SWF file!

No video with supported format and MME type found. Screenshot from 2016-01-22 15:22:39

Error Here's the error

Please help us reproduce the problem by writing all the details we need to recreate it. What's the page content?

I already inserted swf to Allowed fallback types but nothings happen. I put it through media, then i inserted it to the content. Then, the error just appear.

Is there other way to fix that? Thanks @flavicopes

AFAIK the SWF file cannot be just inserted in the page and it works. You need to wrap it in an object, with the full path of the swf (check it's accessible via page route):

<object>
    <embed src="/grav/your-page-slug/Car.swf" width="100%" height="100%"></embed>
</object>

As flavioscopes said, you have to embed the file in the page. SWF files need to run that way, the easiest way is still to use SWFObject to get it done. https://code.google.com/p/swfobject/
Then just check the examples to get the code right.
https://code.google.com/p/swfobject/wiki/documentation

But this would work as long as you include the js file ( http://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js )

<script type="text/javascript"> 
            var flashvars = { };
            var params = {
                wmode: "opaque",
                quality: "high",
        bgcolor: "666633"
            };
            swfobject.embedSWF("path/to/file.swf", "flashCar", "100%", "100%", "8", "/media/utils/expressInstall.swf",flashvars,params);
        </script>
<div id="flashCar">
   <!-- alt content -->
</div>