的情况,我相信这样的事情应该有效：

public static void mergeAudio(List<File> filesToMerge) {

    String output = Environment.getExternalStorageDirectory().getAbsolutePath() + "output.mp3";

    while (filesToMerge.size()!=1){

        try {

            String[] videoUris = new String[]{
                filesToMerge.get(0).getPath(),filesToMerge.get(0).getPath()
            };

            List<Track> videoTracks = new LinkedList<Track>();
            List<Track> audioTracks = new LinkedList<Track>();

            for (Movie m : inMovies) {
                for (Track t : m.getTracks()) {
                    if (t.getHandler().equals("soun")) {
                        audioTracks.add(t);
                    }
                    if (t.getHandler().equals("vide")) {
                        videoTracks.add(t);
                    }
                }
            }

            Movie result = new Movie();

            if (!audioTracks.isEmpty()) {
                result.addTrack(new AppendTrack(audioTracks.toArray(new Track[audioTracks.size()])));
            }
            if (!videoTracks.isEmpty()) {
                result.addTrack(new AppendTrack(videoTracks.toArray(new Track[videoTracks.size()])));
            }

            Container out = new DefaultMp4Builder().build(result);

            FileChannel fc = new RandomAccessFile(output,"rw").getChannel();
            out.writeContainer(fc);
            fc.close();

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

有一些答案表明,例如：

> Merging 2 audio files sequentially in android? > Concatenate two audio files and play resulting file

总结

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