[ArteTV] The video download no longer works

[NiesmialyGosc]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2021.12.17
• 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 issues including closed ones

Verbose log

C:\Users\DELL\video\TEST2>youtube-dl --all-subs --convert-subs srt --retries 20000 -f HTTPS_SQ_1 -v https://www.arte.tv/fr/videos/060173-000-A/le-harem-du-pharaon-soleil/
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--all-subs', '--convert-subs', 'srt', '--retries', '20000', '-f', 'HTTPS_SQ_1', '-v', 'https://www.arte.tv/fr/videos/060173-000-A/le-harem-du-pharaon-soleil/']
[debug] Encodings: locale cp936, fs mbcs, out cp936, pref cp936
[debug] youtube-dl version 2021.06.06
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: ffmpeg N-89508-g1f1207145a, ffprobe N-89508-g1f1207145a
[debug] Proxy map: {'ftp': 'ftp://192.168.3.26:8080', 'https': 'https://192.168.3.26:8080', 'http': 'http://192.168.3.26:8080'}
[ArteTV] 060173-000-A: Downloading JSON metadata
ERROR: Unable to download JSON metadata: HTTP Error 500: Internal Server Error (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.
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\extractor\common.py", line 634, in _request_webpage
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpkqxnwl31\build\youtube_dl\YoutubeDL.py", line 2288, in urlopen
  File "C:\Python\Python34\lib\urllib\request.py", line 470, in open
  File "C:\Python\Python34\lib\urllib\request.py", line 580, in http_response
  File "C:\Python\Python34\lib\urllib\request.py", line 508, in error
  File "C:\Python\Python34\lib\urllib\request.py", line 442, in _call_chain
  File "C:\Python\Python34\lib\urllib\request.py", line 588, in http_error_default

Description

Please help to investigate why yt-dl only works for some of the videos, e.g: https://www.arte.tv/fr/videos/100225-000-A/sagrada-familia-le-defi-de-gaudi/, while it doesn't work at all for other videos: https://www.arte.tv/fr/videos/060173-000-A/le-harem-du-pharaon-soleil/.. Is there a reason?

Thank you!
NG

[dirkf]

See #30878.