AVPlayer根据URL获取任意时间的图片

Posted 2023-02-13 果然小行家

- (UIImage*)thumbnailImageForVideo:(NSURL *)videoURL atTime:(NSTimeInterval)time

    

    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoURL options:nil];

    NSParameterAssert(asset);

    AVAssetImageGenerator *assetImageGenerator =[[AVAssetImageGenerator alloc] initWithAsset:asset];

    assetImageGenerator.appliesPreferredTrackTransform = YES;

    assetImageGenerator.apertureMode = AVAssetImageGeneratorApertureModeEncodedPixels;

    

    CGImageRef thumbnailImageRef = NULL;

    CFTimeInterval thumbnailImageTime = time;

    NSError *thumbnailImageGenerationError = nil;

    thumbnailImageRef = [assetImageGenerator copyCGImageAtTime:CMTimeMake(thumbnailImageTime, 60)actualTime:NULL error:&thumbnailImageGenerationError];

    

    if(!thumbnailImageRef)

        NSLog(@"thumbnailImageGenerationError %@",thumbnailImageGenerationError);

    

    UIImage*thumbnailImage = thumbnailImageRef ? [[UIImage alloc]initWithCGImage: thumbnailImageRef] : nil;

    

    return thumbnailImage;