[Imgur] Unable to extract width, height.

[ghost]

• I've verified and I assure that I'm running youtube-dl 2016.08.12

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$ y -v 'https://i.imgur.com/A61SaA1.gifv'
[debug] System config: []
[debug] User config: ['-4', '-f', 'best', '--prefer-free-formats', '--no-cache-dir', '--no-mtime', '--youtube-skip-dash-manifest']
[debug] Command-line args: ['-v', 'https://i.imgur.com/A61SaA1.gifv']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2016.08.12
[debug] Python version 3.5.2+ - Linux-4.7.0-rc7-686-i686-with-debian-stretch-sid
[debug] exe versions: ffmpeg 3.1.2, ffprobe 3.1.2, rtmpdump 2.4
[debug] Proxy map: {}
[Imgur] A61SaA1: Downloading webpage
WARNING: unable to extract width; 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.
WARNING: unable to extract height; 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.
[debug] Invoking downloader on 'https://i.imgur.com/A61SaA1.mp4'

https://i.imgur.com/A61SaA1.gifv