如何获取YouTube频道名称

Question

我在YouTube文档中搜索过，没有发现任何可以从YouTube视频中获取其他频道名称的内容。

也就是说，

我目前想从视频中获取频道名称，我只有URL，如何获取频道名称？

Answer 1

您可以通过使用YouTube Data API v3轻松做到这一点。

URL中"之后的最新部分http://www.youtube.com/watch?v="是您的VIDEO_ID.

只需做一个视频->列表，设置part="snippet"。然后您可以在响应中获取snippet.channelId。

请求是：

得到https://www.googleapis.com/youtube/v3/videos?part=snippet&id＝EhNWzcUqGbI&密钥=｛YOUR_API_key｝

以你为榜样。

您可以随时使用API资源管理器来尝试这些。

伟大的样本代码，让你开始。

Answer 2

您可以从URL中提取视频id，然后发出HTTP GET请求：

https://gdata.youtube.com/feeds/api/videos/dQw4w9WgXcQ?v=2&alt=json

其中dQw4w9WgXcQ是您感兴趣的视频id。这将返回一个JSON响应，通道名称位于author字段中（单击链接查看示例）。

有关更多信息，请参阅检索单个视频的数据和YouTube API文档的其余部分。

请参阅例如如何使用正则表达式在字符串中查找所有YouTube视频ID？了解从YouTube URL获取视频id的一些方法。

Answer 3

对于完全迷路的新手：考虑一个示例函数，它将有助于理解获取、解析、显示等的整个周期，并将youtube频道的视频专门带到您的表视图中。我没有在这里写表视图部分

        -(void)initiateRequestToYoutubeApiAndGetChannelInfo
    {
    NSString * urlYouCanUseAsSample = @"https://www.googleapis.com/youtube/v3/search?key={YOUR_API_KEY_WITHOUT_CURLY_BRACES}&channelId={CHANNEL_ID_YOU_CAN_GET_FROM_ADDRESS_BAR_WITHOUT_CURLY_BRACES}&part=snippet,id&order=date&maxResults=20";
    
    
    NSURL *url = [[NSURL alloc] initWithString: urlYouCanUseAsSample];
    
    // Create your request
    NSURLRequest *request = [NSURLRequest requestWithURL:url];
    
    
    
      // Send the request asynchronously remember to reload tableview on global thread
    [NSURLConnection sendAsynchronousRequest:request queue:[[NSOperationQueue alloc] init] completionHandler:^(NSURLResponse *response, NSData *data, NSError *connectionError) {
        
        // Callback, parse the data and check for errors
        if (data && !connectionError) {
            NSError *jsonError;
            
            NSDictionary *jsonResult = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&jsonError];
            
            if (!jsonError) {
            // better put a breakpoint here to see what is the result and how it is brought to you. Channel id name etc info should be there
                NSLog(@"%@",jsonResult);
            /// separating "items" dictionary and making array
                                 
                // 
        id keyValuePairDict = jsonResult;
        NSMutableArray * itemList = keyValuePairDict[@"items"];
                for (int i = 0; i< itemList.count; i++) {
                    
            /// separating VIDEO ID dictionary from items dictionary and string video id
                id v_id0 = itemList[i];
                NSDictionary * vid_id = v_id0[@"id"];
                id v_id = vid_id;
                NSString * video_ID = v_id[@"videoId"];
                   
           //you can fill your local array for video ids at this point
                    
               //     [video_IDS addObject:video_ID];
                    
            /// separating snippet dictionary from itemlist array
                id snippet = itemList[i];
                NSDictionary * snip = snippet[@"snippet"];
                
            /// separating TITLE and DESCRIPTION from snippet dictionary
                id title = snip;
                NSString * title_For_Video = title[@"title"];
                NSString * desc_For_Video = title[@"description"];
                
        //you can fill your local array for titles & desc at this point 
                    
                  //  [video_titles addObject:title_For_Video];
                   // [video_description addObject:desc_For_Video];
                    
                
                    
            /// separating thumbnail dictionary from snippet dictionary
                id tnail = snip;
                NSDictionary * thumbnail_ = tnail[@"thumbnails"];
                
            /// separating highresolution url dictionary from thumbnail dictionary
                id highRes = thumbnail_;
                NSDictionary * high_res = highRes[@"high"];
                
            /// separating HIGH RES THUMBNAIL IMG URL from high res dictionary
                id url_for_tnail = high_res;
                NSString * thumbnail_url = url_for_tnail[@"url"];
       //you can fill your local array for titles & desc at this point
                    [video_thumbnail_url addObject:thumbnail_url];
                   
                }
             // reload your tableview on main thread   
        //[self.tableView    performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:NO];
         performSelectorOnMainThread:@selector(reloadInputViews) withObject:nil waitUntilDone:NO];
                
          // you can log all local arrays for convenience
             //   NSLog(@"%@",video_IDS);
              //  NSLog(@"%@",video_titles);
              //  NSLog(@"%@",video_description);
              //  NSLog(@"%@",video_thumbnail_url);
            }
            else
            {
                NSLog(@"an error occurred");
            }
        }
    }];
   
    }

Answer 4

snippeturl = "https://www.googleapis.com/youtube/v3/videos?id=" + video_id + "&key=" + your_api_key + "&part=snippet"
response_snippet = urlopen(snippeturl).read()
data_snippet = json.loads(response_snippet)
channel = data_snippet['items'][0]['snippet']['channelTitle']