YouTube URL .MP4 Grabber

gistfile1.m

-(void)viewDidLoad {
    
    [super viewDidLoad];
    
    [[self view] setBackgroundColor:[UIColor whiteColor]];
    
    NSString *url = @"http://www.youtube.com/watch?v=8UVNT4wvIGY";
    
    [NSURLConnection sendAsynchronousRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:[url stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]]] queue:[[[NSOperationQueue alloc] init] autorelease] completionHandler:^(NSURLResponse *response, NSData *data, NSError *error) {
        
        NSString *result = [[[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding] autorelease];
        
        // result now contains the HTML code for the YouTube video
        
        result = [self mp4URLFromYoutubeContents:result];
        
        NSLog(@"The MP4 URL: %@",result);
        
    }];
    
}

-(NSString *)mp4URLFromYoutubeContents:(NSString *)string {
    
    // used throughout the function to store the components of a string
    // we store the components to check the length and optionally error handle
    NSArray *arr;
    
    // find where "var swf = " is declared
    
    arr = [string componentsSeparatedByString:@"var swf = "];
    if ([arr count] < 2) return nil;
    
    string = [arr lastObject];
    
    // copy before the "document.getElementById(..."
    
    arr = [string componentsSeparatedByString:@"document.getElementById("];
    if ([arr count] < 2) return nil;
    
    string = [arr objectAtIndex:0];
    
    // decode the url three times
    
    string = [[[string stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
                       stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding] 
                       stringByReplacingPercentEscapesUsingEncoding:NSUTF8StringEncoding];
    
    // delete before "url_encoded_fmt_stream_map="
    
    arr = [string componentsSeparatedByString:@"url_encoded_fmt_stream_map="];
    if ([arr count] < 2) return nil;
    
    string = [arr lastObject];
    
    // get all of the URLs and clean them
    
    NSMutableArray *urls = [[[string componentsSeparatedByString:@"url="] mutableCopy] autorelease];
    [urls removeObjectAtIndex:0]; // first object is just an empty string
    
    NSMutableArray *cleanURLS = [NSMutableArray array];
    
    for (NSString *url in urls) {
        
        url = [[url componentsSeparatedByString:@";+codecs="] objectAtIndex:0];
        
        NSString *lastTag = [[url componentsSeparatedByString:@"&itag="] lastObject];
        url = [[url componentsSeparatedByString:[NSString stringWithFormat:@"&itag=%@,",lastTag]] objectAtIndex:0]; 
        
        [cleanURLS addObject:url];
        
    }
        
    // cleanURLS now contains all of our nice, shiny URLs.  We want to return the .mp4 video
    
    for (NSString *url in cleanURLS) {
        
        if ([url rangeOfString:@"&type=video/mp4"].location != NSNotFound) return url;
        
    }
    
    return nil;
    
}

It doesn't works anymore :(
Tested both on iOS and Mac (with mobile and desktop user agent)

Hi! Where you able to fix the project and make it work again?

I found it very simple, but it is so simple
Not working :(