I have a scene in which I want to reduce noise/fireflies by the method illustrated here, i.e. rendering twice (or in my case 4 times, but the theory is the same) with lower sample count but different seed and combining the results with blending mode "Darken".
My scene is an animation with ~500 frames so rendering it twice would result in a lot higher used storage. What I'd like to do is tell blender
- render frame 1 with render seed 1
- render frame 1 with render seed 2
- combine those two frames to one using darken
- combine my compositing nodes to the result of step 3
- output that as one file
- repeat for every other frame
it doesn't matter for me if steps 1 and 2 are done at the same time (if that's even possible) or not as I assume the total duration would be the same. Preferably this should work without python scripts since I plan on using a render farm which doesn't support those.
How can I do this?
Blender version used is 3.3.1 but if there's a solution that requires 3.4 updating would be no problem.