AVAudioSession *audioSession = [AVAudioSession sharedInstance];
NSError *setCategoryError = nil;
[audioSession setActive:YES error:&setCategoryError];
[audioSession setCategory:AVAudioSessionCategoryPlayback
                           error:&setCategoryError];

_mpviewController = [[MPMoviePlayerViewController alloc] initWithContentURL:[NSURL fileURLWithPath:moviepath]];

_mpviewController.moviePlayer.movieSourceType   = MPMovieSourceTypeFile;
_mpviewController.moviePlayer.controlStyle      = MPMovieControlStyleNone;
[_mpviewController.moviePlayer setScalingMode:MPMovieScalingModeAspectFill];

_mpviewController.moviePlayer.shouldAutoplay = YES;

[_mpviewController.moviePlayer prepareToPlay];

_mpviewController.view.frame = CGRectMake(0, 0, _screenWidth, _screenHeight);

[self addSubview:_mpviewController.view];

[_session beginConfiguration];

[_session setSessionPreset: AVCaptureSessionPreset640x480];

AVCaptureDevice * videoDevice = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeVideo];
BOOL lock = [videoDevice lockForConfiguration:&error];
if(lock) videoDevice.focusMode = AVCaptureFocusModeContinuousAutoFocus;
[videoDevice unlockForConfiguration];

if(videoDevice == nil){
    assert(0);
}

AVCaptureDeviceInput *input = [AVCaptureDeviceInput deviceInputWithDevice:videoDevice error:&error];
if(error){
    assert(0);
}

[_session addInput:input];

AVCaptureDevice *audioDevice        = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];
AVCaptureDeviceInput * audioInput   = [AVCaptureDeviceInput deviceInputWithDevice:audioDevice error:nil];
if(audioInput != nil) {
    [_session addInput:audioInput];
}

[_session commitConfiguration];