屏幕截圖不會顯示視頻中的圖像

我需要點擊一個按鈕才能獲得視頻的屏幕截圖。下面是用於該視頻的代碼，但該圖像僅顯示視頻的底部，即播放和隨着時間的推移進展..我用MPMoviePlayerController來播放視頻。屏幕截圖不會顯示視頻中的圖像

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」];

enter image description here

這是怎麼了shows..How可我得到的視頻圖像？任何人都可以幫助我..

來源

2015-05-11 Prarthana

檢查這兩個答案http://stackoverflow.com/questions/13855340/is-there-any-way-to-take -a-screenshot-when-mpmovieplayercontroller-is-playing或http://stackoverflow.com/questions/11258765/mpmovieplayercontroller-taking-screen-shot-but-showing-only-black-screen – Rog

@Rog第二個鏈接幫助。。謝謝 – Prarthana

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];

此代碼的工作...感謝您的幫助...

來源

2015-05-11 07:18:55 Prarthana

如何使用[MPMoviePlayerController requestThumbnailImagesAtTimes: timeOption:]？

來源

2015-05-11 06:33:42 trojanfoe

屏幕截圖不會顯示視頻中的圖像

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