合并2个音频文件，依次机器人？ [英] Merging 2 audio files sequentially in android?

问题描述

如何合并两个音频文件到android平台的单个文件。 也就是说，如果我有两个音频文件，即A和B.Please给我的code创建由B A.后追加一个新的音频文件C 是否有任何需要的音频文件转换为字节/短阵?? ...

how can merge two audio files to a single file in android platform. that is if i have two audio files namely A and B.Please give me the code to create a new audio file C that is appended by B after A. Is there any need to convert the audio files to byte/short array ??...

我不喜欢这一点，但它扮演一号文件只。

i did like this but it plays 1st file only.

            File firstFile=new File("/mnt/sdcard/Android/data/Dictation/Audio/Dict136.3gp");

            File secondFile=new File("/mnt/sdcard/Android/data/Dictation/Audio/Dict139.3gp");

            System.out.println("1 file:::::"+firstFile+"\n 2nd file::"+secondFile);


           FileInputStream fistream1;
        try {
            fistream1 = new FileInputStream(firstFile);
            FileInputStream fistream2 = new FileInputStream(secondFile);//second source file



            SequenceInputStream sistream = new SequenceInputStream(fistream1, fistream2);
            FileOutputStream fostream = new FileOutputStream("/mnt/sdcard/Android/data/Dictation/Audio/merged.3gp");//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
            }



            filePath="/mnt/sdcard/Android/data/Dictation/Audio/merged.3gp";
            playAudio(filePath);


            fostream.close();
            fistream1.close();
            fistream2.close();

在此先感谢。

推荐答案

要结合起来，对一个3GP或MP4容器的音频文件，你应该能够使用的 https://github.com/sannies/mp4parser 退房样本： <一href="https://github.com/sannies/mp4parser/blob/master/examples/src/main/java/com/google$c$c/mp4parser/AppendExample.java" rel="nofollow">https://github.com/sannies/mp4parser/blob/master/examples/src/main/java/com/google$c$c/mp4parser/AppendExample.java

To combine audio files that are in an 3gp or mp4 container you should be able to use https://github.com/sannies/mp4parser Check out the samples: https://github.com/sannies/mp4parser/blob/master/examples/src/main/java/com/googlecode/mp4parser/AppendExample.java

获得mp4parser罐（通过maventral），并做到这一点：

get the mp4parser jar (via maventral) and do this:

        File firstFile=new File("/mnt/sdcard/Android/data/Dictation/Audio/Dict136.3gp");
        File secondFile=new File("/mnt/sdcard/Android/data/Dictation/Audio/Dict139.3gp");

        Movie movieA = MovieCreator.build(firstFile);
        Movie movieB = MovieCreator.build(secondFile);
        final Movie finalMovie = new Movie();

        List<Track> audioTracks = new ArrayList<>();
        for (Movie movie : new Movie[] { movieA, movieB}) {
            for (Track track : movie.getTracks()) {
                if (track.getHandler().equals("soun")) {
                    audioTracks.add(track);
                }
            }
        }
        finalMovie.addTrack(new AppendTrack(audioTracks.toArray(new Track[audioTracks.size()])));

        final Container container = new DefaultMp4Builder().build(finalMovie);
        File mergedFile = new File("/mnt/sdcard/Android/data/Dictation/Audio/merged.3gp");
        final FileOutputStream fos = new FileOutputStream(mergedFile);
        FileChannel fc = new RandomAccessFile(mergedFile, "rw").getChannel();
        container.writeContainer(fc);
        fc.close();

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