Whiteknight/mediawiki-embedvideo — pull request #36 by sash-kan (2014-01-15 08:22:44+00:00)
Title: Update EmbedVideo.Services.php

added "youtubeimg".
convenient for pages with lots of videos: instead of the iframe is loaded only screenshot.
the sample page, where this patch works: http://ruxpert.ru/Музыка_и_песни_о_России