dailymotion - ERROR: unable to download video data: HTTP Error 404: Not Found

[WoodpeckerBaby]

Checklist

• I'm reporting a broken site support
• I've verified that I'm running youtube-dl version 2020.06.16.1
• 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.dailymotion.com/video/x7u7219 --ignore-config -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'https://www.dailymotion.com/video/x7u7219', u'--ignore-config', u'-v']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2020.06.16.1
[debug] Python version 2.7.16 (CPython) - Darwin-19.5.0-x86_64-i386-64bit
[debug] exe versions: ffmpeg 4.3.1, ffprobe 4.3.1, rtmpdump 2.4
[debug] Proxy map: {}
[dailymotion] Downloading Access Token
[dailymotion] x7u7219: Downloading media JSON metadata
[dailymotion] x7u7219: Downloading metadata JSON
[dailymotion] x7u7219: Downloading m3u8 information
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on u'https://proxy-05.ty4.dailymotion.com/sec(u0jljuz7LYYKNTAusZhSBtPjtGhMqTQk7tPxtNxUpNTv1P-AEM7xxL3c6l5k4oBH5GMNQaqbKAd0zHGe5TEf2w)/video/149/089/473980941_mp4_h264_aac_fhd.mp4'
ERROR: unable to download video data: HTTP Error 404: Not Found
Traceback (most recent call last):
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1926, in process_info
    success = dl(filename, info_dict)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1865, in dl
    return fd.download(name, info)
  File "/usr/local/bin/youtube-dl/youtube_dl/downloader/common.py", line 366, in download
    return self.real_download(filename, info_dict)
  File "/usr/local/bin/youtube-dl/youtube_dl/downloader/http.py", line 341, in real_download
    establish_connection()
  File "/usr/local/bin/youtube-dl/youtube_dl/downloader/http.py", line 109, in establish_connection
    ctx.data = self.ydl.urlopen(request)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 2238, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 435, in open
    response = meth(req, response)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 548, in http_response
    'http', request, response, code, msg, hdrs)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 473, in error
    return self._call_chain(*args)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 407, in _call_chain
    result = func(*args)
  File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/urllib2.py", line 556, in http_error_default
    raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
HTTPError: HTTP Error 404: Not Found

Description

https://www.dailymotion.com/video/x7u7219

It's just for this video, other videos all work fine.

[PuppyPi]

I'm running version 2020.09.20 and the same exact thing happens for me for these browser-playable videos:

https://www.dailymotion.com/video/xklb33
https://www.dailymotion.com/video/xklcyv
https://www.dailymotion.com/video/xklgty
https://www.dailymotion.com/video/xklgur
https://www.dailymotion.com/video/xklgxj

(But most videos from that very channel downloaded fine!)