“不支持这种电影格式” - iPad 上 UIImagePickerController 的奇怪问题（iOS v 4.3）答案

【问题标题】："This movie format is not supported" - Strange issue with UIImagePickerController on iPad (iOS v 4.3)“不支持这种电影格式” - iPad 上 UIImagePickerController 的奇怪问题（iOS v 4.3）
【发布时间】：2011-11-14 21:59:06
【问题描述】：

我的基本要求是使用 UIImagePickerController 捕获视频。视频录制应在录制 10 秒视频后自动停止。

我在 iPad 2（iOS 4.3 版）上遇到非常奇怪的错误 - 当视频在 iPad2 上达到其最大持续时间时，“不支持此电影格式”。

这是我的一段代码。该代码在 iPhone 上工作得非常好，但是当视频在 iPad2 上达到其最大持续时间时，会给出“不支持此电影格式”。

任何帮助将不胜感激。

(void) launchCamera : (BOOL) bAlbum         
    {   
    UIImagePickerController * pImgPicker = [[UIImagePickerController alloc] init];  
    pImgPicker.delegate = self;

    pImgPicker.mediaTypes =[UIImagePickerController availableMediaTypesForSourceType:pImgPicker.sourceType];
    if(m_bRecordVideo)
    {
        pImgPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        [pImgPicker setVideoQuality: UIImagePickerControllerQualityTypeMedium];
        [pImgPicker setCameraCaptureMode: UIImagePickerControllerCameraCaptureModeVideo];
        [pImgPicker setVideoMaximumDuration:10];
    }
    else
    {
        pImgPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        [pImgPicker setCameraCaptureMode: UIImagePickerControllerCameraCaptureModePhoto];
    }

    [self presentModalViewController:pImgPicker animated:YES];
    [pImgPicker release];
}

【问题讨论】：

标签： iphone objective-c ios ipad ios4

【解决方案1】：

我找到了解决上述问题的方法。

以下行解决了该问题。

pImgPicker.mediaTypes = [[[NSArray alloc] initWithObjects:(NSString*) kUTTypeMovie, nil] autorelease];

这是更新后的代码。

-(void) launchCamera : (BOOL) bAlbum
{
    UIImagePickerController * pImgPicker = [[UIImagePickerController alloc] init];
    pImgPicker.delegate = self;

    pImgPicker.mediaTypes =[UIImagePickerController availableMediaTypesForSourceType:pImgPicker.sourceType];
    if(m_bRecordVideo) 
    {
        pImgPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        pImgPicker.mediaTypes = [[[NSArray alloc] initWithObjects:(NSString*) kUTTypeMovie, nil] autorelease];

        [pImgPicker setVideoQuality: UIImagePickerControllerQualityTypeMedium];
        [pImgPicker setCameraCaptureMode: UIImagePickerControllerCameraCaptureModeVideo];
        [pImgPicker setVideoMaximumDuration:10];
    }
    else
    {
        pImgPicker.sourceType = UIImagePickerControllerSourceTypeCamera;
        [pImgPicker setCameraCaptureMode: UIImagePickerControllerCameraCaptureModePhoto];
    }

    [self presentModalViewController:pImgPicker animated:YES];
    [pImgPicker release];
}

谢谢， --Prem

【讨论】：