WHEN DO I USE THIS TEMPLATE?
You use this template when you have an upright video that you want to play on your portrait screen. An upright video is a video which is longer in height than in width when you play it on your computer. If you have a video that is showed turned to the left on your computer, you need to use a different template. Read more about this here.
HOW CAN I CREATE THIS TEMPLATE?
Read more about creating a template here.