无法加载 public.mpeg-4

如何解决无法加载 public.mpeg-4

上次检查时该应用运行良好，但我猜 iOS 14 存在一些问题，

我在应用程序中有一个功能，我在视频上添加了一些水印，然后用户可以共享该视频，当我尝试在 Skype 上共享视频时，就会出现此问题。休息视频在应用中播放正常

问题发生在发送视频 10% 后，然后出现此错误。请检查两个屏幕截图是否相同

我担心的问题是我的代码还是Skype的接收代码？

视频分享代码是

    func showActivityController(_ image: UIImage?,video:URL?,text: String?,url: String?,activities: [UIActivity]? = nil,isShare: Bool = false) {

    var array = [AnyObject]()

    if image != nil {
        array.append(image!)
    }
    if video != nil {
        array.append(video!  as AnyObject)
    }
    
    if text != nil {
        array.append(text! as AnyObject)
    }
    if url != nil {
        array.append(URL(string: url!)! as AnyObject)
    }
    assert(array.count != 0,"Please specify at least element to share among image,text or url")

    let activityController = UIActivityViewController(activityItems: array,applicationActivities: activities)
    
    present(activityController,animated: true,completion: nil)
    
    if isShare {
        activityController.completionWithItemsHandler = {(activityType: UIActivity.ActivityType?,completed: Bool,returnedItems: [Any]?,error: Error?) in
            if completed {
                // User completed activity
                
                if let rootController = kAppDelegate.window?.rootViewController {
                    rootController.dismiss(animated: true,completion: nil)
                }
                
            } else {
                // User canceled
                
            }
            
        }
    }
    
}

}