YouTube examples

node-youtube-dl/YouTube/README.md

@@ -0,0 +1,76 @@
+# YouTube Downloader/Search
+### Downloades youtube videos, playlist and also searches song
+
+This is a light-weight youtube downloader and searcher.
+
+- searches by video, playlist, channel
+- obtains audio playback url.
+
+## Video commands usage :-
+### 1. video_basic_info(url : `string`)
+*This is what downloader gets first.*
+```js
+let video = await video_basic_info(url)
+```
+### 2. video_info(url : `string`)
+*This contains everything with deciphered formats along with video_details.*
+```js
+let video = await video_info(url)
+```
+### 3. formats 
+*This shows all formats availiable of a video*
+```js
+    let video = await video_info(url)
+    console.log(video.format)
+```
+
+## Playlist commands usage :-
+### 1. playlist_info(url : `string`)
+*This containes every thing about a playlist*
+```js
+let playlist = await playlist_info(url) //This only fetches first 100 songs from a playlist
+```
+
+#### 2. playlist.fetch()
+*This fetches whole playlist.*
+```js
+let playlist = await playlist_info(url) //This only fetches first 100 songs from a playlist
+await playlist.fetch() // This one fetches all songs from a playlist.
+```
+#### 3. playlist.page(page_number : `number`)
+*This gives you no. of videos from a page*
+> Pages : every 100 songs have been divided into pages. 
+> So for example: There is 782 songs in a playlist, so there will be 8 pages.
+
+```js
+let playlist = await playlist_info(url) //This only fetches first 100 songs from a playlist
+await playlist.fetch() // This one fetches all songs from a playlist.
+console.log(playlist.page(1)) // This displays first 100 songs of a playlist
+```
+#### 4. playlist.total_videos
+*This tells you total no of videos that have been fetched so far.*
+```js
+let playlist = await playlist_info(url) //This only fetches first 100 songs from a playlist
+await playlist.fetch() // This one fetches all songs from a playlist.
+console.log(playlist.total_videos) // This displays total no. of videos fetched so far.
+```
+#### 5. playlist.videoCount
+*This tells total no. of songs in a playlist.*
+```js
+let playlist = await playlist_info(url) //This only fetches first 100 songs from a playlist
+await playlist.fetch() // This one fetches all songs from a playlist.
+console.log(playlist.videoCount) // This displays total no. of videos in a playlist
+```
+
+## Search Command Usage :-
+### 1. search(url : `string`, options? : `SearchOptions`)
+*This enables all searching mechanism (video, channel, playlist)*
+```js
+let result = await search('Rick Roll')
+console.log(result[0].url)
+```
+### SearchOptions 
+```
+type?: "video" | "playlist" | "channel" | "all";
+limit?: number;
+```

node-youtube-dl/YouTube/classes/Playlist.ts

@@ -3,7 +3,6 @@ import { url_get } from "../utils/request";
 import { Thumbnail } from "./Thumbnail";
 import { Channel } from "./Channel";
 import { Video } from "./Video";
-import fs from 'fs'
 const BASE_API = "https://www.youtube.com/youtubei/v1/browse?key=";
 
 export class PlayList{
@@ -16,7 +15,7 @@ export class PlayList{
     link?: string;
     channel?: Channel;
     thumbnail?: Thumbnail;
-    videos?: [];
+    private videos?: [];
     private fetched_videos : Map<string, Video[]>
     private _continuation: { api?: string; token?: string; clientVersion?: string } = {};
     private __count : number

node-youtube-dl/YouTube/search.ts

@@ -1,5 +1,4 @@
 import { url_get } from "./utils/request";
-import fs from 'fs'
 import { ParseSearchInterface, ParseSearchResult } from "./utils/parser";
 import { Video } from "./classes/Video";
 import { Channel } from "./classes/Channel";

node-youtube-dl/YouTube/utils/cipher.ts

@@ -153,10 +153,10 @@ function download_url(format: formatOptions, sig : string){
   format.url = parsed_url.toString();
 }
 
-export async function format_decipher(format: formatOptions[], html5player : string){
+export async function format_decipher(formats: formatOptions[], html5player : string){
   let body = await url_get(html5player)
   let tokens = js_tokens(body)
-  format.forEach((format) => {
+  formats.forEach((format) => {
     let cipher = format.signatureCipher || format.cipher;
     if(cipher){
       Object.assign(format, querystring.parse(cipher))
@@ -167,7 +167,9 @@ export async function format_decipher(format: formatOptions[], html5player : str
     if(tokens && format.s){
       sig = deciper_signature(tokens, format.s)
       download_url(format, sig)
+      delete format.s
+      delete format.sp
     }
   });
-  return format
+  return formats
 }

node-youtube-dl/YouTube/utils/extractor.ts

@@ -3,30 +3,25 @@ import { format_decipher, js_tokens } from './cipher'
 import { Video } from '../classes/Video'
 import { RequestInit } from 'node-fetch'
 import { PlayList } from '../classes/Playlist'
-import fs from 'fs'
 
 const DEFAULT_API_KEY = "AIzaSyAO_FJ2SlqU8Q4STEHLGCilw_Y9_11qcW8";
 const youtube_url = /https:\/\/www.youtube.com\//g
 const video_pattern = /^((?:https?:)?\/\/)?((?:www|m)\.)?((?:youtube\.com|youtu.be))(\/(?:[\w\-]+\?v=|embed\/|v\/)?)([\w\-]+)(\S+)?$/;
 
-export interface PlaylistOptions {
-    limit?: number;
-    requestOptions?: RequestInit;
-}
-
 export async function video_basic_info(url : string){
         if(!url.match(youtube_url) || !url.match(video_pattern)) throw new Error('This is not a YouTube URL')
-        let body = await url_get(url)
+        let video_id = url.split('watch?v=')[1].split('&')[0]
+        let new_url = 'https://www.youtube.com/watch?v=' + video_id
+        let body = await url_get(new_url)
         let player_response = JSON.parse(body.split("var ytInitialPlayerResponse = ")[1].split(";</script>")[0])
         if(player_response.playabilityStatus.status === 'ERROR') throw new Error(`While getting info from url \n  ${player_response.playabilityStatus.reason}`)
-        let response = JSON.parse(body.split("var ytInitialData = ")[1].split(";</script>")[0])
         let html5player =  'https://www.youtube.com' + body.split('"jsUrl":"')[1].split('"')[0]
         let format = []
         format.push(player_response.streamingData.formats[0])
         format.push(...player_response.streamingData.adaptiveFormats)
         let vid = player_response.videoDetails
         let microformat = player_response.microformat.playerMicroformatRenderer
-        let video_details = new Video ({
+        let video_details = {
             id : vid.videoId,
             url : 'https://www.youtube.com/watch?v=' + vid.videoId,
             title : vid.title,
@@ -48,10 +43,8 @@ export async function video_basic_info(url : string){
             averageRating : vid.averageRating,
             live : vid.isLiveContent,
             private : vid.isPrivate
-        })
+        }
         return {
-            player_response,
-            response,
             html5player,
             format,
             video_details
@@ -69,9 +62,7 @@ export async function video_info(url : string) {
     }
 }
 
-export async function playlist_info(url : string , options? : PlaylistOptions) {
-    if (!options) options = { limit: 100, requestOptions: {} };
-    if(!options.limit) options.limit = 100
+export async function playlist_info(url : string) {
     if (!url || typeof url !== "string") throw new Error(`Expected playlist url, received ${typeof url}!`);
     if(url.search('(\\?|\\&)list\\=') === -1) throw new Error('This is not a PlayList URL')
 
@@ -87,7 +78,7 @@ export async function playlist_info(url : string , options? : PlaylistOptions) {
     let playlistDetails = JSON.parse(body.split('{"playlistSidebarRenderer":')[1].split("}};</script>")[0]).items;
 
     let API_KEY = body.split('INNERTUBE_API_KEY":"')[1]?.split('"')[0] ?? body.split('innertubeApiKey":"')[1]?.split('"')[0] ?? DEFAULT_API_KEY;
-    let videos = getPlaylistVideos(parsed, options.limit);
+    let videos = getPlaylistVideos(parsed, 100);
 
     let data = playlistDetails[0].playlistSidebarPrimaryInfoRenderer;
     if (!data.title.runs || !data.title.runs.length) return undefined;

node-youtube-dl/YouTube/utils/parser.ts

@@ -1,13 +1,10 @@
 import { Video } from "../classes/Video";
 import { PlayList } from "../classes/Playlist";
 import { Channel } from "../classes/Channel";
-import { RequestInit } from "node-fetch";
-import fs from 'fs'
 
 export interface ParseSearchInterface {
     type?: "video" | "playlist" | "channel" | "all";
     limit?: number;
-    requestOptions?: RequestInit;
 }
 
 export function ParseSearchResult(html :string, options? : ParseSearchInterface): (Video | PlayList | Channel)[] {

node-youtube-dl/index.ts

@@ -1,8 +1,10 @@
-import { playlist_info } from "./YouTube";
+//This File is in testing stage, everything will change in this
+import { playlist_info, video_basic_info, video_info, search } from "./YouTube";
 
 let main = async() => {
     let time_start = Date.now()
-    let playlist = await playlist_info('https://www.youtube.com/watch?v=bM7SZ5SBzyY&list=PLzkuLC6Yvumv_Rd5apfPRWEcjf9b1JRnq')
+    let result = await search('Rick Roll')
+    console.log(result[0].url)
     let time_end = Date.now()
     console.log(`Time Taken : ${(time_end - time_start)/1000} seconds`)
 }