iOS獲取本地視頻和網絡URL視頻的縮略圖方法

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首先大家先添加AVFoundation和CoreMedia.framework兩個框架

• 第一種本地視頻獲取縮略圖

NSString *path = @"www.51ios.net/本地路徑" MPMoviePlayerController *51iosMPMovie = [[MPMoviePlayerController alloc] initWithContentURL:[NSURL fileURLWithPath:path]]; UIImage *img = [51iosMPMovie thumbnailImageAtTime:0.0 timeOption:MPMovieTimeOptionNearestKeyFrame]; 此處的img就是時間在0.0的縮略圖

• 第二種獲取網絡視頻的縮略圖

NSString *videoURL = @"http://www.51ios.net/archives/784" MPMoviePlayerController *51iosMPMovie = [[MPMoviePlayerController alloc]initWithContentURL:videoURL]; 51iosMPMovie.shouldAutoplay = NO; UIImage *thumbnail = [51iosMPMovie thumbnailImageAtTime:time timeOption:MPMovieTimeOptionNearestKeyFrame]; 此處的thumbnail就是網絡視頻的縮略圖

• 第三站方法用AVFoundation實現

+(UIImage *)getThumbnailImage:(NSString *)videoURL { AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:[NSURL fileURLWithPath:videoURL] options:nil]; AVAssetImageGenerator *gen = [[AVAssetImageGenerator alloc] initWithAsset:asset]; gen.appliesPreferredTrackTransform = YES; CMTime time = CMTimeMakeWithSeconds(0.0, 600); NSError *error = nil; CMTime actualTime; CGImageRef image = [gen copyCGImageAtTime:time actualTime:&actualTime error:&error]; UIImage *thumb = [[UIImage alloc] initWithCGImage:image]; CGImageRelease(image); return thumb; }