Here, we give exact response from youtube apis.

Basics

Youtube provides details of video depend upon how much we ask. Youtube provides following types of information types:

  • Snippet
    It includes details like published date, channel Id, title, description, thumbnail images of different sizes, title of channel, tags etc.
  • ContentDetails
    It has information like duration, dimension, definition, caption etc
  • TopicDetails
    Topic information, some links from wiki of the category of video.
  • Statistics
    View count, like count, dislike count, favorite count, comment count

Information example for a Video, Information level: (snippet, contentDetails, topicDetails, statistics)

{
   "kind": "youtube#videoListResponse",
   "etag": "etag of video",
   "pageInfo": {
      "totalResults": 1,
      "resultsPerPage": 1
   },
   "items": [
      {
         "kind": "youtube#video",
         "etag": "etag of video",
         "id": "video id",
         "snippet": {
            "publishedAt": "2017-08-07T10:11:04.000Z",
            "channelId": "channel id",
            "title": "title ",
            "description": "description of video",
            "thumbnails": {
               "default": {
                  "url": "direct image url",
                  "width": 120,
                  "height": 90
               },
               "medium": {
                  "url": "direct image url",
                  "width": 320,
                  "height": 180
               },
               "high": {
                  "url": "direct image url",
                  "width": 480,
                  "height": 360
               },
               "standard": {
                  "url": "direct image url",
                  "width": 640,
                  "height": 480
               }
            },
            "channelTitle": "Channel title",
            "tags": [
               "bunch of tags, if given"
            ],
            "categoryId": "26",
            "liveBroadcastContent": "none",
            "defaultLanguage": "en-GB",
            "localized": {
               "title": "title",
               "description": "description"
            },
            "defaultAudioLanguage": "en-GB"
         },
         "contentDetails": {
            "duration": "PT3M9S",
            "dimension": "2d",
            "definition": "hd",
            "caption": "false",
            "licensedContent": true,
            "projection": "rectangular"
         },
         "statistics": {
            "viewCount": "7808",
            "likeCount": "79",
            "dislikeCount": "4",
            "favoriteCount": "0",
            "commentCount": "2"
         },
         "topicDetails": {
            "relevantTopicIds": [
               "/m/019_rr",
               "/m/03glg",
               "/m/019_rr",
               "/m/03glg"
            ],
            "topicCategories": [
               "https://en.wikipedia.org/wiki/Lifestyle_(sociology)",
               "https://en.wikipedia.org/wiki/Hobby"
            ]
         }
      }
   ]
}

Response for comment

[
   {
      "kind": "youtube#commentThread",
      "etag": "\"_gJQceDMxJ8gP-8T2HLXUoURK8c/PpbEormnuWTQWMoRKEAbm9cLjjU\"",
      "id": "UgxlmZtbyZ7m6Fk46fR4AaABAg",
      "snippet": {
         "videoId": "pV_XHKYhRgw",
         "topLevelComment": {
            "kind": "youtube#comment",
            "etag": "\"_gJQceDMxJ8gP-8T2HLXUoURK8c/yg0P6VX_GhIUPHK_GaiwR-ujZm8\"",
            "id": "UgxlmZtbyZ7m6Fk46fR4AaABAg",
            "snippet": {
               "authorDisplayName": "Afrozkanpur Afrozkanpur",
               "authorProfileImageUrl": "https://yt3.ggpht.com/-Uw6ZLZNnZL4/AAAAAAAAAAI/AAAAAAAAAAA/ZOcnswHwIPA/s28-c-k-no-mo-rj-c0xffffff/photo.jpg",
               "authorChannelUrl": "http://www.youtube.com/channel/UCp0MUsTZH1ltLNC9gkW1OKg",
               "authorChannelId": {
                  "value": "UCp0MUsTZH1ltLNC9gkW1OKg"
               },
               "videoId": "pV_XHKYhRgw",
               "textDisplay": "sir hme leminets door ka disain cahiye",
               "textOriginal": "sir hme leminets door ka disain cahiye",
               "canRate": true,
               "viewerRating": "none",
               "likeCount": 0,
               "publishedAt": "2018-02-17T08:56:20.000Z",
               "updatedAt": "2018-02-17T08:56:20.000Z"
            }
         },
         "canReply": true,
         "totalReplyCount": 0,
         "isPublic": true
      }
   },
   {
      "kind": "youtube#commentThread",
      "etag": "\"_gJQceDMxJ8gP-8T2HLXUoURK8c/btHcdg53wX3hhxluWaNjmnFvsRQ\"",
      "id": "Ugz8GM8E0ZAuiezU2ZR4AaABAg",
      "snippet": {
         "videoId": "pV_XHKYhRgw",
         "topLevelComment": {
            "kind": "youtube#comment",
            "etag": "\"_gJQceDMxJ8gP-8T2HLXUoURK8c/4WDl1bqg1ZnE49vVwLOuD4sbsC4\"",
            "id": "Ugz8GM8E0ZAuiezU2ZR4AaABAg",
            "snippet": {
               "authorDisplayName": "imran ali",
               "authorProfileImageUrl": "https://yt3.ggpht.com/-xsrhPbh8lwk/AAAAAAAAAAI/AAAAAAAAAAA/vketWZ-cMQg/s28-c-k-no-mo-rj-c0xffffff/photo.jpg",
               "authorChannelUrl": "http://www.youtube.com/channel/UC-TLzrg6yuZ4oF2hcljXPxw",
               "authorChannelId": {
                  "value": "UC-TLzrg6yuZ4oF2hcljXPxw"
               },
               "videoId": "pV_XHKYhRgw",
               "textDisplay": "nyc",
               "textOriginal": "nyc",
               "canRate": true,
               "viewerRating": "none",
               "likeCount": 1,
               "publishedAt": "2018-01-06T13:25:25.000Z",
               "updatedAt": "2018-01-06T13:25:25.000Z"
            }
         },
         "canReply": true,
         "totalReplyCount": 1,
         "isPublic": true
      },
      "replies": {
         "comments": [
            {
               "kind": "youtube#comment",
               "etag": "\"_gJQceDMxJ8gP-8T2HLXUoURK8c/0rBPE5BM07jw_ElUQvzIs9C9aPU\"",
               "id": "Ugz8GM8E0ZAuiezU2ZR4AaABAg.8b4WpG33XE58cGpxNxZcvG",
               "snippet": {
                  "authorDisplayName": "Plan n Design",
                  "authorProfileImageUrl": "https://yt3.ggpht.com/-jOyekwseTi0/AAAAAAAAAAI/AAAAAAAAAAA/Kx-yMDRdmcc/s28-c-k-no-mo-rj-c0xffffff/photo.jpg",
                  "authorChannelUrl": "http://www.youtube.com/channel/UCNNxPxH_zIPxvWy5QMFkruA",
                  "authorChannelId": {
                     "value": "UCNNxPxH_zIPxvWy5QMFkruA"
                  },
                  "videoId": "pV_XHKYhRgw",
                  "textDisplay": "Thank you so much!!",
                  "textOriginal": "Thank you so much!!",
                  "parentId": "Ugz8GM8E0ZAuiezU2ZR4AaABAg",
                  "canRate": true,
                  "viewerRating": "none",
                  "likeCount": 0,
                  "publishedAt": "2018-02-05T04:43:34.000Z",
                  "updatedAt": "2018-02-05T04:43:34.000Z"
               }
            }
         ]
      }
   }
]