When using the videojs player with TimedMediaHandler; the MinimumVideoPlayerSize configuration setting doesn't do anything.
$wgTmhWebPlayer = 'videojs'; # commented out this to test Kaltura player $wgMinimumVideoPlayerSize = 200; # default value
Test video is 120 wide, and should open in popup. Tested in both Firefox and Chrome, with the same behavior.
PHP 7.2.24-0ubuntu0.18.04.1 (fpm-fcgi)