Question

我正在使用Android摄像头视频流一段时间。我首先尝试了libstreaming包，但问题是this。所以我按照Google相机示例code编写了我自己的课程。但在我将ParcelFileDescriptor传递给mMediaRecorder.setOutputFile之后，我收到了此错误：

E/MediaRecorder: start failed: -2147483648
D/AndroidRuntime: Shutting down VM
E/AndroidRuntime: FATAL EXCEPTION: main
Process: sharedcameraandroid, PID: 14868
java.lang.RuntimeException: start failed.
at android.media.MediaRecorder.start(Native Method)
at MainActivity.startRecordingVideo(MainActivity.java:268)
at MainActivity.setUpMediaRecorder(MainActivity.java:257)

所以我在网上查了一下this（将输出格式更改为3GPP），this更改为add Thread.sleep和this。但他们都没有工作。所以我来问是否有人知道如何解决这个问题。

这是我的代码：

private void setUpMediaRecorder() throws IOException {
    final Activity activity = mActivity;
    if (null == activity) {
        return;
    }

    ParcelFileDescriptor[] parcelFileDescriptors = ParcelFileDescriptor.createPipe();
    mParcelRead = new ParcelFileDescriptor(parcelFileDescriptors[0]);
    mParcelWrite  = new ParcelFileDescriptor(parcelFileDescriptors[1]);

    mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);
    mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
//        mMediaRecorder.setOutputFile((new File(mActivity.getExternalFilesDir(null), "video.mp4")).getAbsolutePath());
//        Log.d(TAG, (new File(mActivity.getExternalFilesDir(null), "video.mp4")).getAbsolutePath());
    mMediaRecorder.setOutputFile(mParcelWrite.getFileDescriptor());
    mMediaRecorder.setVideoEncodingBitRate(10000000);
    mMediaRecorder.setVideoFrameRate(30);
    // mMediaRecorder.setVideoSize(mVideoSize.getWidth(), mVideoSize.getHeight());
    mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
    mMediaRecorder.prepare();
    startRecordingVideo();
    // https://stackoverflow.com/questions/14598299/how-to-record-video-on-android-into-stream

    InputStream is = new ParcelFileDescriptor.AutoCloseInputStream(mParcelRead);
    RtspClient client = new RtspClient(is, releaseSampleFile());
    client.startStream();
}

如果我用注释行更改mMediaRecorder.setOutputFile(mParcelWrite.getFileDescriptor());，一切都很好。

感谢您的帮助！

Android MediaRecorder：启动失败：-2147483648

0 个答案: