屏幕截图不显示视频

Question

我需要点击一个按钮获取视频的屏幕截图。下面是用于此的代码，但图片仅显示视频的底部部分即播放和进度随着时间的推移..我使用MPMoviePlayerController播放视频。

CGRect rect = [_moviePlayer.view bounds];
UIGraphicsBeginImageContext(rect.size);
CGContextRef context = UIGraphicsGetCurrentContext();
[_moviePlayer.view.layer renderInContext:context];
UIImage *image = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();

UIImageView   *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 100, 100, 100)];
[imgView setImage:image];
imgView.layer.borderWidth = 2.0;
[_firstimage addSubview:imgView];

NSURL * url = [NSURL URLWithString：@“http://devimages.apple.com/iphone/samples/bipbop/bipbopall.m3u8”];

这就是它如何显示......我如何获得视频图像？任何人都可以帮助我..

Answer 1

如何使用[MPMoviePlayerController requestThumbnailImagesAtTimes: timeOption:]？

Answer 2

CGImageRef originalImage = UIGetScreenImage();
CGImageRef videoImage = CGImageCreateWithImageInRect(originalImage,   CGRectMake(0, 0, 680, 300));
UIImage *snapShotImage = [UIImage imageWithCGImage:videoImage];
UIImageWriteToSavedPhotosAlbum(snapShotImage, nil, nil, nil);
CGImageRelease(originalImage);
CGImageRelease(videoImage);
UIImageView   *imgView = [[UIImageView alloc] initWithFrame:CGRectMake(0, 100, 250, 200)];
[imgView setImage:snapShotImage];
imgView.layer.borderWidth = 2.0;
[_firstimage addSubview:imgView];

此代码有效...感谢您的帮助...