While taking video camera.startCapturingVideo(null); automatically call the public void onVideoTaken(File video)

Question

I use the following library for camera and video

https://github.com/natario1/CameraView

While I take video sometimes its work fine for me. But sometimes While taking a video camera.startCapturingVideo(null); automatically call the public void onVideoTaken(File video) .

Camera activity code:

Oncreate():

 setContentView(R.layout.activity_home);
        ButterKnife.bind(this);
        Fabric.with(this, new Crashlytics());
        logUser();
        view_group_photo.performClick();
        if (BuildConfig.DEBUG) {
            CameraLogger.setLogLevel(CameraLogger.LEVEL_VERBOSE);
        }
        recorder = new MediaRecorder();
        camera = findViewById(R.id.camera);
        camera.destroy();
        camera.start();
        camera.addCameraListener(new CameraListener() {
            @Override
            public void onCameraError(@NonNull CameraException exception) {
                super.onCameraError(exception);
                camera.stop();
                camera.start();
            }

            @Override
            public void onPictureTaken(byte[] jpeg) {
                super.onPictureTaken(jpeg);
                Long tsLong = System.currentTimeMillis() / 1000;
                String ts = tsLong.toString();
                try {
                    File root = new File(FILE_PATH_IMAGE);
                    if (!root.exists()) {
                        root.mkdirs();
                    }
                    @SuppressLint("SdCardPath") File myFile = new File(FILE_PATH_IMAGE + ts + FILE_EXTENSION_IMAGE);
                    myFile.createNewFile();
                    FileOutputStream stream = new FileOutputStream(myFile);
                    stream.write(jpeg);
                    stream.close();
                    Intent webViewIntent = new Intent(HomeActivity.this, ImageCropActivity.class);
                    Bundle bundle = new Bundle();
                    bundle.putString("file_path", FILE_PATH_IMAGE + ts + FILE_EXTENSION_IMAGE);
                    webViewIntent.putExtras(bundle);
                    webViewIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                    startActivity(webViewIntent);
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }

            @Override
            public void onVideoTaken(File video) {
                super.onVideoTaken(video);
                Long tsLong = System.currentTimeMillis() / 1000;
                String ts = tsLong.toString();
                try {
                    File root = new File(FILE_PATH_VIDEO);
                    if (!root.exists()) {
                        root.mkdirs();
                    }
                    @SuppressLint("SdCardPath") File myFile = new File(FILE_PATH_VIDEO + ts + FILE_EXTENSION_VIDEO);
                    myFile.createNewFile();
                    try (InputStream in = new FileInputStream(video)) {
                        try (OutputStream out = new FileOutputStream(myFile)) {
                            // Transfer bytes from in to out
                            byte[] buf = new byte[1024];
                            int len;
                            while ((len = in.read(buf)) > 0) {
                                out.write(buf, 0, len);
                            }
                            out.close();
                        }
                    }
                    AddFileToPojo("2", FILE_TYPE_VIDEO, FILE_PATH_VIDEO + ts + FILE_EXTENSION_VIDEO);
                    IntentFunction(HomeActivity.this, ReportIncidentActivity.class);
                } catch (IOException e) {
                    Log.e("error ", "video error" + e.getMessage());
                }
            }
        });


        mGoogleApiClient = new GoogleApiClient
                .Builder(this)
                .enableAutoManage(this, 0, HomeActivity.this)
                .addApi(Places.GEO_DATA_API)
                .addApi(Places.PLACE_DETECTION_API)
                .addConnectionCallbacks(HomeActivity.this)
                .addOnConnectionFailedListener(this)
                .build();

        guessCurrentPlace();
        // get the gesture detector
        mDetector = new GestureDetector(this, new MyGestureListener());
        if (camera.getFlash() == Flash.ON) {
            imageViewFlash.setImageDrawable(getResources().getDrawable(R.drawable.flash));
        } else {
            imageViewFlash.setImageDrawable(getResources().getDrawable(R.drawable.flash_off));
        }

        viewGroupProgressLoad.setOnTouchListener(touchListener);

        ConnectivityManager connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
        assert connectivityManager != null;
        NetworkInfo networkInfo = connectivityManager.getActiveNetworkInfo();
        if (networkInfo != null && networkInfo.isConnected()) {
            ConstantVariables.INTERNET_CONNECTION = true;
            if (DEBUG) {
                Log.i("", ":: " + ConstantVariables.INTERNET_CONNECTION);
            }
        } else {
            ConstantFunctions.IntentFunction(getApplicationContext(), NoInternetActivity.class);
            ConstantVariables.INTERNET_CONNECTION = false;
            if (DEBUG) {
                Log.i("", ":: " + ConstantVariables.INTERNET_CONNECTION);
            }
        }

Camera video record fn();

 if (camera.getSessionType() == SessionType.PICTURE) {
            camera.setSessionType(SessionType.VIDEO);
        }
        if (camera.getSessionType() != SessionType.VIDEO) {
            return;
        }
        if (mCapturingPicture || mCapturingVideo) return;
        mCapturingVideo = true;
        /*camera.setVideoMaxSize(1000000);*/
        camera.setVideoMaxDuration(300000);
        camera.startCapturingVideo(null);

camera video stop fn();

 camera.stopCapturingVideo();
 camera.destroy();
 myCountDownTimer.cancel();
 isSpeakButtonLongPressed = false;

Log::

I/CameraController: Restart: returned from start. Dispatching. State: STATE_STARTED
I/CameraCallbacks: dispatchOnCameraOpened com.otaliastudios.cameraview.CameraOptions@61755df
W/MediaRecorder: mediarecorder went away with unhandled events
W/MediaRecorder: mediarecorder went away with unhandled events
I/CameraController: Stop: executing. State: STATE_STARTED
Stop: about to call onStop()
I/Camera1: onStop: About to clean up.
onStop: Clean up. Ending video.
endVideoImmediately: is capturing: false
onStop: Clean up. Stopping preview.
I/Camera1: onStop: Clean up. Stopped preview.
onStop: Clean up. Releasing camera.
I/Camera1: onStop: Clean up. Released camera.
W/Camera1: onStop: Clean up. Returning.
I/CameraController: Stop: returned from onStop(). Dispatching.
I/CameraCallbacks: dispatchOnCameraClosed
E/MediaMetadataRetrieverJNI: getFrameAtTime: videoFrame is a NULL pointer
I/Choreographer: Skipped 67 frames! The application may be doing too much work on its main thread.
I/CameraPreview: crop: applied scaleX= 1.1407409
crop: applied scaleY= 1.0

Answer 1

I update the code with,

final Handler handler = new Handler();
        handler.postDelayed(new Runnable() {
            @Override
            public void run() {
                camera.startCapturingVideo(null);
            }
        }, 1000);

I give 1 sec delay because not all time the startCapturingVideo intialize and start record .Becase the hardware not responsd quickly on some occation. So the execution to next line got error due to the startCapturingVideo not intiated.