我正在研究社交移动应用.它可以选择录制个人资料视频.我的刻录机的问题是它反映了实际的视频.我知道这是默认行为,但希望它像sanpchat一样工作.
预习
录制和播放后
这是我的代码
// return camera instance when activity open first time
private Camera getCameraInstance() {
// TODO Auto-generated method stub
releaseCamera();
releaseMediaRecorder();
Camera c = null;
try {
cameraId = findFrontFacingCamera();
if (cameraId < 0) {
cameraId = findBackFacingCamera();
}
c = Camera.open(cameraId);
// setCameraDisplayOrientation(this,cameraId,c);
//setCameraDisplayOrientation(this,c);
c.setDisplayOrientation(90);
} catch (Exception e) {
// Camera is not available (in use or does not exist)
}
return c; // returns null if camera is unavailable
}
// return __cameraPreview Id 1 to open front camera
private int findFrontFacingCamera() {
int cameraId = -1;
// Search for the front facing camera
int numberOfCameras = Camera.getNumberOfCameras();
for (int i = 0; i < numberOfCameras; i++) {
Camera.CameraInfo info = new Camera.CameraInfo();
Camera.getCameraInfo(i,info);
if (info.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
cameraId = i;
setOrientationHint = 270 ;
cameraFront = true;
break;
}
}
return cameraId;
}
// prepare and start recording
private boolean prepareMediaRecorder() {
mediaRecorder = new MediaRecorder();
try {
myCamera.unlock();
} catch (Exception e) {
e.printStackTrace();
}
mediaRecorder.setCamera(myCamera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
//mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
if (cameraPreview.getVideoSize() != null) {
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mediaRecorder.setOutputFile(saveUrl);
mediaRecorder.setVideoEncodingBitRate(10000000);
mediaRecorder.setVideoFrameRate(30);
mediaRecorder.setVideoSize(cameraPreview.getVideoSize().width,cameraPreview.getVideoSize().height);
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
} else {
CamcorderProfile cp = CamcorderProfile.get(cameraId,CamcorderProfile.QUALITY_HIGH);
mediaRecorder.setProfile(cp);
}
Log.e(TAG,"Video profile CamcorderProfile.QUALITY_HIGH: " + "cp.quality:" + cp.quality
+ ",cp.videoFrameWidth:" + cp.videoFrameWidth
+ ",cp.videoFrameHeight:" + cp.videoFrameHeight);
mediaRecorder.setMaxDuration(MAX_VIDEO_LENGTH);
mediaRecorder.setOrientationHint(setOrientationHint);
try {
mediaRecorder.prepare();
} catch (IllegalStateException | IOException e) {
e.printStackTrace();
releaseMediaRecorder();
return false;
}
mediaRecorder.start();
return true;
}
我希望它应该与播放中的预览相同. Sanpchat已经做了同样的事情,提前感谢.
解决方法
您已将前置摄像头的方向设置为270,
setOrientationHint = 270 ;
相反,我建议将方向设置为180度,如下所示,
setOrientationHint = (info.orientation - 180 + 360) % 360;
这也将改变整个视频文件.
