I made a simple macro containing a standard HTML5 video player...

When I insert the macro in my RTE it renders this code - as expected

<div class="umb-macro-holder Xstream-video mceNonEditable umb-macro-mce_4">
    <!-- <?UMBRACO_MACRO macroAlias="Xstream-video" videoId="34881" /> -->
    <ins>
        <div id="video-container">
            <video id="videoplayer" class="video-js vjs-default-skin borderbox center-block" controls="controls" autoplay="autoplay" preload="none" poster="xxxx" data-setup="{}">
                <source src="xxxx" type="video/mp4" />
            </video>
        </div>
    </ins>
</div>

After I hit 'Save and Publish' my macro gets stripped to the bone and renders this - (the video are displayed perfectly on the front page however):

<!--?UMBRACO_MACRO macroAlias="Xstream-video" videoId="34881" /-->

I've added this to validElements in my tinyMceConfig.config:

,video[*],source[*]

And this to umbracoSettings.config

<TidyEditorContent>False</TidyEditorContent>

How can I make the macro render in my RTE - Am I missing something...?

I use Umbraco version 7.1.6 assembly: 1.0.5350.25714 by the way...