This program helps how to capture Video with audio using an existing camera application.
There are two tools- Button, SurfaceView
MainActivity.java—-
public class MainActivity extends AppCompatActivity
{
private SurfaceHolder sh;
private SurfaceView sv;
public MediaRecorder mrec = new MediaRecorder();
private Camera camera;
private Button button;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
setContentView(R.layout.activity_main);
try {
button=(Button) findViewById(R.id.button);
sv = (SurfaceView) findViewById(R.id.surfaceView);
camera = Camera.open();
setTitle("Start");
sh = sv.getHolder();
sh.addCallback(new RecorderSurface(camera,this));
sh.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
catch (Exception ex)
{
System.out.println(ex);
setTitle(ex.getMessage());
}
}
public void TakeVideo(View view)
{
if(button.getText().equals("Start"))
{
try {
startRecording();
button.setText("Stop");
} catch (Exception e) {
String message = e.getMessage();
setTitle("Problem " + message);
mrec.release();
}
}
else if(button.getText().equals("Stop"))
{
mrec.stop();
mrec.release();
mrec = null;
button.setText ("Start");
}
}
protected void startRecording() throws IOException
{
if(camera==null)
camera = Camera.open();
String filename;
String path;
path= Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM).getAbsolutePath().toString();
Date date=new Date();
filename="/pappu"+date.toString().replace(" ", "_").replace(":", "_")+".mp4";
//create empty file it must use
File file=new File(path,filename);
mrec = new MediaRecorder();
camera.lock();
camera.unlock();
// mCamera.setDisplayOrientation(90); // use for set the orientation of the preview
mrec.setOrientationHint(90);
mrec.setCamera(camera);
mrec.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mrec.setAudioSource(MediaRecorder.AudioSource.MIC);
mrec.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mrec.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mrec.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
mrec.setPreviewDisplay(sh.getSurface());
mrec.setOutputFile(path+filename);
mrec.prepare();
mrec.start();
}
protected void stopRecording() {
if(mrec!=null)
{
mrec.stop();
mrec.release();
camera.release();
camera.lock();
}
}
private void releaseMediaRecorder() {
if (mrec != null) {
mrec.reset(); // clear recorder configuration
mrec.release(); // release the recorder object
}
}
private void releaseCamera() {
if (camera != null) {
camera.release(); // release the camera for other applications
camera = null;
}
}
}
We have to make a new class named “RecorderSurface”—-
public class RecorderSurface implements SurfaceHolder.Callback {
private Camera camera;
private Context context;
public RecorderSurface(Camera camera, Context context)
{
this.camera=camera;
this.context=context;
}
@Override
public void surfaceCreated(SurfaceHolder surfaceHolder) {
if (camera != null) {
Camera.Parameters params = camera.getParameters();
camera.setParameters(params);
Toast.makeText(context, "Surface Created", Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(context, "Camera is not available",
Toast.LENGTH_LONG).show();
}
}
@Override
public void surfaceChanged(SurfaceHolder surfaceHolder, int i, int i1, int i2) {
}
@Override
public void surfaceDestroyed(SurfaceHolder surfaceHolder) {
camera.stopPreview();
camera.release();
}
}
We have to give permission in manifests—
<uses-permission android:name="android.permission.CAMERA"/> <uses-permission android:name="android.permission.RECORD_AUDIO"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
activity_main.xml——-
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="com.example.pradeepkumar.videocamerademo.MainActivity">
<SurfaceView
android:id="@+id/surfaceView"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_below="@+id/button"
android:layout_centerInParent="true"
android:layout_weight="1"/>
<Button
android:background="#22FF00"
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:onClick="TakeVideo"
android:text="Start" />
</RelativeLayout>