quelle: [Only registered and activated users can see links. Click Here To Register...]Quote:
You need to set a custom resolution in the OBS settings, for a 16:9.
Go to Settings->Video and set the Base Resolution to 'Custom' and 1920 1080. Then set an appropriate downscale from there down below in the downscale dropdown box. Hit OK, then after that set up your scene as usual, using the Preview and 'edit scene' to move stuff around and resize it as appropriate.
Personally, I'd do this and slide your 4:3 gameplay all the way to one side, allowing you to unify those black side-bars and put in a capture of your Twitch chat... viewers like seeing their chat on-stream, it can confirm if something isn't getting through, and so on. Also it allows you to put your webcam in there as well (if you have one), without covering any gameplay.
As a final note, it IS possible to disable the locked aspect ratio and squash/stretch your gameplay (hold SHIFT while rescaling from a corner of the selected composition layer). It will look like crap and is heavily discouraged as your viewers will not like it, but you can do it if you are dead-set (or just want to see how bad it would look).