iOS 获取本地视频的缩略图

+(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;


}