ios - 无法设置不同的视频时长以在iOS中捕获和编辑视频

Question

我正在进行一个项目，在该项目中，我需要设置1分钟的视频录制时间，但是用户应该并编辑并选择30秒持续时间的视频。

以下是我用于启用30秒最大编辑时间的代码。

-(BOOL)startCameraControllerFromViewController: (UIViewController*) controller
                                   usingDelegate: (id <UIImagePickerControllerDelegate,
                                                   UINavigationControllerDelegate>) delegate
{

    if (([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera] == NO) || (delegate == nil) || (controller == nil))
    {
        return NO;
    }

    UIImagePickerController *cameraUI = [[UIImagePickerController alloc] init];
    cameraUI.sourceType = UIImagePickerControllerSourceTypeCamera;

    // Displays a control that allows the user to choose movie capture
    cameraUI.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];

    // Hides the controls for moving & scaling pictures, or for
    // trimming movies. To instead show the controls, use YES.
    cameraUI.allowsEditing = YES;
    cameraUI.videoMaximumDuration = 30;
    cameraUI.delegate = delegate;

    [controller presentModalViewController: cameraUI animated: YES];
    return YES;
}

任何帮助将不胜感激。

Answer 1

苹果提供了用于视频编辑的示例。您可以在WWDC 2010示例代码包中引用AVEditDemo示例...。