Yahoo Gyao! fails on some URLs

[gmarty]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.05.11
• 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

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'--dump-pages', u'https://gyao.yahoo.co.jp/player/00722/v09390/v1000000000000008126/']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.05.11
[debug] Python version 2.7.10 (CPython) - Darwin-18.5.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 4.1, ffprobe 4.1, rtmpdump 2.4
[debug] Proxy map: {}
[yahoo:gyao:player] 00722:v09390:v1000000000000008126: Downloading JSON metadata
ERROR: Unable to download JSON metadata: 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.
  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 2227, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 437, in open
    response = meth(req, response)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 550, in http_response
    'http', request, response, code, msg, hdrs)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 475, in error
    return self._call_chain(*args)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 409, in _call_chain
    result = func(*args)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 558, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)

Description

Some URLs from Yahoo Gyao! fail.
Examples of failing URLs with the error above:
https://gyao.yahoo.co.jp/player/00722/v09390/v1000000000000008126/
https://gyao.yahoo.co.jp/player/00722/v12193/v1000000000000010763/
https://gyao.yahoo.co.jp/player/00722/v09845/v1000000000000011280/

Other URLs are working perfectly fine. Here are some examples:
https://gyao.yahoo.co.jp/player/00066/v07687/v0768700000000524117/
https://gyao.yahoo.co.jp/player/00836/v09715/v0968700000000540610/
https://gyao.yahoo.co.jp/player/00111/v08174/v0805000000000531092/

If you compare the failing URLs with the ones working, you'll notice the number after https://gyao.yahoo.co.jp/player/ is different and stands for the video provider.
00722 provider is Tôei Anime BB Premium and all their videos fail consistently. All the other providers I checked are working fine.

The video from 00722 provider can be played in a browser when circumventing geolocation restrictions. It must be something that is done differently with this provider that prevent from constructing the proper URL for the JSON metadata.