Android Video Recording using Media Recorder is Not working

问题

I am trying to Record a Video, But It's getting crash at Media Record starts and Media Record Prepare .please Help Me... Here Is My Code...

private boolean startRecording() {
        camera.unlock();
        try {
        mediaRecorder = new MediaRecorder();
        mediaRecorder.setOnErrorListener(new MediaRecorder.OnErrorListener() {
            @Override
            public void onError(MediaRecorder mr, int what, int extra) {
                Log.i(TAG, "Error");
            }
        });
            second=0;
            minute=0;
            recordCountTimer = new CountDownTimer(Long.MAX_VALUE,1000) {
                @Override
                public void onTick(long millisUntilFinished) {
                    second++;
                    if(second>=60){
                        second=0;
                        minute++;
                    }
                    recordCount.setText(String.format("%02d:%02d",minute,second));
                }

                @Override
                public void onFinish() {
                    finish();
                }
            }.start();
        mediaRecorder.setCamera(camera);
        mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
            Log.d(TAG, "A");
        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
        mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
            Log.e(TAG, "B");
        mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH));
        defaultVideoPath= FileManger.getOutputMediaFile(MEDIA_TYPE_VIDEO).getAbsolutePath();
//        uriVid = Uri.parse(FileManger.getOutputMediaFile(MEDIA_TYPE_VIDEO).getAbsolutePath());
//        defaultVideoPath = getRealPathFromUri(uriVid);
        mediaRecorder.setOutputFile(defaultVideoPath);
        mediaRecorder.setVideoSize(recordingCameraSurface.getWidth(), recordingCameraSurface.getHeight());
        mediaRecorder.setVideoFrameRate(20);
            Log.v(TAG, "C");
        mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
        mediaRecorder.setMaxFileSize(50000);
        mediaRecorder.prepare();
            Log.w(TAG, "D");
        mediaRecorder.start();
            Log.e(TAG, "E");
        } catch (IOException e) {
            releaseMediaRecorder();
            return false;
        }catch (IllegalStateException t){
            releaseMediaRecorder();
            return  false;
        }

        return true;
    }

It's giving like

RECORDER_OK﹕ B
MediaRecorder﹕ setOutputFormat called in an invalid state: 4

and Here I am Going to next Activity:

Intent intent  = new Intent(RecordBuyPage.this,CheckAndSaveActivity.class);
            intent.putExtra("VIDEOFILEPATH", defaultVideoPath);
            startActivity(intent);

and in the next Activity i am getting the path null like:

 player.setDataSource(getIntent().getStringExtra("VIDEOFILEPATH"));

I think My Order Of Calling Media Recorder Is Correct But it also getting trouble at:

 mediarecoreder.prepare().

Please Give Some Valid Solution, I tried a lot From Stack overflow, but it's not working.... I think Video Is Not Recording, because when I passed it through intent it's taking null...

回答1:

I hope you followed this link of sample code(Media Recorder) https://github.com/googlesamples/android-MediaRecorder

and it has some bugs in it to record media in portrait mode so to fix this issue please follow this link

and in this link you will get your media path where it stored and you can easily pass it to another activity. Have a look I hope it helps you.

to get the path of media on stop capturing you can do this on your CaptureClick method

Log.d("Video file path", CameraHelper.getOutputMediaFile(
                        CameraHelper.MEDIA_TYPE_VIDEO).toString());

and complete button OnClickListener

public void onCaptureClick(View view) {
        if (isRecording) {
            // BEGIN_INCLUDE(stop_release_media_recorder)

            // stop recording and release camera
            mMediaRecorder.stop();  // stop the recording
            releaseMediaRecorder(); // release the MediaRecorder object
            mCamera.lock();         // take camera access back from MediaRecorder

            // inform the user that recording has stopped
            setCaptureButtonText("Capture");
            isRecording = false;
            releaseCamera();
            Log.d("Video file path", CameraHelper.getOutputMediaFile(
                    CameraHelper.MEDIA_TYPE_VIDEO).toString());
            // END_INCLUDE(stop_release_media_recorder)

        } else {

            // BEGIN_INCLUDE(prepare_start_media_recorder)

            new MediaPrepareTask().execute(null, null, null);

            // END_INCLUDE(prepare_start_media_recorder)

        }
    }

Please follow these two links provided above, it might solve your issue.

回答2:

try this

public class VideoCapture extends Activity implements OnClickListener 
,SurfaceHolder.Callback {

MediaRecorder recorder;
SurfaceHolder holder;
boolean recording = false;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_NO_TITLE);
    getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);

    recorder = new MediaRecorder();
    initRecorder();
    setContentView(R.layout.main);

    SurfaceView cameraView = (SurfaceView) findViewById(R.id.CameraView);
    holder = cameraView.getHolder();
    holder.addCallback(this);
    holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);

    cameraView.setClickable(true);
    cameraView.setOnClickListener(this);
}

private void initRecorder() {
    recorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
    recorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT);

    CamcorderProfile cpHigh = CamcorderProfile
            .get(CamcorderProfile.QUALITY_HIGH);
    recorder.setProfile(cpHigh);
    recorder.setOutputFile("/sdcard/videocapture_example.mp4");
    recorder.setMaxDuration(50000); // 50 seconds
    recorder.setMaxFileSize(5000000); // Approximately 5 megabytes
}

private void prepareRecorder() {
    recorder.setPreviewDisplay(holder.getSurface());

    try {
        recorder.prepare();
    } catch (IllegalStateException e) {
        e.printStackTrace();
        finish();
    } catch (IOException e) {
        e.printStackTrace();
        finish();
    }
}

public void onClick(View v) {
    if (recording) {
        recorder.stop();
        recording = false;

        // Let's initRecorder so we can record again
        initRecorder();
        prepareRecorder();
    } else {
        recording = true;
        recorder.start();
    }
}

public void surfaceCreated(SurfaceHolder holder) {
    prepareRecorder();
}

public void surfaceChanged(SurfaceHolder holder, int format, int width,
        int height) {
}

public void surfaceDestroyed(SurfaceHolder holder) {
    if (recording) {
        recorder.stop();
        recording = false;
    }
    recorder.release();
    finish();
}
}


 Include Permissions in Manifest file :

 <uses-permission android:name="android.permission.RECORD_AUDIO" />
 <uses-permission android:name="android.permission.CAMERA" />
 <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 

来源：https://stackoverflow.com/questions/33034137/android-video-recording-using-media-recorder-is-not-working