我的程序可以打开E9 ov摄像头。但是无法实现录制视频.
我的程序可以打开E9 ov摄像头。但是无法实现录制视频，录制得到的文件大小为0B，下面是源代码，还请大家伙帮忙看一下是哪里有问题，万分感谢！
package com.paad.videocamera;
import java.io.File;
import java.io.IOException;
import android.app.Activity;
import android.graphics.PixelFormat;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.media.CamcorderProfile;
import android.media.MediaRecorder;
import android.media.MediaScannerConnection;
import android.media.MediaScannerConnection.MediaScannerConnectionClient;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class VideoCameraActivity extends Activity implements SurfaceHolder.Callback {
private static final String TAG = "CameraActivity";
private Camera mcamera;
private SurfaceHolder mholder;
private MediaRecorder mmediaRecorder;
private void prepareVideoCamera() throws IllegalStateException, IOException {
// Create a new Media Recorder.
mmediaRecorder = new MediaRecorder();
try {
mcamera.setPreviewDisplay(mholder);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
/**
* Listing 15-30: Preparing to record audio and video using the Media Recorder
*/
// Unlock the Camera to allow the Media Recorder to own it.
mcamera.unlock();
// Assign the Camera to the Media Recorder.
mmediaRecorder.setCamera(mcamera);
// Configure the input sources.
mmediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mmediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
//set output format
mmediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
//set encoder
mmediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
mmediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mmediaRecorder.setPreviewDisplay( mholder.getSurface());
FilesoundFile = new File(Environment.getExternalStorageDirectory()
.getCanonicalPath() + File.separator + "myvideorecording.mp4");
// Specify the output file
mmediaRecorder.setOutputFile( soundFile.getAbsolutePath() );
/*
CamcorderProfile Profile = CamcorderProfile.get( 0, CamcorderProfile.QUALITY_LOW );
Profile.videoFrameHeight = 720;
Profile.videoFrameWidth = 1280;
mmediaRecorder.setProfile(Profile);
FilesoundFile = new File(Environment.getExternalStorageDirectory()
.getCanonicalPath() + File.separator + "myvideorecording.mp4");
// Specify the output file
mmediaRecorder.setOutputFile( soundFile.getAbsolutePath() );
*/
// Prepare to record
mmediaRecorder.prepare();
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
SurfaceView surface = (SurfaceView)findViewById(R.id.surfaceView);
SurfaceHolder holder = surface.getHolder();
holder.addCallback(this);
Button record = (Button)findViewById(R.id.buttonRecord);
Button stabilize = (Button)findViewById(R.id.buttonStabilize);
Button scanner = (Button)findViewById(R.id.buttonScanner);
record.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
startRecording();
}
});
stabilize.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
enableVideoStabilization();
}
});
scanner.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
stopRecording();
}
});
}
public void surfaceCreated(SurfaceHolder holder) {
this.mholder = holder;
mcamera = Camera.open(0);
Camera.Parameters parameters = mcamera.getParameters();
parameters.setRecordingHint(true);
mcamera.setParameters(parameters);
try {
mcamera.setPreviewDisplay(holder);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
prepareVideoCamera();
} catch (IllegalStateException e) {
Log.e(TAG, "Illegal State Exception", e);
} catch (IOException e) {
Log.e(TAG, "I/O Exception", e);
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
this.mholder = null;
}
public void surfaceChanged(SurfaceHolder holder, int format,
int width, int height) {
//开始预览
mcamera.startPreview();
}
@Override
protected void onResume() {
super.onResume();
}
@Override
protected void onPause() {
super.onPause();
// Reset and release the media recorder.
mmediaRecorder.reset();
mmediaRecorder.release();
mcamera.lock();
// Release the camera.
mcamera.release();
}
private void stopRecording() {
/**
* Listing 15-32: Stopping a video recording
*/
mmediaRecorder.stop();
// Reset and release the media recorder.
mmediaRecorder.reset();
mmediaRecorder.release();
mcamera.lock();
try {
prepareVideoCamera();
} catch (IllegalStateException e) {
Log.e(TAG, "Illegal State Exception", e);
} catch (IOException e) {
Log.e(TAG, "I/O Exception", e);
}
}
private void enableVideoStabilization() {
/**
* Listing 15-33: Image stabilization
*/
Camera.Parameters parameters = mcamera.getParameters();
if (parameters.isVideoStabilizationSupported())
parameters.setVideoStabilization(true);
mcamera.setParameters(parameters);
}
/**
* Listing 15-34: Adding files to the Media Store using the Media Scanner
*/
private void mediaScan(final String filePath) {
MediaScannerConnectionClient mediaScannerClient = new
MediaScannerConnectionClient() {
private MediaScannerConnection msc = null;
{
msc = new MediaScannerConnection(
VideoCameraActivity.this, this);
msc.connect();
}
public void onMediaScannerConnected() {
// Optionally specify a MIME Type, or
// have the Media Scanner imply one based
// on the filename.
String mimeType = null;
msc.scanFile(filePath, mimeType);
}
public void onScanCompleted(String path, Uri uri) {
msc.disconnect();
Log.d(TAG, "File Added at: " + uri.toString());
}
};
}
private void startRecording() {
try {
mmediaRecorder.start();
} catch (IllegalStateException e) {
mmediaRecorder.release();
mcamera.lock();
Log.d(TAG, "Illegal State Exception", e);
}
}
} 系统自带的camera是可以打开以及录像的，但是程序太大，文件就有近100个。
有人在吗？帮忙解答一下子呗 参数重新设置之后 能录像了
mediarecorder = new MediaRecorder();// 创建mediarecorder对象
mCamera = getCameraInstance();
// 解锁camera
mCamera.unlock();
mediarecorder.setCamera(mCamera);
// 设置录制视频源为Camera(相机)
mediarecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
// 设置录制完成后视频的封装格式THREE_GPP为3gp.MPEG_4为mp4
mediarecorder.setOutputFormat(MediaRecorder.OutputFormat.DEFAULT);
// 设置录制的视频编码h263 h264
mediarecorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
mediarecorder.setPreviewDisplay(surfaceHolder.getSurface());
// 设置视频文件输出的路径
mediarecorder.setOutputFile("/sdcard/love.mp4");
try {
// 准备录制
mediarecorder.prepare();
// 开始录制
mediarecorder.start();
} catch (IllegalStateException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
但是图像有问题啊还有人帮一下子啊
附件是录制的视频
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