Reading samples via AVAssetReader

Question

How do you read samples via AVAssetReader? I\'ve found examples of duplicating or mixing using AVAssetReader, but those loops are always controlled by the AVAssetWriter loop

Answer 1

damian's answer worked for me with video, and one minor modification: In step 3, I think the dictionary needs to be mutable:

NSMutableDictionary* dictionary = [[NSMutableDictionary alloc] init];