Repository: youtube-dl
Issue: Youtube :  auto-generated subtitle of original language downloads but not the auto-translated subtitles
Labels: duplicate

<!--

######################################################################
  WARNING!
  IGNORING THE FOLLOWING TEMPLATE WILL RESULT IN ISSUE CLOSED AS INCOMPLETE
######################################################################

-->


## Checklist

<!--
Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.04.26. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
- Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
- Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
- Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
- Read bugs section in FAQ: http://yt-dl.org/reporting
- Finally, put x into all relevant boxes (like this [x])
-->

- [x] I'm reporting a broken site support issue
- [x] I've verified that I'm running youtube-dl version **2021.04.26**
- [x] I've checked that all provided URLs are alive and playable in a browser
- [x] I've checked that all URLs and arguments with special characters are properly quoted or escaped
- [x] I've searched the bugtracker for similar bug reports including closed ones
- [x] I've read bugs section in FAQ


## Verbose log

<!--
Provide the complete verbose output of youtube-dl that clearly demonstrates the problem.
Add the `-v` flag to your command line you run youtube-dl with (`youtube-dl -v <your command line>`), copy the WHOLE output and insert it below. It should look similar to this:
 [debug] System config: []
 [debug] User config: []
 [debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
 [debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
 [debug] youtube-dl version 2021.04.26
 [debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
 [debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
 [debug] Proxy map: {}
 <more lines>
-->

```
PASTE VERBOSE LOG HERE
```


## Description

<!--
Provide an explanation of your issue in an arbitrary form. Please make sure the description is worded well enough to be understood, see https://github.com/ytdl-org/youtube-dl#is-the-description-of-the-issue-itself-sufficient. Provide any additional information, suggested solution and as much context and examples as possible.
If work on your issue requires account credentials please provide them or explain how one can obtain them.
-->
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>