iOS 获取本地视频的缩略图

iOS 获取本地视频的缩略图

(2012-10-10 20:06:27)

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+(UIImage *)getImage:(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;

}

需要添加AVFoundation和CoreMedia.framework

另外一种那个方法

MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc]
                                       initWithContentURL:videoURL];
moviePlayer.shouldAutoplay = NO; 

UIImage *thumbnail = [moviePlayer thumbnailImageAtTime:time
                     timeOption:MPMovieTimeOptionNearestKeyFrame];

//这个也一样

+(UIImage *)fFirstVideoFrame:(NSString *)path

{

    MPMoviePlayerController *mp = [[MPMoviePlayerController alloc]

                                   initWithContentURL:[NSURL fileURLWithPath:path]];

    UIImage *img = [mp thumbnailImageAtTime:0.0

                                 timeOption:MPMovieTimeOptionNearestKeyFrame];

    [mp stop];

    [mp release];

    return img;

}