Recording from Zattoo with youtubedl doesn't work

[misteranonymus]

Checklist

• [✔] I'm reporting a broken site support
• [✔] I've verified that I'm running youtube-dl version 2020.03.24
• [✔] I've checked that all provided URLs are alive and playable in a browser
• I've checked that all URLs and arguments with special characters are properly quoted or escaped
• I've searched the bugtracker for similar issues including closed ones

Verbose log

C:\Users\root>c:\youtube-dl\youtube-dl.exe https://zattoo.com/channels\?channel\=rts_un --username ******* --password **** -f hls-3002-A-1500 --o "RTS Un - Test.mp4" -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['https://zattoo.com/channels\?channel\=rts_un', '--username', 'PRIVATE', '--password', 'PRIVATE', '-f', 'hls-3002-A-1500', '--o', 'RTS Un - Test.mp4', '-v']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2020.03.24
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: none
[debug] Proxy map: {}
[generic] channels?channel=rts_un: Requesting header
[redirect] Following redirect to https://zattoo.com/channels%5C?channel%5C=rts_un
[generic] channels?channel=rts_un: Requesting header
WARNING: Falling back on generic information extractor.
[generic] channels?channel=rts_un: Downloading webpage
[generic] channels?channel=rts_un: Extracting information
ERROR: Unsupported URL: https://zattoo.com/channels%5C?channel%5C=rts_un
Traceback (most recent call last):
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpjwbwqymm\build\youtube_dl\YoutubeDL.py", line 797, in extract_info
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpjwbwqymm\build\youtube_dl\extractor\common.py", line 530, in extract
File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpjwbwqymm\build\youtube_dl\extractor\generic.py", line 3352, in _real_extract
youtube_dl.utils.UnsupportedError: Unsupported URL: https://zattoo.com/channels%5C?channel%5C=rts_un

PASTE VERBOSE LOG HERE

Description

WRITE DESCRIPTION HERE

Here is the version of youtube-dl
C:\c:\youtube-dl\youtube-dl.exe -U youtube-dl is up-to-date (2020.03.24)