unable to extract OpenGraph description

[unni104]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2018.07.10. If it's not, read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2018.07.10

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If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

youtube-dl --restrict-filenames --verbose http://www.dailymotion.com/embed/video/k15VG8VBLBJGhirmSxU
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--restrict-filenames', '--verbose', 'http://www.dailymotion.com/embed/video/k15VG8VBLBJGhirmSxU']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.07.10
[debug] Python version 3.6.6 (CPython) - Linux-4.17.5-1-ARCH-x86_64-with-arch
[debug] exe versions: ffmpeg 4.0.1, ffprobe 4.0.1, rtmpdump 2.4
[debug] Proxy map: {}
[dailymotion] k15VG8VBLBJGhirmSxU: Downloading webpage
WARNING: unable to extract OpenGraph description; 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.
[dailymotion] k15VG8VBLBJGhirmSxU: Downloading m3u8 information
[dailymotion] k15VG8VBLBJGhirmSxU: Downloading m3u8 information
[dailymotion] k15VG8VBLBJGhirmSxU: Downloading m3u8 information
[dailymotion] k15VG8VBLBJGhirmSxU: Downloading m3u8 information
[dailymotion] k15VG8VBLBJGhirmSxU: Downloading m3u8 information
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on 'https://www.dailymotion.com/cdn/H264-848x480/video/x6orzta.mp4?auth=1531753224-2562-c58gum1s-825ed91fd3f34d931fc1842dad29cbef'
[download] Destination: vidasopostas84-k15VG8VBLBJGhirmSxU.mp4
[download]   0.2% of 242.23MiB at 387.81KiB/s ETA 10:38

...
<end of log>

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Description of your issue, suggested solution and other information

While downloading a Dailymotion video I get the following error:

WARNING: unable to extract OpenGraph description; 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.

The video then downloads normally. As requested by the warning I'm filing the bug report here.

[bato3]

No meta-og tags in code, instead:
<meta name="description" content="This video is private." />