Get Youtube information via JSON for single video (not feed) in Javascript

Question

So I am trying to get information from a single youtube video via in the JSON format. Like title description category, ect whatever I can get besides the comments. I am trying to do this in Javascript. I noticed the link below but all of their examples are how to get video information from feeds. I would like to get the information from a single video assuming i know its ID.

https://developers.google.com/youtube/2.0/developers_guide_json

I was also looking at this Stackoverflow Question but I have an issue with the get request it says "test.js (line 10) GET http://gdata.youtube.com/feeds/api/videos/VA770w...v=2&alt=json-in-script&callback=listInfo

200 OK 9ms"

In brief, if i have a single youtube videos id like VA770wpLX-Q, what would the url look like to get that videos information in JSON?

Thank you

Answer 1

UPDATED 2018

API v2 deprecated. New youtube api v3 works only with developer token and has limitation for free connections.

You can get JSON without API:

http://www.youtube.com/oembed?url=http://www.youtube.com/watch?v=ojCkgU5XGdg&format=json

Or xml

http://www.youtube.com/oembed?url=http://www.youtube.com/watch?v=ojCkgU5XGdg&format=xml

new 2018 json response has

{
  "html": "<iframe width=\"480\" height=\"270\" src=\"https://www.youtube.com/embed/ojCkgU5XGdg?feature=oembed\" frameborder=\"0\" allow=\"autoplay; encrypted-media\" allowfullscreen></iframe>",
  "title": "Creativity and Drugs (Eng Sub)",
  "thumbnail_height": 360,
  "provider_name": "YouTube",
  "author_url": "https://www.youtube.com/user/serebniti",
  "thumbnail_width": 480,
  "height": 270,
  "provider_url": "https://www.youtube.com/",
  "type": "video",
  "width": 480,
  "version": "1.0",
  "author_name": "serebniti",
  "thumbnail_url": "https://i.ytimg.com/vi/ojCkgU5XGdg/hqdefault.jpg"
}

Thumbs:

hqdefault.jpg has less quality but always exist.

http://img.youtube.com/vi/ojCkgU5XGdg/hqdefault.jpg

http://img.youtube.com/vi/ojCkgU5XGdg/sddefault.jpg

Max size

https://i.ytimg.com/vi/ojCkgU5XGdg/maxresdefault.jpg

Mini thumbs:

http://img.youtube.com/vi/ojCkgU5XGdg/0.jpg
http://img.youtube.com/vi/ojCkgU5XGdg/1.jpg
http://img.youtube.com/vi/ojCkgU5XGdg/2.jpg
http://img.youtube.com/vi/ojCkgU5XGdg/3.jpg

Annotations

http://www.youtube.com/annotations_invideo?cap_hist=1&video_id=ojCkgU5XGdg

parse mobile page 16kb

https://m.youtube.com/watch?v=ojCkgU5XGdg

don't forget change user agent to iOS / Safari 7

also

http://www.youtube.com/get_video_info?html5=1&video_id=ojCkgU5XGdg

also how embed youtube live

https://www.youtube.com/embed/live_stream?channel=UCkA21M22vGK9GtAvq3DvSlA

Where UCkA21M22vGK9GtAvq3DvSlA is your channel id. You can find it inside youtube account on "My Channel" link.

Live thumb

https://i.ytimg.com/vi/W-fSCPrYSL8/hqdefault_live.jpg