Repository: yt-dlp/yt-dlp

Issue:
bfmtv.com is supported, rmc.bfmtv.com and rmcbfmplay.com are not. 
### 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 **2023.01.06** ([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

France

### Example URLs

https://rmc.bfmtv.com/replay-emissions/les-grandes-gueules/retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225.html


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

The site bfmtv.com is part of the supported sites. 

e.g.: https://www.bfmtv.com/replay-emissions/l-interview/attal-la-reforme-des-retraites-est-pour-les-francais-de-classe-moyenne_VN-202301120207.html

There is now the subdomain or "cousin domain" https://rmc.bfmtv.com which is not supported

e.g.: https://rmc.bfmtv.com/replay-emissions/les-grandes-gueules/retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225.html

Maybe there is something to do also with this one https://www.rmcbfmplay.com

e.g.: https://www.rmcbfmplay.com/video/rmc-story/les-grandes-gueules/retraites-une-reforme-trop-light?contentId=Product::NEUF_NUM23_N23852986105527C&universe=PROVIDER

### 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
[debug] Command-line config: ['-vU', 'https://rmc.bfmtv.com/replay-emissions/les-grandes-gueules/retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225.html']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8, error utf-8, screen utf-8
[debug] yt-dlp version 2023.01.06 [6becd25] (win_exe)
[debug] Python 3.8.10 (CPython AMD64 64bit) - Windows-10-10.0.17763-SP0 (OpenSSL 1.1.1k  25 Mar 2021)
[debug] exe versions: ffmpeg N-93151-gff03418348, ffprobe N-93151-gff03418348
[debug] Optional libraries: Cryptodome-3.16.0, brotli-1.0.9, certifi-2022.12.07, mutagen-1.46.0, sqlite3-2.6.0, websockets-10.4
[debug] Proxy map: {}
[debug] Loaded 1760 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: 2023.01.06, Current version: 2023.01.06
yt-dlp is up to date (2023.01.06)
[generic] Extracting URL: https://rmc.bfmtv.com/replay-emissions/les-grandes-gueules/retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225.html
[generic] retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225: Downloading webpage
WARNING: [generic] Falling back on generic information extractor
[generic] retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225: Extracting information
[debug] Looking for embeds
ERROR: Unsupported URL: https://rmc.bfmtv.com/replay-emissions/les-grandes-gueules/retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225.html
Traceback (most recent call last):
  File "yt_dlp\YoutubeDL.py", line 1502, in wrapper
  File "yt_dlp\YoutubeDL.py", line 1578, in __extract_info
  File "yt_dlp\extractor\common.py", line 680, in extract
  File "yt_dlp\extractor\generic.py", line 2523, in _real_extract
yt_dlp.utils.UnsupportedError: Unsupported URL: https://rmc.bfmtv.com/replay-emissions/les-grandes-gueules/retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225.html
```



Discussion:
> There is now the subdomain or "cousin domain" https://rmc.bfmtv.com/ which is not supported
> e.g.: https://rmc.bfmtv.com/replay-emissions/les-grandes-gueules/retraites-la-facon-dont-cette-loi-est-faite-ce-n-est-pas-bon-tacle-mehdi-ghezzar_VN-202301110225.html

This can be easily supported, the BFMTV extractor's `_VALID_URL` just needs to be updated

> Maybe there is something to do also with this one https://www.rmcbfmplay.com/
> e.g.: https://www.rmcbfmplay.com/video/rmc-story/les-grandes-gueules/retraites-une-reforme-trop-light?contentId=Product::NEUF_NUM23_N23852986105527C&universe=PROVIDER

This site's content is DRM-protected, cannot be supported

Resolving patch:
diff --git a/yt_dlp/extractor/bfmtv.py b/yt_dlp/extractor/bfmtv.py
--- a/yt_dlp/extractor/bfmtv.py
+++ b/yt_dlp/extractor/bfmtv.py
@@ -5,7 +5,7 @@
 
 
 class BFMTVBaseIE(InfoExtractor):
-    _VALID_URL_BASE = r'https?://(?:www\.)?bfmtv\.com/'
+    _VALID_URL_BASE = r'https?://(?:www\.|rmc\.)?bfmtv\.com/'
     _VALID_URL_TMPL = _VALID_URL_BASE + r'(?:[^/]+/)*[^/?&#]+_%s[A-Z]-(?P<id>\d{12})\.html'
     _VIDEO_BLOCK_REGEX = r'(<div[^>]+class="video_block"[^>]*>)'
     BRIGHTCOVE_URL_TEMPLATE = 'http://players.brightcove.net/%s/%s_default/index.html?videoId=%s'
@@ -31,6 +31,9 @@ class BFMTVIE(BFMTVBaseIE):
             'uploader_id': '876450610001',
             'upload_date': '20201002',
             'timestamp': 1601629620,
+            'duration': 44.757,
+            'tags': ['bfmactu', 'politique'],
+            'thumbnail': 'https://cf-images.eu-west-1.prod.boltdns.net/v1/static/876450610001/5041f4c1-bc48-4af8-a256-1b8300ad8ef0/cf2f9114-e8e2-4494-82b4-ab794ea4bc7d/1920x1080/match/image.jpg',
         },
     }]
 
@@ -81,6 +84,20 @@ class BFMTVArticleIE(BFMTVBaseIE):
     }, {
         'url': 'https://www.bfmtv.com/sante/covid-19-oui-le-vaccin-de-pfizer-distribue-en-france-a-bien-ete-teste-sur-des-personnes-agees_AN-202101060275.html',
         'only_matching': True,
+    }, {
+        'url': 'https://rmc.bfmtv.com/actualites/societe/transports/ce-n-est-plus-tout-rentable-le-bioethanol-e85-depasse-1eu-le-litre-des-automobilistes-regrettent_AV-202301100268.html',
+        'info_dict': {
+            'id': '6318445464112',
+            'ext': 'mp4',
+            'title': 'Le plein de bioéthanol fait de plus en plus mal à la pompe',
+            'description': None,
+            'uploader_id': '876630703001',
+            'upload_date': '20230110',
+            'timestamp': 1673341692,
+            'duration': 109.269,
+            'tags': ['rmc', 'show', 'apolline de malherbe', 'info', 'talk', 'matinale', 'radio'],
+            'thumbnail': 'https://cf-images.eu-west-1.prod.boltdns.net/v1/static/876630703001/5bef74b8-9d5e-4480-a21f-60c2e2480c46/96c88b74-f9db-45e1-8040-e199c5da216c/1920x1080/match/image.jpg'
+        }
     }]
 
     def _real_extract(self, url):


Test patch: