iOS获取视频中的指定帧的两种方法

方法一 ：AVFoundation

 1 #import <AVFoundation/AVFoundation.h>
 2 
 3 - (UIImage *)thumbnailImageForVideo:(NSURL *)videoURL atTime:(NSTimeInterval)time {
 4     AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoURL options:nil];
 5     NSParameterAssert(asset);
 6     AVAssetImageGenerator *assetImageGenerator =[[AVAssetImageGenerator alloc] initWithAsset:asset];
 7     assetImageGenerator.appliesPreferredTrackTransform = YES;
 8     assetImageGenerator.apertureMode =AVAssetImageGeneratorApertureModeEncodedPixels;
 9 
10     CGImageRef thumbnailImageRef = NULL;
11     CFTimeInterval thumbnailImageTime = time;
12     NSError *thumbnailImageGenerationError = nil;
13     thumbnailImageRef = [assetImageGenerator copyCGImageAtTime:CMTimeMake(thumbnailImageTime, 60)actualTime:NULL error:&thumbnailImageGenerationError];
14 
15     if(!thumbnailImageRef)
16         CXIMLog(@"thumbnailImageGenerationError %@",thumbnailImageGenerationError);
17 
18     UIImage *thumbnailImage = thumbnailImageRef ? [[UIImage alloc]initWithCGImage:thumbnailImageRef] : nil;
19     return thumbnailImage;
20 }

方法二：MPMoviePlayerController

1 #import <MediaPlayer/MediaPlayer.h>
2 
3 MPMoviePlayerController *moviePlayer = [[MPMoviePlayerController alloc] initWithContentURL:videoURL];
4 moviePlayer.shouldAutoplay = NO;
5 UIImage *thumbnailImage = [moviePlayer thumbnailImageAtTime:time timeOption:MPMovieTimeOptionNearestKeyFrame];

 

posted on 2017-04-11 23:35  wangtianze  阅读(4314)  评论(2)  编辑  收藏  举报

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