Enable MP4 Video Support on your Linux/Apache Server
In themes like Videozoom, where you can play self-hosted videos that you upload on your website/server, an additional step may be needed in order to able to play videos in MP4 or other format.
Instructions are very simple:
Find the .htaccess file on your server in the root folder of your website, and edit with a text editor and add the following lines at the end:
AddType video/ogg .ogv AddType video/mp4 .mp4 AddType video/webm .webm