ERROR: unable to extract filename

[BertVano]

Checklist

• [x ] I'm reporting a broken site support
• [ x] I've verified that I'm running youtube-dl version 2020.03.24
• [ 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

C:\Users\user>youtube-dl --verbose https://www.vijf.be/video/meisje-van-plezier/meisje-van-plezier/meisje-van-plezier-s1-aflevering-1
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--verbose', 'https://www.vijf.be/video/meisje-van-plezier/meisje-van-plezier/meisje-van-plezier-s1-aflevering-1']
[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: ffmpeg 4.2.2
[debug] Proxy map: {}
[vier] meisje-van-plezier-s1-aflevering-1: Downloading webpage
ERROR: Unable to extract filename; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
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\vier.py", line 170, in _real_extract
  File "C:\Users\dst\AppData\Roaming\Build archive\youtube-dl\ytdl-org\tmpjwbwqymm\build\youtube_dl\extractor\common.py", line 1005, in _search_regex
youtube_dl.utils.RegexNotFoundError: Unable to extract filename; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; type  youtube-dl -U  to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

Description

unable to download from this link?

[ziporah]

the problem also occurred in xbmc kode plugin retrospect. It seems to be solved in this commit:
retrospect-addon/plugin.video.retrospect@0c5c431
the video container is moved into a hero block
this is the episode regex:

        episode_regex = '<a class="program-overview__link" href="(?<url>[^"]+)">\s+<span class="program-overview__title">\s+(?<title>[^<]+)</span>.*?</a>'

the video_regex that is used :

        video_regex = r'<a(?:[^>]+data-background-image="(?<thumburl>[^"]+)")?[^>]+href="' \
                      r'(?<url>/video/[^"]+)"[^>]*>(?:\s+<div[^>]+>\s+<div [^>]+' \
                      r'data-background-image="(?<thumburl2>[^"]+)")?[\w\W]{0,1000}?' \
                      r'<h3[^>]*>(?:<span>)?(?<title>[^<]+)(?:</span>)?</h3>(?:\s+' \
                      r'(?:<div[^>]*>\s+)?<div[^>]*>[^<]+</div>\s+<div[^>]+data-timestamp=' \
                      r'"(?<timestamp>\d+)")?'

from what I can make of it, it looks like the streaming system changed completely and needs a rewrite, unfortunatly I'm not good enough in pyhton for that challenge ...