Periscope the live streaming app has now updated and allows users to use it in landscape mode,it was annoying using your device in portrait mode so now we can use it the right way,This will allow a better viewing field,in short you can allow more to be seen..So all you need to do is update the app and you can then tilt your device and shoot in landscape mode.
Periscope says
You asked, we delivered! In the latest version of iOS and Android, Periscopers can now hold their phones either in portrait or landscape. Here’s how it works: Viewers can continue holding their device in portrait, or match the broadcaster’s orientation to maintain full screen video. Either way, you’ll never need to tilt your head to watch sideways video.
Also added is “Mutual Follow” where when you start a private broadcast, you can choose from a list of mutual followers,Share context is another addition but only on iOS for now which means when someone you follow shares a broadcast, it appears in your home feed noted with an indicator.