An extension for MacOS' "QuickLook" which allows .webm movies to be played in the Finder and Spotlight previews like any other movies.
To install, launch "Webm Quicklook.app" once, seeing the sample video indicates success. You can close the app. Keep the app somewhere: the way QuickLook extensions function today is by fetching the plug-in each time from the app, this is Apple's rule, and it is so to ensure that mac plugin also go through Apple's app security review. If you move it, launch it again.
To uninstall, delete the app.
Download from Releases.
Latest working universal binary: version 1.feb27 Notarized and gatekeeper-approved.
Any suggestion, comment, constructive or destructive critics, are welcome.