RTL Most download broken

Checklist

• I’m reporting a broken site support
• I’ve verified that I’m running youtube-dl version 2020.05.03
• 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

youtube-dl https://www.rtlmost.hu/rocket-power-p_16687/rocket-power-1-resz-c_12599943
[6play] 12599943: Downloading JSON metadata
[6play] 12599943: Downloading webpage
[6play] 12599943: Downloading m3u8 information
WARNING: Failed to download m3u8 information: HTTP Error 404: Not Found
[6play] 12599943: Downloading MPD manifest
WARNING: Failed to download MPD manifest: HTTP Error 404: Not Found
[6play] 12599943: Downloading m3u8 information
WARNING: Failed to download m3u8 information: HTTP Error 404: Not Found
[6play] 12599943: Downloading MPD manifest
WARNING: Failed to download MPD manifest: HTTP Error 404: Not Found
[6play] 12599943: Downloading m3u8 information
WARNING: Failed to download m3u8 information: HTTP Error 404: Not Found
[6play] 12599943: Downloading MPD manifest
WARNING: Failed to download MPD manifest: HTTP Error 404: Not Found
ERROR: No video formats found; 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

Download from rtlmost.hu is broken.

[Boba0514]

I’ve experienced it working with some videos (Capak kozott S01) but not with others (Capak kozott S02). Log:

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'https://www.rtlmost.hu/capak-kozott-p_13063/capak-kozott-2-evad-2-resz-c_12620805', u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.05.08
[debug] Python version 2.7.18rc1 (CPython) - Linux-5.4.0-29-generic-x86_64-with-Ubuntu-20.04-focal
[debug] exe versions: ffmpeg 4.2.2, ffprobe 4.2.2, rtmpdump 2.4
[debug] Proxy map: {}
[6play] 12620805: Downloading JSON metadata
ERROR: No video formats found; 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 "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/sixplay.py", line 113, in _real_extract
    self._sort_formats(formats)
  File "/usr/local/bin/youtube-dl/youtube_dl/extractor/common.py", line 1350, in _sort_formats
    raise ExtractorError('No video formats found')
ExtractorError: No video formats found; 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.

[dirkf]

rtlmost.hu uses the same web structure as 6play.fr (M6).