I put {mp4}2016_visitflo_video{/mp4} in an article but there is nothing but a white screen.
The default file path in the plugin options is images/video, the video exists at images/video/2016_visitflo_video.mp4 or visitflo.com/images/video/2016_visitflo_video.mp4

Update: tried similar steps with .ogv, same result.

The installed version is the development version 4.8, since the video didn't work in 4.7 either. There is no error code, just a blank where the video should be. The only sign it's there is when you mouseover the right areas, "Joomlaworks AllVideo Player" shows up.

My site is visitflo.com and the article in question is at visitflo.com/index.php?option=com_content&view=article&id=689

I've looked at the html source of the article url and the relevant code looks like this:


<!-- JoomlaWorks "AllVideos" Plugin (v4.8.0) starts here -->

<div class="avPlayerWrapper avVideo">
<div class="avPlayerContainer">
<div id="AVPlayerID_0_1f8f864db5e8c85353e69cc878edecfa" class="avPlayerBlock">

<div id="avID_AVPlayerID_0_1f8f864db5e8c85353e69cc878edecfa" style="width:1280px;height:720px;" title="JoomlaWorks AllVideos Player"></div>
<script type="text/javascript">
jwplayer('avID_AVPlayerID_0_1f8f864db5e8c85353e69cc878edecfa').setup({
'file': '/images/video/2016_visitflo_video.mp4',
'image': '',
'height': '720',
'width': '1280',
'autostart': 'true',
'repeat': 'true',
'controls': '0'
});
</script>
</div>
</div>
</div>

<!-- JoomlaWorks "AllVideos" Plugin (v4.8.0) ends here -->

From the link I can see several issues (apart from the videos) which are caused by the incorrect loading of certain aspects over http instead of https.

There is also a JS error coming from your template.
Is the video behaving normally if you browse the site using the default template?