Support Multi-threaded rendering #1
Description
Pyramid can render any arbitrary frame at any time. It is a bit of a waste of potential to then force the renderer to render every frame in order. We could probably implement something much more efficient that could render multiple frames in parallel.
The only problem is that, a writer like FFMPEGWriter, as far as I know, requires the frames to be piped in order...
So we will need to implement some sort of Queue-system from the renderer to the writer to ensure they are piped in the correct order.