Youtube : auto-generated subtitle of original language downloads but not the auto-translated subtitles

Checklist

• I’m reporting a broken site support issue
• I’ve verified that I’m running youtube-dl version 2021.04.26
• I’ve checked that all provided URLs are alive and playable in a browser
• I’ve checked that all URLs and arguments with special characters are properly quoted or escaped
• I’ve searched the bugtracker for similar bug reports including closed ones
• I’ve read bugs section in FAQ

Verbose log

PASTE VERBOSE LOG HERE

Description

For youtube German video https://www.youtube.com/watch?v=nYh32GMnaG4 , youtube-dl downloaded the German auto-generated subtitles, but not French and English which are auto-generated. This error is for Youtube-dl versions: 2021.04.06 and 2021.03.25.

The error output after running youtube-dl in Windows command (DOS box):-

C:\tools\youtube-dl>youtube-dl --version 2021.04.26

C:\tools\youtube-dl>youtube-dl --write-auto-sub --sub-lang de,en,fr --skip-downl oad https://www.youtube.com/watch?v=nYh32GMnaG4 [youtube] nYh32GMnaG4: Downloading webpage [info] Writing video subtitles to: Filmfest München 2016 I Brunhilde Pomsel EIN DEUTSCHES LEBEN-nYh32GMnaG4.en.vtt WARNING: Unable to download subtitle for “en”: Unable to download webpage: HTTP Error 404: Not Found (caused by HTTPError()); please report this issue on https: //yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl - U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output. [info] Writing video subtitles to: Filmfest München 2016 I Brunhilde Pomsel EIN DEUTSCHES LEBEN-nYh32GMnaG4.de.vtt [info] Writing video subtitles to: Filmfest München 2016 I Brunhilde Pomsel EIN DEUTSCHES LEBEN-nYh32GMnaG4.fr.vtt WARNING: Unable to download subtitle for “fr”: Unable to download webpage: HTTP Error 404: Not Found (caused by HTTPError()); please report this issue on https: //yt-dl.org/bug . Make sure you are using the latest version; type youtube-dl - U to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

C:\tools\youtube-dl>

[nestukh]

I have this problem too (or similar). This video https://www.youtube.com/watch?v=tVRjB-hv4BE has English subtitles, provided by the creators. You can choose to auto-translate those in your language, and are of much better quality of those auto-generated in your language you can embed via youtube-dl.

In short:

• on youtube, you can watch that video with:
  • English (provided) subtitles,
  • English (auto-generated) subtitles,
  • Your Language (auto-translated from the provided ones) subtitles.
• in youtube-dl, you can download and embed that video with:
  • English (provided) subtitles,
  • English (auto-generated) subtitles,
  • Your Language (auto-translated from the auto-generated ones) subtitles.

Is there a way to download the subtitles in Your Language, the variant auto-translated by youtube from the provided ones?

[dirkf]

Duplicate of #28258.