检索播放列表视频YouTube API的持续时间,视频图片和视图

我正在尝试使用Youtube API检索播放列表视频的持续时间,图片和视图.我注意到我检索到的片段中没有包含这些内容.这是我到目前为止的代码:

gapi.client.setApiKey('xxxx');
gapi.client.load('youtube', 'v3', function() {

    var request = gapi.client.youtube.playlistItems.list({
      part: 'snippet, contentDetails',
      playlistId: 'PL3C9792F77CB0EE51',
      maxResults: 50
    });  

request.execute(function(response) {
    for (var i = 0; i < response.items.length; i++) {
       console.log(response.items[i].snippet.title + " published at " 
       + response.items[i].snippet.publishedAt);
       console.log(response.items[i].contentDetails.videoId);
    } 
});

console.log(response.items[i].snippet) 每个视频返回以下内容:

Object {
    publishedAt: ...,
    channelId: ...,
    title: ...,
    description: ...,
    thumbnails { ... }
}

并console.log(response.items[i].contentDetails)返回:

Object {
    videoId: ...,
}

我想可能使用videoId然后再发出请求并检索每个给定视频的持续时间,图片和视图,但我不确定如何继续

一步步.

Youtube PlayListItem具有这种结构.

  {
  "kind": "youtube#playlistItem",
  "etag": etag,
  "id": string,
  "snippet": {
    "publishedAt": datetime,
    "channelId": string,
    "title": string,
    "description": string,
    "thumbnails": {
      (key): {
        "url": string,
        "width": unsigned integer,
        "height": unsigned integer
      }
    },
    "channelTitle": string,
    "playlistId": string,
    "position": unsigned integer,
    "resourceId": {
      "kind": string,
      "videoId": string,
    }
  },
  "contentDetails": {
    "videoId": string,
    "startAt": string,
    "endAt": string,
    "note": string
  },
  "status": {
    "privacyStatus": string
  }
}

如果要检索视频图像,请在thumbnails属性上获得图像的网址.不过你也可以这样做.

http://img.youtube.com/vi//default.jpg

对于高质量版本的缩略图,请使用与此类似的网址:

http://img.youtube.com/vi//hqdefault.jpg

还有一个中等质量版本的缩略图,使用类似于总部的网址:

http://img.youtube.com/vi//mqdefault.jpg

对于缩略图的标准定义版本,请使用与此类似的URL:

http://img.youtube.com/vi//sddefault.jpg

对于缩略图的最大分辨率版本,请使用与此类似的URL:

http://img.youtube.com/vi//maxresdefault.jpg

编辑(获取视频信息)

要获得剩余的信息,您必须通过PlayListItem检索到的Id来获取videoObjet.演示

$.ajax({
    async: false,
    type: 'GET',
    url:  "https://www.googleapis.com/youtube/v3/videos?id={{videoId}}&key={{yourKey}}&part=snippet,contentDetails",
    success: function(data) {
        ...Do what you want with data...
    }
}

返回的JSON如下所示:

{
   kind: "youtube#videoListResponse",
   etag: ""oqbvhYxBE6fAbRk6m7aLlHf5s1I/jg_aG2jmpbZL5qs3yae4JnZbDs0"",
   pageInfo: {
      totalResults: 1,
      resultsPerPage: 1
   },
   items: [{
      kind: "youtube#video",
      etag: ""oqbvhYxBE6fAbRk6m7aLlHf5s1I/YQ-QRwoxkXL4UBFIFCyCwIdmtzg"",
      id: "ojCkgU5XGdg",
      contentDetails: {
         duration: "PT23M14S",
         dimension: "2d",
         definition: "hd",
         caption: "true",
         licensedContent: false
      },
      statistics: {
         viewCount: "25587",
         likeCount: "168",
         dislikeCount: "17",
         favoriteCount: "0",
         commentCount: "45"
     }
   }]
}

如果您想要检索有关视频的更多信息.你必须对查询添加partPARAM任何的下一个选择:snippet,contentDetails,fileDetails,player,processingDetails,recordingDetails,statistics,status,suggestionsÿ topicDetails.

我希望它有所帮助