List videos with a given word - youtube

Question

As you know, youtube has a property that there are subtitles of videos with soft-coded. By clicking cc it can be seen. There is also a website helping a guy to learn pronounciation of a english word, www.youglish.com
The website searches subtitled videos a given word and brings the part of it with the word said. That is, it is able to search videos by subtitle. What is the way/method/step(s) to do that? Besides, ibm has a work similar that

Answer 1

You can use search.list for request videos that:
has closed caption.
matches with the search terms.
In this example, this is the search.list request for search videos with closecaption enabled and that matches with the search term (charming):
https://www.googleapis.com/youtube/v3/search?part=snippet&maxResults=4&q=charming&type=video&videoCaption=closedCaption&fields=items(id(channelId%2Ckind%2CvideoId)%2Ckind%2Csnippet(channelTitle%2Cdescription%2Ctitle))&key={YOUR_API_KEY}
Demo available in Google API Explorer:
These are the results:
{
"items": [
{
"kind": "youtube#searchResult",
"id": {
"kind": "youtube#video",
"videoId": "ztsbgEUzVpc"
},
"snippet": {
"title": "CHARMING Official Trailer (2018) Demi Lovato, Sia, Animation Movie HD",
"description": "CHARMING Official Trailer © 2018 - Smith Global Media Comedy, Kids, Family and Animated Film, Blockbuster, Action Cinema, Blockbuster, Scifi Movie or ...",
"channelTitle": "ONE Media"
}
},
{
"kind": "youtube#searchResult",
"id": {
"kind": "youtube#video",
"videoId": "sO5F8DulPPk"
},
"snippet": {
"title": "How to be more Charismatic - 6 Charisma Tips to be more Charming and Attractive",
"description": "Use my FREE 27 Confidence-Boosting Hacks: https://practicalpie.com/confidence/ Want my TOP 10 book list?: https://practicalpie.com/book-list/ Get a girl to like ...",
"channelTitle": "Practical Psychology"
}
},
{
"kind": "youtube#searchResult",
"id": {
"kind": "youtube#video",
"videoId": "gesBAZo2_l4"
},
"snippet": {
"title": "9 Tricks to Be the Most Charming Person in the Room",
"description": "How to be a bit more charming? Some people could easily gain the trust of everyone and create a positive image of themselves? Jeff Haden, one of the most ...",
"channelTitle": "BRIGHT SIDE"
}
},
{
"kind": "youtube#searchResult",
"id": {
"kind": "youtube#video",
"videoId": "wMVPU3uUc5g"
},
"snippet": {
"title": "10 Signs You Are An Exceptionally Charming Person",
"description": "If you have these signs you are an exceptionally charming person – even if you don't think you are! Charm is the power or quality of delighting, attracting or ...",
"channelTitle": "BRAINY DOSE"
}
}
]
}
Unfortunately, not all returned videos has (in is captions) the given word - in this case, the word: charming.
Hence, you have to loop the videos returned in the search.list response and select the one who has indeed the given word.
Next, you can get the captions by passing the videoId:
You can use this URL for get the captions:
https://video.google.com/timedtext?type=track&v=<VIDEO_ID>&id=0&lang=en
The working jsfiddle for retrieve the captions by modifying the URl and add the videoId is here.