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# CMProjectionType

Constants describing the projection surface information in a 3D video buffer or channel.

```
enum CMProjectionType
```

## Topics

### Projection Surfaces

[`CMProjectionType.rectangular`](/documentation/CoreMedia/CMProjectionType/rectangular)

Video content displays on a flat, rectangular 2D surface.

[`CMProjectionType.equirectangular`](/documentation/CoreMedia/CMProjectionType/equirectangular)

Video content displays as a 360 degree equirectangular projection.

[`CMProjectionType.halfEquirectangular`](/documentation/CoreMedia/CMProjectionType/halfEquirectangular)

Video content displays as a 180 degree equirectangular projection.

[`CMProjectionType.fisheye`](/documentation/CoreMedia/CMProjectionType/fisheye)

Video content displays as a fisheye projection.


---

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