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doluvor/Thumbnail.m

Created October 18, 2016 03:34
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Generate thumbnail of video
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Thumbnail.m
AVAsset *asset = [AVAsset assetWithURL:url];
CMTime duration = [asset duration];
CMTime snapshot = CMTimeMake(duration.value * progress, duration.timescale);
AVAssetImageGenerator *generator = [AVAssetImageGenerator assetImageGeneratorWithAsset:asset];
CGImageRef imageRef = [generator copyCGImageAtTime:snapshot actualTime:nil error:nil];
UIImage *thumbnail = [UIImage imageWithCGImage:imageRef];
CGImageRelease(imageRef);
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