BBC extractor: "No video formats found"

[eegerferenc]

Checklist

• I'm reporting a broken site support issue
• I've verified that I'm running youtube-dl version 2020.09.20
• 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 bug reports including closed ones
• I've read bugs section in FAQ

Verbose log

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'https://www.bbc.com/news/av/embed/p08rnybx/54182329', u'--verbose']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.09.20
[debug] Python version 2.7.12 (CPython) - Linux-4.4.0-187-generic-i686-with-Ubuntu-16.04-xenial
[debug] exe versions: avconv 2.8.17, avprobe 2.8.17, ffmpeg 2.8.17, ffprobe 2.8.17, rtmpdump 2.4
[debug] Proxy map: {}
[bbc] 54182329: Downloading webpage
[bbc] p08rnybx: Downloading media selection XML
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 "youtube-dl/youtube-dl/youtube_dl/YoutubeDL.py", line 797, in extract_info
    ie_result = ie.extract(url)
  File "youtube-dl/youtube-dl/youtube_dl/extractor/common.py", line 532, in extract
    ie_result = self._real_extract(url)
  File "youtube-dl/youtube-dl/youtube_dl/extractor/bbc.py", line 937, in _real_extract
    self._sort_formats(formats)
  File "youtube-dl/youtube-dl/youtube_dl/extractor/common.py", line 1359, 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.

Description

BBC extractor yields "No video formats found" error message on URL of a BBC video (embedded from 3rd party website).

Command line to reproduce the issue is (incl. reference URL):
youtube-dl https://www.bbc.com/news/av/embed/p08rnybx/54182329 --verbose

Source URL of the frame (for info only):
https://hvg.hu/tudomany/20200923_influenza_koronavirus_megfazas_tunetek

[dirkf]

Fixed by #26821