[YouTube] Couldn't get high quality thumbnails

[fuzhengyin]

server response

[fuzhengyin]

The last one is https://i.ytimg.com/vi_webp/tUKfStEXf7Y/maxresdefault.webp, and not accessible

[fuzhengyin]

Is API old?
public static final String YOUTUBEI_V1_URL = "https://www.youtube.com/youtubei/v1/";
Should use v3

[fuzhengyin]

video id is tUKfStEXf7Y

[AudricV]

Is API old?
public static final String YOUTUBEI_V1_URL = "https://www.youtube.com/youtubei/v1/";
Should use v3

No, you are mixing YouTube's official API (that we can't use) and YouTube's internal API (that we are using).

We are right now always using the latest thumbnail of the thumbnails array: see the following code:

NewPipeExtractor/extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/extractors/YoutubeStreamExtractor.java

Lines 268 to 271 in 1dc8095

	// the last thumbnail is the one with the highest resolution
	final String url = thumbnails
	.getObject(thumbnails.size() - 1)
	.getString("url");

Getting all thumbnails would require to return a list of images instead of only an image. See #268 (which should be at least partially used or rebased/reused, in my opinion) for an example of implementation.

[AudricV]

@fuzhengyin I'm working on providing multiple images support on the extractor. In your case, this means that you will get in the future every thumbnail that YouTube returns on avatars, channel banners and video and playlist thumbnails.