support for instagram reels

[jdimpson]

Checklist

• [ x] I'm reporting a feature request
• [x ] I've verified that I'm running youtube-dl version 2020.07.28
• [x ] I've searched the bugtracker for similar feature requests including closed ones

Description

When i attempt to download an instagram reel (tik tok knockoff), youtube-dl uses the generic parser, which fails (first failing HEAD command, then failing generic extractor)

Since this new "feature' seems to be more of a UI/UX change, I'm hopeful that the only thing youtube-dl needs are some minor changes to invoke the instagram extractor on URLs that have '/reel/' in them.

Example reel: https://www.instagram.com/reel/CDUMkliABpa/

[basicmaster]

Until the merge request is merged, you might want to just replace reel by p in the URL to download the video anyway.

[omps]

nice hack works ;)