AVPlayerLayer的模糊內容

Question

有沒有一種方法可以模糊在AVPlayerLayer中顯示的內容？
內容是流的資產（M3U8），所以沒有選項AVAssetReader等

Answer 1

嘗試使用下一個解決方案來獲得圖像：

CIImage *snaphotImage = nil; 
AVPlayerItem *item = ((AVPlayerLayer*)view.layer).player.currentItem; 
if (item.status == AVPlayerItemStatusReadyToPlay) 
{ 
    AVURLAsset *asset = (AVURLAsset *)item.asset; 
    AVAssetImageGenerator *imageGenerator = [[AVAssetImageGenerator alloc] initWithAsset:asset]; 
    CGImageRef thumb = [imageGenerator copyCGImageAtTime:((AVPlayerLayer*)view.layer).player.currentTime 
               actualTime:NULL 
                error:NULL]; 
    snapshotImage = [CIImage imageWithCGImage:thumb]; 
    CGImageRelease(thumb); 
} 

，然後應用模糊它：

CIFilter *filter = [CIFilter filterWithName:@"CIGaussianBlur" 
           keysAndValues:@"inputRadius", @9.0, 
              @"inputImage", snapshotImage, nil]; 
CIImage *resultImage = [filter outputImage]; 
UIImage *resultUIImage = [UIImage imageWithCIImage:resultImage];