YouTubeStreamsExtractor

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

Install

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

Version	Package	Description
	YouTubeStreamsExtractor	.NET 8 Library
	YouTubeStreamsExtractor.JsEngine.JavaScriptEngineSwitcher	javascript engine, .NET 8 Library
	YouTubeStreamsExtractor.JsEngine.AndroidWebView	javascript engine, .NET 8 Android Library

Usage

Get streams with playable urls

using YouTubeStreamsExtractor;
using YouTubeStreamsExtractor.JsEngine.JavaScriptEngineSwitcher;

IJavaScriptEngine jsEngine = new JavaScriptJintEngine();
var youTubeStreams = new YouTubeStreams(jsEngine);
var streams = await youTubeStreams.GetAllStreamsAsync(videoUrl, prepareAllUrls: true);

If you only need a URL for one stream, set prepareAllUrls to false and use PrepareAsync() method. It doesn't need to prepare the url for each stream, which makes it faster.

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

var downloadUrl = audio.PlayableUrl.Url;

Find audio with highest bitrate

var streamSelector = new StreamSelector();
var audio = streamSelector.SelectBestAudio(streams);

var downloadUrl = audio.PlayableUrl.Url;

Find videos that match specific resolutions and/or codecs.

This will return stream with highest bitrate that has resolution 1080p and codec vp9 or null if that stream is not available.

var streamSelector = new StreamSelector(new[] { "1080p" }, new[] { "vp9" });
IVideoStreamInfo? videoStream = streamSelector.SelectPreferredVideo(streams);

This will return 1080p stream with highest bitrate. If it is not available, then 1080p60, then 720p and 720p60.

var streamSelector = new StreamSelector(new[] { "1080p", "1080p60", "720p", "720p60" });
IVideoStreamInfo? videoStream = streamSelector.SelectPreferredVideo(streams);