To restore animated thumbnail previews, requires inline previews to be disabled in your YouTube settings. Note: not Greasemonkey compatible. v2.0 adds fallback option of a still image carousel for the homepage where YouTube has changed their data structure to no longer provide an_webp animated thumbnail urls, which is affecting some users; for such users non-homepage pages are unaffected and continue to use the an_webp animated thumbs.
To restore animated thumbnail previews (when hovering over a video tile when browsing etc). Requires inline previews (i.e. the video player previews) to be disabled in your YouTube settings.
Note: not Greasemonkey compatible. Recommendation is to use Violentmonkey.
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