Repository: youtube-dl
Issue: sportschau.de video not detected
Labels: broken-IE

<!--

######################################################################
  WARNING!
  IGNORING THE FOLLOWING TEMPLATE WILL RESULT IN ISSUE CLOSED AS INCOMPLETE
######################################################################

-->


## Checklist

<!--
Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2021.12.17. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
- Make sure that all provided video/audio/playlist URLs (if any) are alive and playable in a browser.
- Make sure that all URLs and arguments with special characters are properly quoted or escaped as explained in http://yt-dl.org/escape.
- Search the bugtracker for similar issues: http://yt-dl.org/search-issues. DO NOT post duplicates.
- Finally, put x into all relevant boxes (like this [x])
-->

- [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

<!--
Provide the complete verbose output of youtube-dl that clearly demonstrates the problem.
Add the `-v` flag to your command line you run youtube-dl with (`youtube-dl -v <your command line>`), copy the WHOLE output and insert it below. It should look similar to this:
 [debug] System config: []
 [debug] User config: []
 [debug] Command-line args: [u'-v', u'http://www.youtube.com/watch?v=BaW_jenozKcj']
 [debug] Encodings: locale cp1251, fs mbcs, out cp866, pref cp1251
 [debug] youtube-dl version 2021.12.17
 [debug] Python version 2.7.11 - Windows-2003Server-5.2.3790-SP2
 [debug] exe versions: ffmpeg N-75573-g1d0487f, ffprobe N-75573-g1d0487f, rtmpdump 2.4
 [debug] Proxy map: {}
 <more lines>
-->

```
andreas@andreas2:~$ youtube-dl -v https://www.sportschau.de/schach/video-spasski-gegen-fischer-das-schachspiel-des-jahrhunderts-100.html
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'https://www.sportschau.de/schach/video-spasski-gegen-fischer-das-schachspiel-des-jahrhunderts-100.html']
[debug] Encodings: locale UTF-8, fs utf-8, out utf-8, pref UTF-8
[debug] youtube-dl version 2021.12.17
[debug] Python version 3.9.2 (CPython) - Linux-5.10.0-16-amd64-x86_64-with-glibc2.31
[debug] exe versions: ffmpeg 4.3.4-0, ffprobe 4.3.4-0, rtmpdump 2.4
[debug] Proxy map: {}
[WDRPage] video-spasski-gegen-fischer-das-schachspiel-des-jahrhunderts-100: Downloading webpage
[download] Downloading playlist: video-spasski-gegen-fischer-das-schachspiel-des-jahrhunderts-100
[WDRPage] playlist video-spasski-gegen-fischer-das-schachspiel-des-jahrhunderts-100: Collected 0 video ids (downloading 0 of them)
[download] Finished downloading playlist: video-spasski-gegen-fischer-das-schachspiel-des-jahrhunderts-100
```


## Description

<!--
Provide an explanation of your issue in an arbitrary form. Provide any additional information, suggested solution and as much context and examples as possible.
If work on your issue requires account credentials please provide them or explain how one can obtain them.
-->

I have checked the issues and found a closed issue that sportschau.de is supported. But the video above cannot be downloaded. I also checked several other videos from sportschau.de and they cannot be downloaded too. I was able to find the same video in the ARD Mediathek (ARDBetaMediathek) and there the download works:
https://www.ardmediathek.de/video/sportschau/spasski-gegen-fischer-das-schachspiel-des-jahrhunderts/das-erste/Y3JpZDovL3Nwb3J0c2NoYXUuZGUvc3BvcnRzY2hhdS1mZm1wZWctdmlkZW8tNTg0MTE4OQ

By the way, the WDR (WDRPage) is part of the ARD (ARDBetaMediathek) and the sportschau.de is driven by the ARD. Maybe there are internal redirects that confuse youtube-dl?