Question / Help Little problem

[Nufrevi]

On Twitch

How to change this ?

 

[Fenrir]

Black bars on your stream or recording? Read http://www.helping-squad.com/how-to-select-the-correct-aspect-ratio-for-your-recordingstream/ and http://www.helping-squad.com/how-to-do-a-169-stream-with-any-size-of-video-input/