[Error] No duration when downloading from periscope

[NewCTwo]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2019.02.08. 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 Issues with outdated version will be rejected.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 2019.02.08

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• Searched the bugtracker for similar issues including closed ones
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So my issue is pretty simple: The duration tag returns NA when I try to download a periscope stream.

Output:

me@me:~$ youtube-dl -v -s -i --get-filename -o '%(title)s_%(resolution)s_%(duration)s.%(ext)s'  https://www.pscp.tv/w/1rmxPQmPmVbKN?q=boxing
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'-s', u'-i', u'--get-filename', u'-o', u'%(title)s_%(resolution)s_%(duration)s.%(ext)s', u'https://www.pscp.tv/w/1rmxPQmPmVbKN?q=boxing']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.02.08
[debug] Python version 2.7.15rc1 (CPython) - Linux-4.15.0-45-generic-x86_64-with-Ubuntu-18.04-bionic
[debug] exe versions: ffmpeg 3.4.4, ffprobe 3.4.4
[debug] Proxy map: {}
[debug] Default format spec: bestvideo+bestaudio/best
Brian P. Hickey - Grays Ferry Boxing Club_NA_NA.mp4

[dstftw]

No duration is provided as metadata.

[NewCTwo]

How do I get that metadata into the output?

[dstftw]

You can't. I've already pointed out it does not exist.

[NewCTwo]

It exists on the website:

Should this be a feature request?

[dstftw]

So what? Again: it's not provided as metadata. Download the video and extract duration with ffmpeg.