根据url获取视频的缩略图和数据

获取缩略图方法一：

导入

#import <AVFoundation/AVFoundation.h>

#import <MediaPlayer/MediaPlayer.h>

                MPMoviePlayerController *player = [[MPMoviePlayerControlleralloc]initWithContentURL:url];

                UIImage  *thumbnail = [playerthumbnailImageAtTime:1.0timeOption:MPMovieTimeOptionNearestKeyFrame];

                [playerstop];

获取缩略图方法二：

#import <AVFoundation/AVFoundation.h>

#import <AssetsLibrary/ALAssetsLibrary.h>

+ (UIImage *)getVideoThumbnailImage:(NSURL *)videoURL {

   AVURLAsset *asset = [[AVURLAssetalloc]initWithURL:videoURLoptions:nil];

    AVAssetImageGenerator *gen = [[AVAssetImageGeneratoralloc]initWithAsset:asset];

    gen.appliesPreferredTrackTransform =YES;

    CMTime time =CMTimeMakeWithSeconds(0.0,600);

   NSError *error =nil;

   CMTime actualTime;

   CGImageRef image = [gencopyCGImageAtTime:time actualTime:&actualTimeerror:&error];

   UIImage *thumb = [[UIImagealloc]initWithCGImage:image];

    CGImageRelease(image);

   return thumb;

}

获取数据流：

 NSData *data = [NSDatadataWithContentsOfURL:videoURL];