YouTubeStreamsExtractor.JsEngine.JavaScriptEngineSwitcher 1.0.1

YouTubeStreamsExtractor

YouTubeStreamsExtractor is a library for extracting url for downloading audio and video streams from YouTube videos. It's based on yt-dlp

Install

Install YouTubeStreamsExtractor and one of the javascript engines or implement IJavaScriptEngine interface.

Version	Package	Description
	YouTubeStreamsExtractor	.NET 6 Library
	YouTubeStreamsExtractor.JsEngine.JavaScriptEngineSwitcher	javascript engine, .NET 6 Library
	YouTubeStreamsExtractor.JsEngine.AndroidWebView	javascript engine, .NET 6 Android Library

Usage

Get streams with playable urls

using YouTubeStreamsExtractor;
using YouTubeStreamsExtractor.JsEngine.JavaScriptEngineSwitcher;

IJavaScriptEngine jsEngine = new JavaScriptJurassicEngine();
var youTubeStreams = new YouTubeStreams(jsEngine);

Find audio with highest bitrate

var streams = await youTubeStreams.GetAllStreamsAsync(videoUrl, true);
var streamSelector = new StreamSelector();
var audio = streamSelector.SelectBestAudio(streams);

var downloadUrl = audio.PlayableUrl.Url;

If you only need a URL for one stream, use this method. It doesn't need to prepare the url for each stream, which makes it faster.

var streams = await youTubeStreams.GetAllStreamsAsync(url, false);
var audio = streamSelector.SelectBestAudio(streams2);
await audio.PlayableUrl.PrepareAsync(audio.RawUrl, youTubeStreams.Decryptor);

var downloadUrl = audio.PlayableUrl.Url;

YouTubeStreamsExtractor.JsEngine.JavaScriptEngineSwitcher

Uses JavaScript Engine Switcher with Jurassic and NiL.JS engines to execute js code.
This is the simplest implementation but sometimes it might not be able to execute js code to descramble 'n' parameter, this will result in throttled download speed.

YouTubeStreamsExtractor.JsEngine.AndroidWebView

Uses WebView to execute js code.