BananaSplit.py is a Python 3 script for rendering After Effects compositions in automagically compressed chunks.
Both After Effects (obviously) and ffmpeg must be installed.
Additionally, ffmpeg.exe (found in FFmpeg's /bin folder) and aerender.exe (found in After Effect's install location with AfterFX.exe) must also be added to the system's shell path for the script to work properly.
Tutorial on Modifying Windows' Shell Path
Tutorial on Modifying OS X's Shell Path
BananaSplit should work on all Windows systems (tested) and OS X systems (untested) that After Effects can be installed on.
First off, check to see if you have a fragmentList.bak from a previous render. If the project's basic properties have remained unchanged, using that may work.
Otherwise, reconstructing a fragmentList.txt is easy, and follows FFmpeg's concatenation file syntax. See here for more information.