MPMoviePlayerController 截屏但只显示黑屏

Posted 2023-03-07

【中文标题】MPMoviePlayerController 截屏但只显示黑屏

【英文标题】：MPMoviePlayerController Taking screen shot but showing only black screen

【发布时间】：2012-06-29 08:52:10

【问题描述】：

我在播放 MPMoviePlayerController 时截屏。完美保存屏幕截图，但图像只有黑色。我使用下面的代码。

UIGraphicsBeginImageContext(self.moviePlayerController.view.frame.size);
[self.moviePlayerController.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
UIImageWriteToSavedPhotosAlbum(viewImage, nil, nil, nil);

【参考方案1】：

最后我解决了这个问题...我正在使用此代码...完美运行...感谢所有人...

- (void)captureScreenShot

    CGImageRef originalImage = UIGetScreenImage();
    CGImageRef videoImage = CGImageCreateWithImageInRect(originalImage, CGRectMake(0, 66, 320, 230));            
    UIImage *snapShotImage = [UIImage imageWithCGImage:videoImage];
    UIImageWriteToSavedPhotosAlbum(snapShotImage, nil, nil, nil);
    CGImageRelease(originalImage);                
    CGImageRelease(videoImage);  

【参考方案2】：

你可以试试MPMoviePlayerController的thumbnailImageAtTime方法。

UIImage *aThumbnail = [player thumbnailImageAtTime:timeCode timeOption:MPMovieTimeOptionExact];
//timeCode is a time within the video length, for example: 5 seconds.

【讨论】：

谢谢...但是什么也没发生 UIGraphicsBeginImageContext(self.movi​​ePlayerController.view.frame.size); [self.movi​​ePlayerController.view.layer renderInContext:UIGraphicsGetCurrentContext()]; UIGraphicsEndImageContext(); UIImage *aThumbnail = [self.movi​​ePlayerController thumbnailImageAtTime:0 timeOption:MPMovieTimeOptionExact]; UIImageWriteToSavedPhotosAlbum(aThumbnail, nil, nil, nil);我用这条线。