NSDate *todaysDate = [NSDate new];
NSDateFormatter *formatter = [NSDateFormatter new];
[formatter setDateFormat:@"MM-dd-yyyy HH:mm:ss"];
NSString *strDateTime = [formatter stringFromDate:todaysDate];
NSString *strFileName = [NSString stringWithFormat:@"/Users/Shared/Recording_%@.mov",strDateTime];
NSLog(@"filename:%@",strFileName);
Log will be : filename:/Users/Shared/Recording_06-28-2016 12:53:26.mov