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An interesting feature in Maxwell Render is the constant refinement approach of the render, which allows the post-production process to start while the render process is still going on, working in parallel and saving an extraordinary amount of time. You can load your MXI render or sequence at a poor level of quality (for example, at SL 4) and start the post-production process at this moment, while the render process keeps going on. When you want to update the footage in After Effects to the last sampling level saved, replace the footage with itself (right-click on the footage, and select "Replace “Replace Footage --> File...").

This allows the post-production and rendering process to work in parallel, creating a highly optimized workflow that saves a great amount of time.

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We can access all the MXI buffers using the MXI extractor. It is an effect plug-in, so first add your MXI footage into a comp, and then apply the "MXI Extractor" “MXI Extractor” effect to the layer. Then, you can "extract" “extract” the buffer you want.

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Extracting the environment light from a MXI

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The “Channel” parameter allows you to select the buffer, and the "Light" “Light” parameter indicates the light buffer you want to use. Using the "Light" “Light” parameter only makes sense when you select "Light" or "Shadow" “Light” or “Shadow” in the "Channel" “Channel” parameter.


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Extracting the light 1 from a MXI
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Channels available on the MXI files:

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The easy way to work with all the buffers is creating a folder containing all the data. Select the MXI footage in the project panel, and go to "File “File --> Create Maxwell MXI Comps"Comps”. That action creates a folder in the project panel with the MXI footage name. Inside we can have 4 elements:

  • A comp named "All layers" “All layers” containing all the buffers that the MXI have.
  • A folder named "Comps" “Comps” containing all the buffers that the MXI have separated.
  • A comp named "Multilight" “Multilight” containing all the light buffers in "linear dodge" “linear dodge” mode. Furthermore, the "Exposure" “Exposure” effect is applied to each light buffer to adjust the intensities easy.
  • A comp named "Multishadow" “Multishadow” containing all the shadow buffers.


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Multilight comp. Note that the layers are blended in "linear dodge" mode
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_Multilight comp. Note that the layers are blended in "linear dodge" mode_
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