Square Video Wins at Facebook

What shape of video should I use to advertise on Facebook?

The wise people at Buffer Social did research, and found that square videos outperformed landscape videos in engagement, views, and reach. 

For a video girl, this is hard to take.  I want widescreen!

Fortunately, widescreen is still good on YouTube.

For best engagement, here is what Facebook likes - square video.

But please, don't shoot video on your cell phone in portrait, like this!  It looks terrible, and cuts the action off!  It's bad enough the camera runs all over the place to begin with.  Let the audience see what is going on!