Cache media file while play media using AVPlayerr.
VIMediaCache use AVAssetResourceLoader to control AVPlayer download media data, then manage cache data using NSURLProtocol.
pod 'VIMediaCache'
NSURL *url = [NSURL URLWithString:@"https://mvvideo5.meitudata.com/571090934cea5517.mp4"];
VIResourceLoaderManager *resourceLoaderManager = [VIResourceLoaderManager new];
self.resourceLoaderManager = resourceLoaderManager;
AVPlayerItem *playerItem = [resourceLoaderManager playerItemWithURL:url];
AVPlayer *player = [AVPlayer playerWithPlayerItem:playerItem];
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