Using NSURLs
NSString *fileName = [NSString stringWithFormat:@"%f.mp4",[[NSDate date] timeIntervalSince1970]];
NSFileManager *fileManager = [NSFileManager defaultManager];
NSURL *documentsDirectoryURL = NSURL *URLForDirectory = [[fileManager URLsForDirectory: NSDocumentDirectory inDomains:NSUserDomainMask] lastObject];
NSURL *fileURL = [NSURL URLWithString:fileName relativeToURL:URLForDirectory];
solved Objective C: How to read from saved files? [closed]