Camera Culling Mask issue

Hello,

I have two cameras in my game, one for the background then the other camera is the main game camera which is basically centred onto the screen (see image below). The main game camera only covers the game. My problem is, as you can see from the image below that with my other depth camera the terrain still overlaps. I want the green hills to only appear when it enters the blue box not over the footage.

I have my culling mask for my background to only show the background, and the main game camera to cover everything else however this doesn't seem to work. The background camera is set to Skybox with a depth of 0 and the other camera which shows the game is set to depth only with a depth of 1.

Thank you for your time and help!

 

bump.

 

The position of the black boxes are correct, that's the area I don't want the hills to show at and I want to keep the footage at both sides of the game so clipping wouldn't solve this problem?

The image below I placed black boxes around the areas I want to keep in the camera's view. In those areas is where I don't want the hills appearing.

 

Yeah that's what I'm trying to achieve and I have set the terrain layer to the Game Camera yet it appears it still doesn't seem to work.

The Game Camera is the depth camera with a value of 1 which contains all the game content and the culling layer mask contains each game content layer. This camera has a size of 18.

The Main Camera only has the Video background in the culling layer mask and has a size of 20.

Just noticed I believe it's using the Game Camera as the Main Camera which is why it's going off. How would I set the Main Camera to be the default?

 

That seems to be working! Thank you!