Android camera2 api galaxy s7

Question

我正在编写一个应用程序,用于记录手机中的视频并将其上传到服务器.适用于除Galaxy S7之外的任何设备.在Galaxy S7上,录制的视频文件只包含音频,没有视频或一个视频帧.这在手机上创建的临时文件中是正确的,而不仅仅是上传到服务器的临时文件.我正在使用Camera2 API,我尝试过使用前后摄像头.

我尝试过我的代码和这两个示例应用程序:https : //developer.android.com/samples/Camera2Video/project.html https://github.com/googlesamples/android-Camera2Video/blob/master/Application/的src /主/ JAVA/COM /示例/机器人/ camera2video/Camera2VideoFragment.java

生成的视频文件似乎没问题,这里是编解码器信息:Stream 0类型:视频编解码器:H264 - MPEG-4 AVC(第10部分)(avc1)语言:英语分辨率:960x720显示分辨率:960x720帧率:29.055091

流1类型:音频编解码器:MPEG AAC音频(mp4a)语言:英语频道:立体声采样率:16000 Hz

Answer 1

经过几天的工作我找到了答案。

三星 Galaxy S7（我认为是 S6）有一个错误，导致编码混乱。修复方法是使用下面的函数重新编码。

请注意，您的 gradle 中需要此依赖项：compile 'com.googlecode.mp4parser:isoparser:1.1.22'

    public void fixSamsungBug()
{
    DataSource channel = null;
    try
    {
        channel = new FileDataSourceImpl(app.dataMgr.videoFileURL);
    } catch (FileNotFoundException e)
    {
        e.printStackTrace();
    }

    IsoFile isoFile = null;

    try
    {
        isoFile = new IsoFile(channel);
    } catch (IOException e)
    {
        e.printStackTrace();
    }

    List<TrackBox> trackBoxes = isoFile.getMovieBox().getBoxes(TrackBox.class);
    boolean sampleError = false;
    for (TrackBox trackBox : trackBoxes) {
        TimeToSampleBox.Entry firstEntry = trackBox.getMediaBox().getMediaInformationBox().getSampleTableBox().getTimeToSampleBox().getEntries().get(0);

        // Detect if first sample is a problem and fix it in isoFile
        // This is a hack. The audio deltas are 1024 for my files, and video deltas about 3000
        // 10000 seems sufficient since for 30 fps the normal delta is about 3000
        if(firstEntry.getDelta() > 10000) {
            sampleError = true;
            firstEntry.setDelta(3000);
        }
    }

    if(sampleError) {
        Log.d("gpinterviewandroid", "Sample error! correcting...");
        Movie movie = new Movie();
        for (TrackBox trackBox : trackBoxes) {
            movie.addTrack(new Mp4TrackImpl(channel.toString() + "[" + trackBox.getTrackHeaderBox().getTrackId() + "]" , trackBox));
        }
        movie.setMatrix(isoFile.getMovieBox().getMovieHeaderBox().getMatrix());
        Container out = new DefaultMp4Builder().build(movie);

        //delete file first!
        File file = new File(app.dataMgr.videoFileURL);
        boolean deleted = file.delete();


        FileChannel fc = null;
        try
        {
            //fc = new FileOutputStream(new File(app.dataMgr.videoFileURL)).getChannel();
            fc = new RandomAccessFile(app.dataMgr.videoFileURL, "rw").getChannel();
        } catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }

        try
        {
            out.writeContainer(fc);
            fc.close();
        } catch (IOException e)
        {
            e.printStackTrace();
        }

        Log.d("gpinterviewandroid", "Finished correcting raw video");
    }
}