The Master Mixer window is the place where mixing or compositing of the image sources occur. This window has two parts:
- On the left side, you will see the following text: "First layer or output if no mixer selected" and a vertical list of buttons corresponding to all currently available image layers - if any exist. These selector buttons allow you to choose one item at a time to be visible if no Mixing or Compositing module is active. If a Mixer Module is active, this selector will allow you to choose the first channel that will be mixed/composited.
- On the right side, you see the Mixer Module Container. Here you can add, remove and rearrange mixer modules, as described in the Module Containers section.
It is possible to apply an EffectChain to the final output of the Master Mixer. To enable (or disable) this, Click the "fxchain on" button until it is highlighted and select the desired EffectChain from the adjacent drop down menu. As explained by the Master Mixer Rendering Chain diagram, this EffectChain will be rendered after the Mixer Modules. In other words, all mixing and compositing happens first and then effects are applied.
Note: the Master Mixer also serves as a Syphon Server, meaning that frames coming from the Main Output window can be transmitted to other Syphon-aware applications ("clients").