Android開發(fā)中怎么自定義一個(gè)視頻錄制功能

  mediaRecorder.reset();
  mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); //從照相機(jī)采集視頻
  mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC); 
  mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
  mediaRecorder.setVideoFrameRate(3); //每秒3幀
  mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263); //設(shè)置視頻編碼方式
  mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
  File videoFile = new File(Environment.getExternalStorageDirectory(), System.currentTimeMillis()+".3gp");
  mediaRecorder.setOutputFile(videoFile.getAbsolutePath());
  mediaRecorder.setPreviewDisplay(surfaceView.getHolder().getSurface());
  mediaRecorder.prepare();//預(yù)期準(zhǔn)備
  mediaRecorder.start();//開始刻錄
  mediaRecorder.stop();//停止刻錄

public class MediaRecorderActivity extends AppCompatActivity {

  private SurfaceView sv_mediarecorder_surface;
  private MediaRecorder mediaRecorder;
  private boolean isStartAndStop=false;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
      getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
      getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
    }
    setContentView(R.layout.activity_mediarecorder);
    //獲取SurfaceView
    sv_mediarecorder_surface = (SurfaceView) findViewById(R.id.sv_mediarecorder_surface);
    //實(shí)例化媒體錄制器
    mediaRecorder = new MediaRecorder();

  }
  //視頻錄制與暫停的方法
  public void startMediaCorder(View view){
    Button button= (Button) view;
    if (!isStartAndStop) {
      if (mediaRecorder==null){
        //實(shí)例化媒體錄制器
        mediaRecorder = new MediaRecorder();
      }
      mediaRecorder.reset();
      mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA); //從照相機(jī)采集視頻
      mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);//設(shè)置麥克風(fēng)
      //設(shè)置保存的格式
      mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
      //設(shè)置編碼格式
      mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
      mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
      mediaRecorder.setVideoFrameRate(3);
      //獲取根路徑
      String sdPath= Environment.getExternalStorageDirectory().getAbsolutePath();
      //設(shè)置保存的路徑
      mediaRecorder.setOutputFile(sdPath+"/taoge"+System.currentTimeMillis()+".mp4");
      //將畫面展示到SurfaceView
      mediaRecorder.setPreviewDisplay(sv_mediarecorder_surface.getHolder().getSurface());
      //準(zhǔn)備
      try {
        mediaRecorder.prepare();
        mediaRecorder.start();

      } catch (IOException e) {
        e.printStackTrace();
      }
      button.setText("結(jié)束");
    }else{

      // 為其它應(yīng)用釋放攝像頭
      mediaRecorder.release();
      mediaRecorder = null;
      //關(guān)閉
      button.setText("開始");
    }
    isStartAndStop=!isStartAndStop;
  }


}