svtplay, HTTP Error 400, affecting whole site

[jonsag]

• I've verified and I assure that I'm running youtube-dl 2019.03.18

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

Verbose output:

$ youtube-dl https://www.svtplay.se/video/21526578/top-gear/top-gear-sasong-21-burma-del-2?start=auto --ignore-config --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://www.svtplay.se/video/21526578/top-gear/top-gear-sasong-21-burma-del-2?start=auto', '--ignore-config', '--verbose']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.03.18
[debug] Python version 3.6.5 (CPython) - Linux-4.9.95-gentoo-x86_64-AMD_Athlon-tm-_64_X2_Dual_Core_Processor_4400+-with-gentoo-2.6
[debug] exe versions: ffmpeg 3.4.5, ffprobe 3.4.5, rtmpdump 2.4
[debug] Proxy map: {}
[debug] Using fake IP 78.70.165.122 (SE) as X-Forwarded-For.
[SVTPlay] 21526578: Downloading webpage
[SVTPlay] 8ZmBvgG: Downloading JSON metadata
ERROR: Unable to download JSON metadata: HTTP Error 400: Bad Request (caused by <HTTPError 400: 'Bad Request'>); 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 "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 626, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2225, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib64/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib64/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib64/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)

...
<end of log>

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Something have changed on the site, also affecting older videos.

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Note: this issue is the same as issue #20430, but I thought I would make another post including more info and also following issue standards.

Thanks
/jon