13014 – How to size your videos

For best results, your videos should be in the 16/9 format which is the universal format for most web videos.

This is what sites such as Youtube and Vimeo use

So when creating/exporting your videos we recommend your videos to be one of the following sizes:

1280 pixels by 720 pixels
960 pixels by 540 pixels
800 pixels by 450 pixels
640 pixels by 360 pixels