I'm using this code to load the values of key and play movie url.
[asset loadValuesAsynchronouslyForKeys:requestedKeys completionHandler:
^{
dispatch_async( dispatch_get_main_queue(),
^{
[self prepareToPlayAsset:asset withKeys:requestedKeys];
});
}];
But sometimes the method prepareToPlayAsset cannot be run and i don't know why. Someone know the reason?