我正在尝试录制视频，但是当我开始使用媒体录制器进行录制时，它会被水平拉伸。我试图应用大量的解决方案但是我的代码还没有用。这是我迄今为止试图解决此问题的方法。任何人都可以建议任何解决方案。谢谢
public class MyCameraSurfaceView extends SurfaceView implements
SurfaceHolder.Callback {
private SurfaceHolder mHolder;
private Camera mCamera;
public MyCameraSurfaceView(Context context, Camera camera) {
super(context);
mCamera = camera;
// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
mHolder = getHolder();
mHolder.addCallback(this);
// deprecated setting, but required on Android versions prior to 3.0
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format,
int width, int height) {
// If your preview can change or rotate, take care of those events
// here.
// Make sure to stop the preview before resizing or reformatting it.
System.out.println("inside surfaceChanged");
if (mHolder.getSurface() == null) {
return;
}
try {
mCamera.stopPreview();
} catch (Exception e) {
e.printStackTrace();
}
try {
mCamera.setDisplayOrientation(90);
mCamera.setPreviewDisplay(mHolder);
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
mCamera.setParameters(parameters);
////////////////////////////////////////////////////////////
/*if (mCamera != null) {
mSupportedPreviewSizes = mCamera.getParameters().getSupportedPreviewSizes();
Camera.Parameters parameters = mCamera.getParameters();
parameters.setPreviewSize(mPreviewSize.width, mPreviewSize.height);
mCamera.setParameters(parameters);
}*/
mCamera.startPreview();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, now tell the camera where to draw
// the preview.
System.out.println("inside surfaceCreated");
try {
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
}
public void setCamera(Camera camera) {
// method to set a camera instance
mCamera = camera;
}
public void refreshCamera(Camera camera) {
if (mHolder.getSurface() == null) {
// preview surface does not exist
return;
}
// stop preview before making changes
try {
mCamera.stopPreview();
} catch (Exception e) {
// ignore: tried to stop a non-existent preview
}
// set preview size and make any resize, rotate or
// reformatting changes here
// start preview with new settings
setCamera(camera);
try {
mCamera.setDisplayOrientation(90);
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
} catch (Exception e) {
Log.d(VIEW_LOG_TAG,
"Error starting camera preview: " + e.getMessage());
}
}
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
System.out.println("inside onMeasure");
final int width = resolveSize(getSuggestedMinimumWidth(), widthMeasureSpec);
final int height = resolveSize(getSuggestedMinimumHeight(), heightMeasureSpec);
setMeasuredDimension(width, height);
if (mSupportedPreviewSizes != null) {
mPreviewSize = getOptimalPreviewSize(mSupportedPreviewSizes, width, height);
}
}
}
private Camera.Size getOptimalPreviewSize(List<Camera.Size> sizes, int w, int h) {
final double ASPECT_TOLERANCE = 0.1;
double targetRatio = (double) h / w;
if (sizes == null) return null;
Camera.Size optimalSize = null;
double minDiff = Double.MAX_VALUE;
int targetHeight = h;
for (Camera.Size size : sizes) {
double ratio = (double) size.width / size.height;
if (Math.abs(ratio - targetRatio) > ASPECT_TOLERANCE) continue;
if (Math.abs(size.height - targetHeight) < minDiff) {
optimalSize = size;
minDiff = Math.abs(size.height - targetHeight);
}
}
if (optimalSize == null) {
minDiff = Double.MAX_VALUE;
for (Camera.Size size : sizes) {
if (Math.abs(size.height - targetHeight) < minDiff) {
optimalSize = size;
minDiff = Math.abs(size.height - targetHeight);
}
}
}
return optimalSize;
}
private boolean prepareMediaRecorder() {
try {
myCamera = getCameraInstance();
setCameraDisplayOrientation(VideoRecordingActivity.this, cameraId, myCamera);
myCamera.unlock();
mediaRecorder = new MediaRecorder();
mediaRecorder.setCamera(myCamera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
if (cameraId == 1) {
mediaRecorder.setProfile(CamcorderProfile
.get(CamcorderProfile.QUALITY_LOW));
mediaRecorder.setOrientationHint(270);
} else if (cameraId == 0) {
mediaRecorder.setProfile(CamcorderProfile
.get(CamcorderProfile.QUALITY_HIGH));
mediaRecorder.setOrientationHint(orientation);
}
prRecordedFile = new File(Environment.getExternalStorageDirectory()
+ "/VideoApp/Videos/"
+ String.valueOf(System.currentTimeMillis()) + ".mp4");
mediaRecorder.setOutputFile(prRecordedFile.getPath());
// mediaRecorder.setVideoSize(320, 240);
mediaRecorder.setVideoFrameRate(15); // might be auto-determined
mediaRecorder.setMaxDuration(900000); // Set max duration 900
// sec=15min.
mediaRecorder.setMaxFileSize(500000000); // Set max file size
mediaRecorder.setPreviewDisplay(myCameraSurfaceView.getHolder()
.getSurface());
mediaRecorder.prepare();
} catch (IllegalStateException e) {
releaseMediaRecorder();
return false;
} catch (Exception e) {
releaseMediaRecorder();
return false;
}
return true;
}
enter code here
这是解决我的问题，你可以试试这个：
无论您在surfaceChanged（）方法中设置预览大小，设置为同样在MediaRecorder类中。
在准备MediaRecorder时添加此行
mMediaRecorder.setVideoSize(mPreviewSize.width, mPreviewSize.height);