我一直在尝试按照官方示例使用MediaRecorder工作，尽管我能够创建一个文件，但它被顺时针旋转了90度...
现在我正在尝试在纵向模式下进行操作，我已经将预览表面旋转了90度并锁定为纵向模式...
我不知道如何修复这个问题并获得朝向纵向的视频，我已经尝试了与此主题相关的众多解决方案，但都无济于事...
代码：
public class CameraRecorder {
private Camera cam;
private MediaRecorder mMediaRecorder;
private CameraPreview mPreview;
private static Context mContext;
public CameraRecorder(CameraPreview preview, Context context){
mPreview = preview;
cam = mPreview.getCamera();
//cam.getParameters().setRotation(0);
mContext = context;
}
public boolean prep(){
mMediaRecorder = new MediaRecorder();
//mMediaRecorder.setOrientationHint(90);
// Step 1: Unlock and set camera to MediaRecorder
cam.unlock();
mMediaRecorder.setCamera(cam);
// Step 2: Set sources
//mMediaRecorder.setAudioSource(mContext.openFileInput());
mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
// Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
//mMediaRecorder.setVideoSize(mPreview.getMeasuredWidth(), mPreview.getMeasuredHeight());
mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
//mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_LOW));
// Step 4: Set output file
mMediaRecorder.setOutputFile(getOutputMediaFile().toString());
// Step 5: Set the preview output
mMediaRecorder.setPreviewDisplay(mPreview.getHolder().getSurface());
// Step 6: Prepare configured MediaRecorder
try {
mMediaRecorder.prepare();
} catch (IllegalStateException e) {
Log.d("Exception", "IllegalStateException preparing MediaRecorder: " + e.getMessage());
releaseMediaRecorder();
return false;
} catch (IOException e) {
Log.d("Exception", "IOException preparing MediaRecorder: " + e.getMessage());
releaseMediaRecorder();
return false;
} catch (Exception e) {
Log.d("Exception", "Exception preparing MediaRecorder: " + e.getMessage());
return false;
}
return true;
}
public static File getOutputMediaFile(){
File mediaFile;
mediaFile = new File(mContext.getCacheDir() + File.separator + "vid.mp4");
return mediaFile;
}
public void releaseMediaRecorder(){
if (mMediaRecorder != null) {
mMediaRecorder.reset(); // clear recorder configuration
mMediaRecorder.release(); // release the recorder object
mMediaRecorder = null;
cam.lock(); // lock camera for later use
}
}
public void startRecording(){
mMediaRecorder.start();
}
public void stopRecording(){
try {
mMediaRecorder.stop(); // stop the recording
releaseMediaRecorder(); // release the MediaRecorder object
cam.lock();
} catch (Exception e) {
Log.d("Exception","Exiting with exception: " + e.getMessage());
}
}
}
我尝试了各种不同的注释方法，但没有结果（设置特定的视频大小会导致“尝试删除损坏的文件”错误，所以我将其忽略了）......顺便说一句，我故意忽略了音频源，因为我只需要视频（稍后需要拼接音频，而且我也不知道从哪开始）。
非常感谢任何提示、想法或指针！