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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” effect to the layer. Then, you can “extract” the buffer you want.
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Extracting the environment light from an MXI
The “Channel” parameter allows you to select the buffer, and the “Light” parameter indicates the light buffer you want to use. Using the “Light” parameter only makes sense when you select “Light” or “Shadow” in the “Channel” parameter.
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Extracting light number 1 from the MXI
Channels available on the MXI files:
- Render channel.
- Light channels (If if Multilight was enabled).
- Alpha channel.
- Object ID channel.
- Material ID channel.
- Shadow channel.
- Motion channel.
- Roughness channel.
- Z-buffer channel.
- Fresnel channel.
Creating comps from
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an MXI footage
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 --> Create Maxwell MXI Comps”. That This action creates a folder in the project panel with the MXI footage name. Inside we can have 4 elements:
- A comp named “All layers” containing all the buffers that the MXI havehas.
- A folder named “Comps” containing all the buffers that the MXI have has separated.
- A comp named “Multilight” containing all the light buffers in “linear dodge” mode. Furthermore, the “Exposure” effect is applied to each light buffer to adjust the intensities easyeasily.
- A comp named “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 light buffers are blended in “linear dodge” mode