Starting with version 2020.08.20, ViewTube supports YouTube's default layout only, for both desktop (www.youtube.com) and mobile (m.youtube.com) versions.

For the old layout (the user-agent workaround) use this version of the script:
http://sebaro.pro/viewtube/files/viewtube-old-youtube.user.js

Please consider using a free license for the Javascript on your website.

[Message generated by LibreJS. See https://www.gnu.org/software/librejs/ for more information]

URL = https://vimeo.com/ondemand/shibarimarathon1/337584665?autoplay=1

results in error message:
"Couldn't get the player element."

Youtube working elsewhere, blocked/fails when attempting to view via Tor-enabled browser.

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