[MacTUG] Marginal/QLVideo: This package allows macOS Finder to display thumbnails, static QuickLook previews, cover art and metadata for most types of video files.

[Marlon A. Griffith]

"""
This package allows macOS Finder to display thumbnails, static previews, 
cover art and metadata for most types of video files.

QuickLook and Spotlight on macOS 10.9 and later understand a limited 
number of media files - mostly only MPEG audio and video codecs within 
MPEG container files. This package adds support for wide range of other 
codecs and "non-native" media file types, including .asf, .avi, .flv, 
.mkv, .rm, .webm, .wmf etc.

Installation

     Download the .pkg file of the latest release.
     Double-click on it.
     The Installer app will walk you through the installation process.
     To see thumbnails of video files you may need to relaunch Finder 
(ctrl-⌥-click on the Finder icon in the Dock and choose Relaunch) or log 
out and back in again.
     You may experience high CPU and disk usage for a few minutes after 
installation while Spotlight re-indexes all of your "non-native" audio 
and video files.

Alternatively, if you have Homebrew installed, you can install using 
Homebrew Cask:

brew cask install qlvideo

https://github.com/Marginal/QLVideo
"""