我正在将使用 记录的 mp4 文件附加AVCaptureMovieFileOutput
到通知中UNNotificationServiceExtension
显然,视频帧是颠倒的,并且在元数据中指定了方向
如果我在通知中打开视频,它可以正确播放,但预览是颠倒的
我试过像那样指定剪裁矩形
do {
let upsideDown = CGRect(origin: CGPoint(x: 0, y: 1), size: CGSize(width: 1, height: -1))
try bestAttemptContent.attachments = [UNNotificationAttachment(
identifier: UUID().uuidString,
url: localurl!,
options: [
UNNotificationAttachmentOptionsTypeHintKey: kUTTypeMPEG4,
UNNotificationAttachmentOptionsThumbnailClippingRectKey: upsideDown.dictionaryRepresentation,
UNNotificationAttachmentOptionsThumbnailTimeKey: NSNumber(5.0)
]
)]
} catch {
print(error)
}
但是这段代码根本不显示预览(但是视频仍然可以正常工作)