Repository: youtube-dl
Issue: [Pornhub] Unable to extract encoded URL
Labels: broken-IE

## Checklist

- [x] I'm reporting a broken site support
- [x] I've verified that I'm running youtube-dl version **2021.12.17**
- [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 issues including closed ones


## Verbose log
```console
D:\Software\Youtube-dl>youtube-dl https://www.pornhub.com/view_video.php?viewkey=ph60a8e6fd7b54c --verbose
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://www.pornhub.com/view_video.php?viewkey=ph60a8e6fd7b54c', '--verbose']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2021.12.17
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: none
[debug] Proxy map: {}
[PornHub] ph60a8e6fd7b54c: Downloading pc webpage
[PornHub] ph60a8e6fd7b54c: Downloading tv webpage
ERROR: Unable to extract encoded url; 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.
Traceback (most recent call last):
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpupik7c6w\build\youtube_dl\YoutubeDL.py", line 815, in wrapper
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpupik7c6w\build\youtube_dl\YoutubeDL.py", line 836, in __extract_info
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpupik7c6w\build\youtube_dl\extractor\common.py", line 534, in extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpupik7c6w\build\youtube_dl\extractor\pornhub.py", line 401, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpupik7c6w\build\youtube_dl\extractor\pornhub.py", line 338, in extract_js_vars
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpupik7c6w\build\youtube_dl\extractor\common.py", line 1012, in _search_regex
youtube_dl.utils.RegexNotFoundError: Unable to extract encoded url; 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.
```

## Description

trying to download this link, not working something wrong with the 'encoding' on the URL. not sure whats going on, went around and looked at other examples online like
youtube-dl https://www.pornhub.com/view_video.php?viewkey=ph5a591d4cdaa82 (found on https://old.reddit.com/r/DataHoarder/comments/88444v/youtubedl_and_pornhub_channels/) which shows as working for them but no longer works for me same debug message above. so i assume something has changed on the site if previous URLS work but not for me now and I dont think i can make the command any simpler to test other things. 

also updates to latest version: 
D:\Software\Youtube-dl>youtube-dl -U
youtube-dl is up-to-date (2021.12.17)