Repository: yt-dlp
Issue: Support for OnlyFans.com (live videos)
Labels: site-request,NSFW,account-needed,can-share-account

### DO NOT REMOVE OR SKIP THE ISSUE TEMPLATE

- [X] I understand that I will be **blocked** if I remove or skip any mandatory\* field

### Checklist

- [X] I'm reporting a new site support request
- [X] I've verified that I'm running yt-dlp version **2022.11.11** ([update instructions](https://github.com/yt-dlp/yt-dlp#update)) or later (specify commit)
- [X] I've checked that all provided URLs are playable in a browser with the same IP and same login details
- [X] I've checked that none of provided URLs [violate any copyrights](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#is-the-website-primarily-used-for-piracy) or contain any [DRM](https://en.wikipedia.org/wiki/Digital_rights_management) to the best of my knowledge
- [X] I've searched the [bugtracker](https://github.com/yt-dlp/yt-dlp/issues?q=) for similar issues **including closed ones**. DO NOT post duplicates
- [X] I've read the [guidelines for opening an issue](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#opening-an-issue)
- [X] I've read about [sharing account credentials](https://github.com/yt-dlp/yt-dlp/blob/master/CONTRIBUTING.md#are-you-willing-to-share-account-details-if-needed) and am willing to share it if required

### Region

_No response_

### Example URLs

https://onlyfans.com/kslibrarygirl/live
-> https://stream1-dc2.onlyfans.com/hls/dc1-room-7do2yCiqeX3Jis3/index.m3u8
-> https://stream1-dc2.onlyfans.com/hls/dc1-room-7do2yCiqeX3Jis3/5/index.m3u8
-> https://stream3.onlyfans.com/hls/dc1-room-7do2yCiqeX3Jis3/index.m3u8
-> https://stream3.onlyfans.com/hls/dc1-room-7do2yCiqeX3Jis3/5/index.m3u8

### Provide a description that is worded well enough to be understood

This request is to add OnlyFans support to yt-dlp. There is no any programs that support live stream captures of that site, so I'm requesting support for that in the first place. 

### Provide verbose output that clearly demonstrates the problem

- [X] Run **your** yt-dlp command with **-vU** flag added (`yt-dlp -vU <your command line>`)
- [X] Copy the WHOLE output (starting with `[debug] Command-line config`) and insert it below

### Complete Verbose Output

```shell
C:\>yt-dlp -vU https://stream1-dc2.onlyfans.com/hls/dc1-room-7do2yCiqeX3Jis3/ind
ex.m3u8
[debug] Command-line config: ['-vU', 'https://stream1-dc2.onlyfans.com/hls/dc1-r
oom-7do2yCiqeX3Jis3/index.m3u8']
[debug] User config "C:\Users\Username\AppData\Roaming\yt-dlp\config.txt": ['--id']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8 (No VT), erro
r utf-8 (No VT), screen utf-8 (No VT)
[debug] yt-dlp version 2022.11.11 [8b64402] (pip)
[debug] Python 3.7.9 (CPython AMD64 64bit) - Windows-7-6.1.7601-SP1 (OpenSSL 1.1
.1g  21 Apr 2020)
[debug] exe versions: ffmpeg 4.3.1, ffprobe 4.3.1
[debug] Optional libraries: Cryptodome-3.14.1, brotli-1.0.9, certifi-2020.11.08,
 mutagen-1.45.1, sqlite3-2.6.0, websockets-10.2
[debug] Proxy map: {}
[debug] Loaded 1723 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releas
es/latest
Latest version: 2022.11.11, Current version: 2022.11.11
yt-dlp is up to date (2022.11.11)
[debug] [generic] Extracting URL: https://stream1-dc2.onlyfans.com/hls/dc1-room-
7do2yCiqeX3Jis3/index.m3u8
[generic] index: Downloading webpage
ERROR: [generic] Unable to download webpage: HTTP Error 403: Forbidden (caused b
y <HTTPError 403: 'Forbidden'>); please report this issue on  https://github.com
/yt-dlp/yt-dlp/issues?q= , filling out the appropriate issue template. Confirm y
ou are on the latest version using  yt-dlp -U
  File "C:\Program Files\Python37\lib\site-packages\yt_dlp\extractor\common.py",
 line 674, in extract
    ie_result = self._real_extract(url)
  File "C:\Program Files\Python37\lib\site-packages\yt_dlp\extractor\generic.py"
, line 2584, in _real_extract
    **smuggled_data.get('http_headers', {})
  File "C:\Program Files\Python37\lib\site-packages\yt_dlp\extractor\common.py",
 line 825, in _request_webpage
    raise ExtractorError(errmsg, cause=err)

  File "C:\Program Files\Python37\lib\site-packages\yt_dlp\extractor\common.py",
 line 807, in _request_webpage
    return self._downloader.urlopen(self._create_request(url_or_request, data, h
eaders, query))
  File "C:\Program Files\Python37\lib\site-packages\yt_dlp\YoutubeDL.py", line 3
692, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "C:\Program Files\Python37\lib\urllib\request.py", line 531, in open
    response = meth(req, response)
  File "C:\Program Files\Python37\lib\urllib\request.py", line 641, in http_resp
onse
    'http', request, response, code, msg, hdrs)
  File "C:\Program Files\Python37\lib\urllib\request.py", line 569, in error
    return self._call_chain(*args)
  File "C:\Program Files\Python37\lib\urllib\request.py", line 503, in _call_cha
in
    result = func(*args)
  File "C:\Program Files\Python37\lib\urllib\request.py", line 649, in http_erro
r_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden
```