Board Thread:Support Requests - Getting Technical/@comment-4962933-20140818075119/@comment-31955138-20180422134717

Special:Upload supports .ogv  videos. However I would recomend uploading the video to youtube if possible for the following reasons:
 * They are limited to 10 MB which is around 1 minuet  at VGA quality
 * They do not work in Safari, Internet Explorer any major mobile browser (except UC which is popular in China) and current versions of Microsoft Edge.
 * They do not display a preveiw, just a bar with a play button on it