Multiprocessing in BG Renderer Max

BG Renderer Max gives you the power of true multiprocessing by launching multiple aerender instances simultaneously – as you could do by manually launching BGRenderer multiple times before.

The key difference now is control. You can see the actual progress for each composition no matter how much processes run at the same time.

Multiprocessing works by rendering to the frame sequence and compiling the video file in the end.
First, you need to check Multiprocessing in Render Settings
Render Process counter appears near the main button. Set the number of render threads you want your machine to handle simultaneously.
Multiprocessing
Select the desired format to render the sequence to:
Sequence Format
BG Renderer Max supports PNG/JPG/TIFF image sequence formats, and do not support PSD/EXR. TIFF is the default format.
If your render queue output modules set in anything other than PNG/JPG/TIFF, BG Renderer Max automatically changes them to JPG.

Compiling video out of sequence

Read more about Compiling Sequence to Video.
In short, it just exports the video file.

Render Versioning

Every time you render with multiprocessing, BG Renderer Max creates a new folder for the sequence, thus keeping all the previous renders.
Versioning allows you to go back to the previous versions quickly.
To turn versioning off, uncheck Save sequence versions.
When you do so, BG Renderer Max would always render to the set folder with "Skip Existing Frames" turned on, so you may use it for the network rendering.

Limitations

It's important to understand that After Effects rendering capacity is mostly limited by your machine' RAM, not processor cores.
This is why we do not recommend setting the render threads count too high. For easy renders you may set it to the number of cores minus one, for heavier ones – don't exceed half of your core count.