Renamed to bellroy/elm-embed-youtube. It is published under that name, and new versions come out there.
Versions published as tricycle/elm-embed-youtube still install under that name. 3 versions of 6 come from the new location (see their notes). 3 versions could not be recovered and cannot be installed.
Rerouted (cache, verified). The original is gone. This copy comes from a Lamdera package cache made before it went. The Lamdera package server serves a copy recovered from a Lamdera package cache from 2021-02-13.
What we checked: Rebuilt from the unpacked sources in a Lamdera package cache (5 copies agree), which Elm only writes after the published SHA-1 checked out; elm.json is byte-identical to package.elm-lang.org's; the exposed modules match docs.json; the zip is our own, so its SHA-1 is not the published one.
The Lamdera compiler uses this copy and prints a one-line notice saying so. elm itself fails to download this version.
Details · package.elm-lang.org's zip: https://github.com/tricycle/elm-embed-youtube/zipball/1.1.3/
Player Background Thumbnail (480x360):
PlayerBackground

Video frames thumbnails (120x90)
First | Second | Third

Lowest quality thumbnail (120x90)
LowQuality

Medium quality thumbnail (320x180)
MediumQuality

High quality thumbnail (480x360)
HighQuality

Standard quality thumbnail (640x480)
StandardQuality

Unscaled thumbnail resolution
MaximumQuality

Grab a thumbnail from your Youtube video