Repository: yt-dlp
Issue: [DFFB] Vimeo embed not detected.
Labels: site-bug

### 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 broken site
- [X] I've verified that I'm running yt-dlp version **2022.09.01** ([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 all URLs and arguments with special characters are [properly quoted or escaped](https://github.com/yt-dlp/yt-dlp/wiki/FAQ#video-url-contains-an-ampersand--and-im-getting-some-strange-output-1-2839-or-v-is-not-recognized-as-an-internal-or-external-command)
- [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)
- [ ] 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 I'm willing to share it if required

### Region

_No response_

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

Example URL:
https://dffb-archiv.de/dffb/subjektituede

Yt-dlp returns an `Unsupported URL` error with this website although it uses Vimeo embeds: https://player.vimeo.com/video/128349500

### 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', '--ffmpeg-location', 'C:\\Program Files\\ffmpeg-master-latest-win64-gpl\\bin', 'https://dffb-archiv.de/dffb/subjektituede']
[debug] Encodings: locale cp1252, fs utf-8, pref cp1252, out utf-8 (No VT), error utf-8 (No VT), screen utf-8 (No VT)
[debug] yt-dlp version 2022.09.01 [5d7c7d6] (win32_exe)
[debug] Python 3.8.10 (CPython 64bit) - Windows-8.1-6.3.9600-SP0
[debug] Checking exe version: "C:\Program Files\ffmpeg-master-latest-win64-gpl\bin\ffmpeg" -bsfs
[debug] Checking exe version: "C:\Program Files\ffmpeg-master-latest-win64-gpl\bin\ffprobe" -bsfs
[debug] exe versions: ffmpeg N-106989-gb033913d1c-20220524 (setts), ffprobe N-106989-gb033913d1c-20220524
[debug] Optional libraries: Cryptodome-3.15.0, brotli-1.0.9, certifi-2022.06.15, mutagen-1.45.1, sqlite3-2.6.0, websockets-10.3
[debug] Proxy map: {}
[debug] Loaded 1670 extractors
[debug] Fetching release info: https://api.github.com/repos/yt-dlp/yt-dlp/releases/latest
Latest version: 2022.09.01, Current version: 2022.09.01
yt-dlp is up to date (2022.09.01)
[debug] [generic] Extracting URL: https://dffb-archiv.de/dffb/subjektituede
[generic] subjektituede: Downloading webpage
WARNING: [generic] Falling back on generic information extractor
[generic] subjektituede: Extracting information
[debug] Looking for Brightcove embeds
[debug] Looking for embeds
ERROR: Unsupported URL: https://dffb-archiv.de/dffb/subjektituede
Traceback (most recent call last):
  File "yt_dlp\YoutubeDL.py", line 1459, in wrapper
  File "yt_dlp\YoutubeDL.py", line 1535, in __extract_info
  File "yt_dlp\extractor\common.py", line 670, in extract
  File "yt_dlp\extractor\generic.py", line 3078, in _real_extract
yt_dlp.utils.UnsupportedError: Unsupported URL: https://dffb-archiv.de/dffb/subjektituede
```