[twitter] some embedded videos are not properly detected

[ProgrammerAKL]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2019.07.02
• 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

youtube-dl -o "C:/Video/%(title)s.%(ext)s" "https://twitter.com/PGATOUR/status/1145463344926642176" --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-o', 'C:/Video/%(title)s.%(ext)s', 'https://twitter.com/PGATOUR/status/1145463344926642176', '--verbose']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2019.07.02
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.10586
[debug] exe versions: phantomjs 2.1.1
[debug] Proxy map: {}
[twitter] 1145463344926642176: Downloading webpage
[twitter:card] 1145463344926642176: Downloading webpage
[twitter:card] 1145463344926642176: Downloading guest token
[twitter:card] 1145463344926642176: 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 "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmphnjfkuku\build\youtube_dl\extractor\common.py", line 627, in _request_webpage
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmphnjfkuku\build\youtube_dl\YoutubeDL.py", line 2227, 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

The embedded video is not being detected even though it is clearly playable. This problem might only be happening with periscope videos embedded on twitter, or it might be broader than that.