Videos which I put into the description do not appear when viewing the activity.

This bug is similar to the recently reported and resolved image bug (thanks!) So what I now try is embedding a video using the method from videojs.com This way works for all other activities/resources which I have tried (e.g.: quiz, page), but in the checklist the video does not appear when viewing the page.

This I have put into the editor (HTML):

<center><video tabindex="0" id="my_video_1" class="video-js vjs-default-skin" controls="controls" preload="auto" data-setup="{}" height="500" width="666"> <source src="here_was_the_correct_link_to_the_video" type="video/mp4" /></video></center>

And this is (additionally) in the header of all my moodle pages:

<link href="http://vjs.zencdn.net/c/video-js.css" rel="stylesheet">
<script src="http://vjs.zencdn.net/c/video.js"></script>

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