Activate this to resume or allow resuming of a render that was previously started, but killed or crashed. This generally only applies for disk renders, and only when rendering to a specific file location.
You can include (merge the contents of) any .ass file by putting the file path here.
This indicates when to merge the .ass file contents. This can occur right when scene translation starts, or after lights and cameras have already been created.
When disabling motion blur with ignore_motion_blur, the time specified by reference_time will be used instead of the shutter open time. This time is mapped on [0,1] with 0 being shutter open and 1 the shutter closed.