I have an Insta360 and some cheap Fifine webcam. Ages ago in the Insta360 config tool I added a plain blue background. I decided to get rid of it and see "reality" in the background. In the Insta360 tool the background has gone, but not in any OBS scene. Bizarrely the same background is on the Fifine camera also which leads me to believe this is some setting OBS has inherited. Neither camera has any filters showing or enabled. I have looked everywhere but cannot find any setting that seems relevant. Any help appreciated :-)