[rtve] No video formats found for videos in collection 'arqueomania'

[Martin-Laclaustra]

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

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'--verbose', u'https://www.rtve.es/alacarta/videos/arqueomania/arqueomania-primeras-civilizaciones/5562600/']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.03.24
[debug] Python version 2.7.12 (CPython) - Linux-4.15.0-96-generic-x86_64-with-LinuxMint-18.2-sonya
[debug] exe versions: avconv 2.8.15, avprobe 2.8.15, ffmpeg 2.8.15, ffprobe 2.8.15, phantomjs 2.1.1
[debug] Proxy map: {}
[rtve.es:alacarta] Fetching manager info
[rtve.es:alacarta] 5562600: Downloading JSON metadata
[rtve.es:alacarta] 5562600: Downloading url information
[rtve.es:alacarta] 5562600: Downloading m3u8 information
WARNING: Failed to download m3u8 information: HTTP Error 400: Bad Request
ERROR: No video formats found; please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how 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/lib/python2.7/dist-packages/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 530, in extract
    ie_result = self._real_extract(url)
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/rtve.py", line 152, in _real_extract
    self._sort_formats(formats)
  File "/usr/local/lib/python2.7/dist-packages/youtube_dl/extractor/common.py", line 1327, 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; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

Description

Most videos in rtve.es work without any problem. However, videos in this collection page fail with the problem described in this issue.
https://www.rtve.es/alacarta/videos/arqueomania/

[felisucoibi]

this bug i think is because these videos are very old and use .swf flash video, is like the oldets format you can find in rtve website.