Question

我正在尝试使用Twitter API从给定的推文中导入视频。但是，当我使用statuses/show端点时，它不像图像那样返回视频的任何扩展实体，而是返回链接到某个视频容器的url实体，该视频容器嵌入了包含模糊链接的视频播放器到视频。

以下是一个例子：

我正在尝试在https://twitter.com/NHL/status/633987786018717696

导入推文

使用Twitter API的statuses/show端点和推文ID，我得到了这样的回复：

{
  "created_at": "Wed Aug 19 13:04:01 +0000 2015",
  "id": 633987786018717700,
  "id_str": "633987786018717696",
  "text": "The offseason has us missing all of our fans, even the wacky ones... especially the wacky ones. #IsItOctoberYet?\nhttps://t.co/v4UGDQpa61",
  "source": "<a href="http://twitter.com" rel="nofollow">Twitter Web Client</a>",
  "truncated": false,
  "in_reply_to_status_id": null,
  "in_reply_to_status_id_str": null,
  "in_reply_to_user_id": null,
  "in_reply_to_user_id_str": null,
  "in_reply_to_screen_name": null,
  "user":  {
    "id": 50004938,
    "id_str": "50004938",
    "name": "NHL",
    "screen_name": "NHL",
    "location": "30 cities across U.S. & Canada",
    "description": "The official source of everything you need and want to know from the National Hockey League. Read before tweeting us: http://t.co/JlyVXSpqMn",
    "url": "http://t.co/VI8RlwuVr9",
    "entities":  {
      "url":  {
        "urls":  [
           {
            "url": "http://t.co/VI8RlwuVr9",
            "expanded_url": "http://www.NHL.com",
            "display_url": "NHL.com",
            "indices":  [
              0,
              22
            ]
          }
        ]
      },
      "description":  {
        "urls":  [
           {
            "url": "http://t.co/JlyVXSpqMn",
            "expanded_url": "http://nhl.com/socialmediapolicy",
            "display_url": "nhl.com/socialmediapol…",
            "indices":  [
              118,
              140
            ]
          }
        ]
      }
    },
    "protected": false,
    "followers_count": 4130811,
    "friends_count": 2646,
    "listed_count": 18479,
    "created_at": "Tue Jun 23 15:24:18 +0000 2009",
    "favourites_count": 909,
    "utc_offset": -14400,
    "time_zone": "Eastern Time (US & Canada)",
    "geo_enabled": true,
    "verified": true,
    "statuses_count": 87436,
    "lang": "en",
    "contributors_enabled": false,
    "is_translator": false,
    "is_translation_enabled": true,
    "profile_background_color": "000000",
    "profile_background_image_url": "http://pbs.twimg.com/profile_background_images/378800000139631457/fd-xWa9G.jpeg",
    "profile_background_image_url_https": "https://pbs.twimg.com/profile_background_images/378800000139631457/fd-xWa9G.jpeg",
    "profile_background_tile": false,
    "profile_image_url": "http://pbs.twimg.com/profile_images/534776558238437376/yxrm83O7_normal.jpeg",
    "profile_image_url_https": "https://pbs.twimg.com/profile_images/534776558238437376/yxrm83O7_normal.jpeg",
    "profile_banner_url": "https://pbs.twimg.com/profile_banners/50004938/1435502670",
    "profile_link_color": "040CDE",
    "profile_sidebar_border_color": "FFFFFF",
    "profile_sidebar_fill_color": "2E2E2E",
    "profile_text_color": "0F5A80",
    "profile_use_background_image": true,
    "has_extended_profile": false,
    "default_profile": false,
    "default_profile_image": false,
    "following": true,
    "follow_request_sent": false,
    "notifications": false
  },
  "geo": null,
  "coordinates": null,
  "place": null,
  "contributors": null,
  "is_quote_status": false,
  "retweet_count": 865,
  "favorite_count": 1342,
  "entities":  {
    "hashtags":  [
       {
        "text": "IsItOctoberYet",
        "indices":  [
          96,
          111
        ]
      }
    ],
    "symbols":  [],
    "user_mentions":  [],
    "urls":  [
       {
        "url": "https://t.co/v4UGDQpa61",
        "expanded_url": "https://amp.twimg.com/v/2a0210d1-4d39-4665-a749-ea34f8efef08",
        "display_url": "amp.twimg.com/v/2a0210d1-4d3…",
        "indices":  [
          113,
          136
        ]
      }
    ]
  },
      "favorited": false,
      "retweeted": false,
      "possibly_sensitive": false,
      "possibly_sensitive_appealable": false,
      "lang": "en"
    }

根据网址，视频代码的来源为https://amp.twimg.com/amplify-web-player/prod/source.html?vmap_url=https%3A%2F%2Famp.twimg.com%2Fprod%2Fmultibr_v_1%2Fvmap%2F2015%2F08%2F20%2F13%2F609fc2af-1d06-4894-80be-1c231f97557a%2Fa69baa90-58de-4d1d-b2dc-2c3ef1ab9b35.vmap&duration=91.958&image_src=https%3A%2F%2Famp.twimg.com%2Fprod%2Fdefault%2F2015%2F08%2F20%2F13%2Fe8f0b317-ba48-4cec-bf2c-da4598e2b46b_poster-67227.jpg&content_id=609fc2af-1d06-4894-80be-1c231f97557a&page=amplify_card

如果这些视频文件没有为它提供external_entity，我如何从推文中提取该视频文件？

Answer 1

Twitter API现已更改，视频存储在extended_entities对象中。根据比特率，可能有多个来源。这是检索具有最高比特率的那个：

var bitrate = 0;
var hq_video_url;
for (var j=0; j<tweet.extended_entities.media[0].video_info.variants.length; j++) {
    if (tweet.extended_entities.media[0].video_info.variants[j].bitrate) {
        if (tweet.extended_entities.media[0].video_info.variants[j].bitrate > bitrate) {
            bitrate = tweet.extended_entities.media[0].video_info.variants[j].bitrate;
            hq_video_url = tweet.extended_entities.media[0].video_info.variants[j].url;
        }
    }
}

Answer 2

使用 statuses/show 端点时，添加此选项 tweet_mode:'extended' 以获取 extended_entities 对象。响应中的此路径将包含视频网址：extended_entities.media[0].video_info.variants 示例：

[
  {
    content_type: 'application/x-mpegURL',
    url: 'https://video.twimg.com/ext_tw_video/1358226.........'
  },
  {
    bitrate: 832000,
    content_type: 'video/mp4',
    url: 'https://video.twimg.com/ext_tw_video/1358226.........'
  },
  {
    bitrate: 256000,
    content_type: 'video/mp4',
    url: 'https://video.twimg.com/ext_tw_video/1358226.........'
  }
]

Answer 3

那么，取决于你正在使用的平台......

直接连接到网址
使用二进制视频数据
通过将显示它的某个小部件泵送二进制数据（例如，字节流）。

关于如何做到这一点的具体细节将根据什么平台和你正在使用的语言。

使用Twitter API

3 个答案: