Repository: yt-dlp
Issue: Support for sport1tv.ru?
Labels: site-request

### Checklist

- [X] I'm reporting a new site support request
- [X] I've verified that I'm running yt-dlp version **2022.03.08.1**. ([update instructions](https://github.com/yt-dlp/yt-dlp#update))
- [X] I've checked that all provided URLs are alive and playable in a browser
- [X] I've checked that none of provided URLs [violate any copyrights](https://github.com/ytdl-org/youtube-dl#can-you-add-support-for-this-anime-video-site-or-site-which-shows-current-movies-for-free) 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

Europe

### Example URLs

Catalog: https://sport1tv.ru/sport/kubok-pervogo-kanala-po-figurnomu-kataniyu-2022
Specific video: https://sport1tv.ru/sport/xxiv-olimpiyskie-zimnie-igry-2022-v-pekine/za-kadrom/aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr

### Description

dlp already had support for 1tv.ru site.
But it looks like for sport videos, they created additional domain: sport1tv.ru 
And those domain is not supported by dlp.
It would be nice to add those domain just as 1tv.ru

As enduser, i can said it is looks like old videos and links:
https://www.1tv.ru/sport/final-kubka-rossii-po-figurnomu-kataniyu-2021-2022/proizvolnaya-programma/zhenshiny-proizvolnaya-programma-final-kubka-rossii-po-figurnomu-kataniyu-2021-22
https://1tv.ru/sport/final-kubka-rossii-po-figurnomu-kataniyu-2021-2022/proizvolnaya-programma/anastasiya-morozova-proizvolnaya-programma-zhenshiny-final-kubka-rossii-po-figurnomu-kataniyu-2021-22

### Verbose log

```shell
./yt-dlp -vU https://sport1tv.ru/sport/xxiv-olimpiyskie-zimnie-igry-2022-v-pekine/za-kadrom/aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr
[debug] Command-line config: ['-vU', 'https://sport1tv.ru/sport/xxiv-olimpiyskie-zimnie-igry-2022-v-pekine/za-kadrom/aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, err utf-8, pref UTF-8
[debug] yt-dlp version 2022.03.08.1 [c0c2c57d3] (zip)
[debug] Python version 3.10.3 (CPython 64bit) - Linux-5.16.16-200.fc35.x86_64-x86_64-with-glibc2.34
[debug] exe versions: ffmpeg 4.4.1 (setts), ffprobe 4.4.1
[debug] Optional libraries: Crypto, sqlite
[debug] Proxy map: {}
Latest version: 2022.03.08.1, Current version: 2022.03.08.1
yt-dlp is up to date (2022.03.08.1)
[debug] [generic] Extracting URL: https://sport1tv.ru/sport/xxiv-olimpiyskie-zimnie-igry-2022-v-pekine/za-kadrom/aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr
[generic] aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr: Requesting header
WARNING: [generic] Falling back on generic information extractor.
[generic] aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr: Downloading webpage
[generic] aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr: Extracting information
[debug] Looking for video embeds
ERROR: Unsupported URL: https://sport1tv.ru/sport/xxiv-olimpiyskie-zimnie-igry-2022-v-pekine/za-kadrom/aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr
Traceback (most recent call last):
  File "/home/anleal/./yt-dlp/yt_dlp/YoutubeDL.py", line 1389, in wrapper
    return func(self, *args, **kwargs)
  File "/home/anleal/./yt-dlp/yt_dlp/YoutubeDL.py", line 1459, in __extract_info
    ie_result = ie.extract(url)
  File "/home/anleal/./yt-dlp/yt_dlp/extractor/common.py", line 617, in extract
    ie_result = self._real_extract(url)
  File "/home/anleal/./yt-dlp/yt_dlp/extractor/generic.py", line 3985, in _real_extract
    raise UnsupportedError(url)
yt_dlp.utils.UnsupportedError: Unsupported URL: https://sport1tv.ru/sport/xxiv-olimpiyskie-zimnie-igry-2022-v-pekine/za-kadrom/aleksandra-trusova-5-bystryh-voprosov-posle-olimpiyskih-igr
```