[YouTube] Video titles not respecting content language · TeamNewPipe/NewPipe#3089

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YouTubebughelp wantedlocalisation/translationrequires extractor change

Description

I carefully read the contribution guidelines and agree to them.
I checked if the issue/feature exists in the latest version.
I did use the incredible bugreport to markdown converter to paste bug reports.

The titles and descriptions for YouTube videos are not always in the language selected as the default content language, even where available. An example is this video: https://www.youtube.com/watch?v=4UDD_yw-LLw. On the YouTube website the title and description will display in English/Japanese depending on the language selected. On NewPipe the title will be in Japanese and the description in English, regardless of whether English or Japanese is selected as the default content language.

I've also noticed that when Japanese is selected in NewPipe, the titles displayed in the What's New screen and for recommended videos will still be in English when a translated title exists.

I've tried changing the default content country and my system language but this doesn't seem to have had an effect. My issue seems to be similar to the one in https://github.com/TeamNewPipe/NewPipe/issues/1513, but it was closed a while ago and the behaviour persists for me.

Thanks in advance for your help, and apologies if this is a duplicate request.

Contributor guide

Tech stack: javaandroid
Domain: mobileinternationalizationlocalization
Issue type: bug
Difficulty: 3
Estimated time: 1-2 days
Activity status: stale
Clarity: mostly clear
Prerequisites: Basic Android development knowledgeJavaUnderstanding of locale handling
Newbie friendliness: 45
Research direction: Investigate how the YouTube extractor in NewPipe retrieves video titles and descriptions. Look at the localization logic in the app's settings and how the content language preference is applied to feed items. Check the linked issue #1513 for previous work. Focus on the 'What's New' screen and recommendation feeds where titles are still in English despite having translated versions.