iOS video app previews and formatting

Crazybreadman

I came across this post about app previews as I was doing research and found step 5 (formatting) very helpful as it has good tips and a link for a tool which helps format your same video into all needed aspect ratios without being rejected by Apple for stretching pixels. Hope this helps someone!
http://thenextweb.com/insider/2015/11/15/6-tips-for-creating-the-perfect-apple-app-store-video-for-your-app/#gref

Also if you have tips on iOS app previews post them here to help everyone out!