Làm cách nào để ghi video trực tuyến?

Question

Tôi có thể phát Phát trực tiếp video với kết nối máy chủ http trong SurfaceView. Và tôi đã tạo ContextMenu để quay video bằng cách thêm các mục menu Bắt đầuRecording và StopRecording. Nhưng tôi có thể ghi lại Video Camera bằng cách gọi mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);

Ở đây tôi muốn đặt Nguồn video làm Nguồn video trực tuyến. Có khả năng làm điều này không?

Nhưng tôi muốn ghi lại Video phát trực tuyến khi đang phát. Bạn có thể vui lòng cho tôi biết cách ghi âm trong khi đang phát không?

Bạn vui lòng cung cấp bất kỳ mã mẫu nào cho sự cố này không?

mẫu mã của tôi hiển thị dưới đây:

main.xml:

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical" android:layout_width="fill_parent" 
android:layout_height="fill_parent"> 

<FrameLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="@+id/frameLayoutRoot"> 

    <SurfaceView android:id="@+id/surfaceViewFrame" android:layout_gravity="center" android:layout_height="wrap_content" android:layout_width="wrap_content"></SurfaceView> 

    <LinearLayout android:layout_width="fill_parent" android:id="@+id/linearLayoutMediaController" android:layout_height="wrap_content" android:paddingBottom="5dp" 
     android:paddingTop="5dp" android:layout_gravity="bottom" android:gravity="center_vertical" android:background="@color/media_controller_bg_color"> 

     <TextView android:layout_width="wrap_content" android:id="@+id/textViewPlayed" android:layout_marginLeft="5dp" android:layout_marginRight="5dp" 
      android:textColor="@color/media_controller_text_color" android:textStyle="bold" android:text="0:00:00" android:padding="0dp" android:textSize="13sp" android:gravity="center" 
      android:layout_height="wrap_content"></TextView> 

     <SeekBar android:id="@+id/seekBarProgress" android:layout_weight="1" style="@style/MyCustomProgressStyle" android:layout_width="fill_parent" 
      android:layout_height="wrap_content" android:progress="50"></SeekBar> 
     <TextView android:layout_width="wrap_content" android:id="@+id/textViewLength" android:layout_marginLeft="5dp" android:layout_marginRight="5dp" 
      android:textColor="@color/media_controller_text_color" android:textStyle="bold" android:text="0:00:00" android:textSize="13sp" android:padding="0dp" android:gravity="center" 
      android:layout_height="wrap_content"></TextView> 

    </LinearLayout> 

    <ProgressBar style="?android:attr/progressBarStyleLarge" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" 
     android:id="@+id/progressBarWait"></ProgressBar> 

    <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:id="@+id/imageViewPauseIndicator" android:layout_gravity="center" 
     android:src="@drawable/pause_button"></ImageView> 
</FrameLayout> 

MediaPlayerDemo.java:

public class MediaPlayerDemo_Video extends Activity implements 
    OnBufferingUpdateListener, OnCompletionListener, OnPreparedListener,  OnClickListener, OnSeekCompleteListener, 
    Callback, OnSeekBarChangeListener, AnimationListener { 

private String path2 = "http://commonsware.com/misc/test2.3gp"; 
private String path = ""; 

    private static final String TAG = "MediaPlayerDemo"; 
private MediaRecorder mediaRecorder; 
private MediaPlayer mMediaPlayer; 
private SurfaceView surfaceViewFrame; 
private SurfaceHolder surfaceHolder; 
// private String path; 
private Bundle extras; 
private Animation hideMediaController; 
private LinearLayout linearLayoutMediaController; 
private SeekBar seekBarProgress; 
private TextView textViewPlayed; 
private TextView textViewLength; 
private ProgressBar progressBarWait; 
private ImageView imageViewPauseIndicator; 
private Timer updateTimer; 
AudioManager volume; 
int keyCode = 0; 
    KeyEvent keyEvent; 
    private MediaRecorder mVideoRecorder = null; 
    private Camera mCamera; 

@Override 
public void onCreate(Bundle icicle) { 
    super.onCreate(icicle); 
    setContentView(R.layout.mediaplayer_2); 

    linearLayoutMediaController = (LinearLayout)  findViewById(R.id.linearLayoutMediaController); 
    linearLayoutMediaController.setVisibility(View.GONE); 

     hideMediaController =  AnimationUtils.loadAnimation(MediaPlayerDemo_Video.this, R.anim.disapearing); 
    hideMediaController.setAnimationListener(this); 

    imageViewPauseIndicator = (ImageView) findViewById(R.id.imageViewPauseIndicator); 
    imageViewPauseIndicator.setVisibility(View.GONE); 

    textViewPlayed = (TextView) findViewById(R.id.textViewPlayed); 
    textViewLength = (TextView) findViewById(R.id.textViewLength); 

    surfaceViewFrame = (SurfaceView) findViewById(R.id.surfaceViewFrame); 
    surfaceViewFrame.setOnClickListener(this); 
    surfaceViewFrame.setClickable(false); 

    seekBarProgress = (SeekBar) findViewById(R.id.seekBarProgress); 
    seekBarProgress.setOnSeekBarChangeListener(this); 
      //  seekBarProgress.setProgress(0); 

    progressBarWait = (ProgressBar) findViewById(R.id.progressBarWait); 
    volume = (AudioManager) getSystemService(Context.AUDIO_SERVICE); 
    int maxVolume = volume.getStreamMaxVolume(AudioManager.STREAM_MUSIC); 
    int curVolume = volume.getStreamVolume(AudioManager.STREAM_MUSIC); 
    seekBarProgress.setMax(maxVolume); 
    seekBarProgress.setProgress(curVolume); 

    surfaceHolder = surfaceViewFrame.getHolder(); 
    surfaceHolder.addCallback(this); 
    surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 

    mMediaPlayer = new MediaPlayer(); 
    mMediaPlayer.setOnPreparedListener(this); 
    mMediaPlayer.setOnCompletionListener(this); 
    mMediaPlayer.setOnBufferingUpdateListener(this); 
    mMediaPlayer.setOnSeekCompleteListener(this); 
    mMediaPlayer.setScreenOnWhilePlaying(true); 
    mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC); 

    if (mMediaPlayer != null) { 
     if (!mMediaPlayer.isPlaying()) { 
      imageViewPauseIndicator.setVisibility(View.VISIBLE); 
     } 
    } 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    menu.add(0, 0, 0, "StartRecording"); 
    menu.add(0, 0, 0, "StopRecording"); 
    return super.onCreateOptionsMenu(menu); 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    switch (item.getItemId()) { 
    case 0: 

     if (mediaRecorder == null) 
      mediaRecorder = new MediaRecorder(); // Works well 

     mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface()); 

          mediaRecorder.setVideoSource(MediaRecorder.VideoSource.DEFAULT); 
    mediaRecorder.setOutputFile("/sdcard/DCIM/Camera/StreamLive.3gp"); 
    mediaRecorder.setMaxDuration(-1); 
    try { 
      mediaRecorder.prepare(); 
     } catch (IllegalStateException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } catch (IOException e) { 
      // TODO Auto-generated catch block 
      e.printStackTrace(); 
     } 
     break; 

    case 1: 
     mediaRecorder.stop(); 
     mediaRecorder.release(); 
     break; 

    default: 
     break; 
    } 
    return super.onOptionsItemSelected(item); 
} 

     private void playVideo() { 
     try { 
         mMediaPlayer.setDataSource(path); 
        } catch (IllegalArgumentException e) { 
         // TODO Auto-generated catch block 
         e.printStackTrace(); 
        } catch (IllegalStateException e) { 
         // TODO Auto-generated catch block 
         e.printStackTrace(); 
        } catch (IOException e) { 
         // TODO Auto-generated catch block 
         e.printStackTrace(); 
        } 
        mMediaPlayer.setDisplay(surfaceHolder); 
        try { 
         mMediaPlayer.prepare(); 
        } catch (IllegalStateException e) { 
         // TODO Auto-generated catch block 
         e.printStackTrace(); 
        } catch (IOException e) { 
         // TODO Auto-generated catch block 
         e.printStackTrace(); 
        } 
            } 

    public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) { 
    Log.d(TAG, "surfaceChanged called"); 

} 

public void surfaceDestroyed(SurfaceHolder surfaceholder) { 
    Log.d(TAG, "surfaceDestroyed called"); 
} 

public void surfaceCreated(SurfaceHolder holder) { 
    Log.d(TAG, "surfaceCreated called"); 
    playVideo(); 
} 

public void onPrepared(MediaPlayer mediaplayer) { 
    Log.i(TAG, "========== onPrepared ==========="); 
    int duration = mediaplayer.getDuration()/1000; // duration in seconds 
    seekBarProgress.setMax(duration); 
    textViewLength.setText(Utils.durationInSecondsToString(duration)); 
    progressBarWait.setVisibility(View.GONE); 


    // Get the dimensions of the video 
      int videoWidth = mMediaPlayer.getVideoWidth(); 
      int videoHeight = mMediaPlayer.getVideoHeight(); 
      float videoProportion = (float) videoWidth/(float)  videoHeight; 
      Log.i(TAG, "VIDEO SIZES: W: " + videoWidth + " H: " +  videoHeight + " PROP: " + videoProportion); 

      // Get the width of the screen 
      int screenWidth =   getWindowManager().getDefaultDisplay().getWidth(); 
      int screenHeight =   getWindowManager().getDefaultDisplay().getHeight(); 
      float screenProportion = (float) screenWidth/ (float)  screenHeight; 
      Log.i(TAG, "VIDEO SIZES: W: " + screenWidth + " H: " +  screenHeight + " PROP: " + screenProportion); 

      // Get the SurfaceView layout parameters 
      android.view.ViewGroup.LayoutParams lp =  surfaceViewFrame.getLayoutParams(); 

      if (videoProportion > screenProportion) { 
       lp.width = screenWidth; 
       lp.height = (int) ((float) screenWidth/ videoProportion); 
      } else { 
       lp.width = (int) (videoProportion * (float)  screenHeight); 
       lp.height = screenHeight; 
      } 

      // Commit the layout parameters 
      surfaceViewFrame.setLayoutParams(lp); 

      // Start video 
      if (!mMediaPlayer.isPlaying()) { 
       mMediaPlayer.start(); 
       updateMediaProgress(); 
        linearLayoutMediaController.setVisibility(View.VISIBLE); 
       hideMediaController(); 

      } 
      surfaceViewFrame.setClickable(true); 
} 

public void onCompletion(MediaPlayer mp) { 
    Log.d(TAG, "onCompletion called"); 
    mp.stop(); 
    if (updateTimer != null) { 
     updateTimer.cancel(); 
    } 
    //  mp.seekTo(0); 
    //  finish(); 
} 

public void onBufferingUpdate(MediaPlayer mp, int percent) { 
    Log.d(TAG, "onBufferingUpdate percent:" + percent); 
    int progress = (int) ((float) mp.getDuration() * ((float) percent/  (float) 100)); 
    seekBarProgress.setSecondaryProgress(progress/1000); 

    } 
} 

Answer 1

Vấn đề là như những gì tôi đối mặt d với âm thanh ghi trực tuyến trên Android .. Bạn có thể thử viết tiêu đề video (phụ thuộc vào định dạng video của bạn) để truyền trực tuyến và nối thêm dữ liệu khi bộ đệm được cập nhật..lưu vào bất cứ nơi nào bạn muốn .. Kiểm tra cách hoạt động của RehearsalAudioRecorder.