android video real-time monitoring and video files need to be saved to a local problem

            


Why the video is saved to a local file is empty, is not it conflicts with the Camera or something, do a few days, seeking help, how to solve it?

 
public class SocketCamera extends SurfaceView implements 
Camera.PreviewCallback, SurfaceHolder.Callback {

public SocketCamera (Context arg0) {
super (arg0); 
} 

private SurfaceHolder mSurfaceHolder = null; 
private Camera mCamera = null; 
private File myRecAudioFile; 
private File dir; 
private MediaRecorder recorder; 
public String sdcardDir = "/ mnt / extsd / video /"; 
/ ** Server name * / 
private String pUsername = "XZY"; 
/ ** Video quality * / 
private int VideoQuality = 85; 
/ ** Send video width ratio * / 
private float VideoWidthRatio = 100; 
/ ** Send video height ratio * / 
private float VideoHeightRatio = 100; 
/ ** Send video resolution width * / 
private int VideoWidth = 0; 
/ ** Send video resolution height * / 
private int VideoHeight = 0; 
/ ** Video format index * / 
private int VideoFormatIndex = 0; 

public void init (int Width, int Height) {
VideoHeight = Height; 
VideoWidth = Width; 
mSurfaceHolder = getHolder (); 
mSurfaceHolder.addCallback (this); 
mSurfaceHolder.setType (SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS); 
VideoWidthRatio = VideoWidthRatio / 100f; 
VideoHeightRatio = VideoHeightRatio / 100f; 
new MySendCommondThread ("PHONECONNECT |" + pUsername + "|") start ();. 
if (recorder == null) {
recorder = new MediaRecorder (); 
} 
InitCamera (); 
recorder (); 
} 

private void InitCamera () {
try {
mCamera = Camera.open (); 
} Catch (Exception e) {
e.printStackTrace (); 
} 
} 

public void recorder () {
dir = new File (sdcardDir); 
if (! dir.exists ()) {
dir.mkdir (); 
} 
try {
myRecAudioFile = File 
.createTempFile ("SP" + new SimpleDateFormat ("yyyyMMdd_hhmmss") format (new Date (System.currentTimeMillis ())), "3gp.", dir.); // create a temporary file 
// Recorder.setAudioSource (MediaRecorder.AudioSource.MIC); // 
// Recording source microphone 
// Recorder.setMaxDuration (10000); // maximum period 
recorder.setCamera (mCamera); 
recorder.setVideoSource (MediaRecorder.VideoSource.CAMERA); // to capture video from a camera 
recorder.setOutputFormat (MediaRecorder.OutputFormat.THREE_GPP); 
recorder.setVideoEncoder (MediaRecorder.VideoEncoder.H264); // Set video encoding 
recorder.setVideoSize (320, 240); 
recorder.setVideoFrameRate (20); // 20 frames per second 
// Recorder.setPreviewDisplay (mSurfaceHolder.getSurface ()); // Preview 
recorder.setOutputFile (myRecAudioFile.getAbsolutePath ()); // save path 
recorder.prepare (); 
recorder.start (); 
} Catch (IOException e) {
e.printStackTrace (); 
} 
} 

Override 
public void surfaceChanged (SurfaceHolder holder, int format, int width, 
int height) {
if (mCamera == null) {
return; 
} 
mCamera.stopPreview (); 
mCamera.setPreviewCallback (this); 
Camera.Parameters parameters = mCamera.getParameters (); 
Size size = parameters.getPreviewSize (); 
VideoWidth = size.width; 
VideoHeight = size.height; 
VideoFormatIndex = parameters.getPreviewFormat (); 
mCamera.startPreview (); 

} 

Override 
public void surfaceCreated (SurfaceHolder holder) {
// TODO Auto-generated method stub 
try {
if (mCamera! = null) {
mCamera.setPreviewDisplay (mSurfaceHolder); 
mCamera.startPreview (); 
} 
} Catch (IOException e) {
e.printStackTrace (); 
} 
} 

Override 
public void surfaceDestroyed (SurfaceHolder holder) {
// TODO Auto-generated method stub 
if (null! = mCamera) {
mCamera.setPreviewCallback (null); 
mCamera.stopPreview (); 
mCamera.release (); 
mCamera = null; 
} 
if (null! = recorder) {
recorder.stop (); 
recorder.reset (); 
recorder.release (); 
recorder = null; 
} 
} 

Override 
public void onPreviewFrame (byte [] data, Camera camera) {
// TODO Auto-generated method stub 
try {
if (data! = null) {
YuvImage image = new YuvImage (data, VideoFormatIndex, 
VideoWidth, VideoHeight, null); 
if (image! = null) {
ByteArrayOutputStream outstream = new ByteArrayOutputStream (); 
image.compressToJpeg (new Rect (0, 0, 
(Int) (VideoWidthRatio * VideoWidth), 
(Int) (VideoHeightRatio * VideoHeight)), 
VideoQuality, outstream); 
outstream.flush (); 

Thread th = new MySendFileThread (outstream, pUsername, 
Constant.SRVIP, 8511); 
th.start (); 
} 
} 
} Catch (IOException e) {
e.printStackTrace (); 
} 
} 
} 

Reply:
File has been 0kb or do not understand how going on?
Reply:
Help ah help ~~~
Reply:
Will the landlord your problem resolved? It is how to solve it?
Reply: