1

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

{

MPMoviePlayerController*mp = [[MPMoviePlayerControlleralloc]

initWithContentURL:[NSURLfileURLWithPath:path]];

UIImage*img = [mpthumbnailImageAtTime:0.0

timeOption:MPMovieTimeOptionNearestKeyFrame];

[mpstop];

returnimg;

}

2

+(UIImage*)thumbnailImageRequest:(CGFloat)timeBySecond putStr:(NSString*)_urlStr{

//创建URL

NSURL*url=[NSURLfileURLWithPath:_urlStr];

//根据url创建AVURLAsset

AVURLAsset*urlAsset=[AVURLAssetassetWithURL:url];

//根据AVURLAsset创建AVAssetImageGenerator

AVAssetImageGenerator*imageGenerator=[AVAssetImageGeneratorassetImageGeneratorWithAsset:urlAsset];

/*截图

* requestTime:缩略图创建时间

* actualTime:缩略图实际生成的时间

*/

NSError*error=nil;

CMTimetime=CMTimeMakeWithSeconds(timeBySecond,10);//CMTime是表示电影时间信息的结构体，第一个参数表示是视频第几秒，第二个参数表示每秒帧数.(如果要活的某一秒的第几帧可以使用CMTimeMake方法)

CMTimeactualTime;

CGImageRefcgImage= [imageGeneratorcopyCGImageAtTime:timeactualTime:&actualTimeerror:&error];

if(error){

NSLog(@"截取视频缩略图时发生错误，错误信息：%@",error.localizedDescription);

//return;

}

CMTimeShow(actualTime);

UIImage*image=[UIImageimageWithCGImage:cgImage];//转化为UIImage

returnimage;

}