You can now run a video to video workflow in High resolution from the first stage, I tested it for 2.5 MP on Nvidia RTX TI 12GB VRAM, and it works like a charm, split your generation into tiles and temporal windows while maintaining accurate animation transfer with no shifting or ghosting.
You can also use it for a second upscale stage, splitting a high resolution long video into manageable tiles and windows, to get the best quality you can squeeze from u/minimax.
Give it a try and let me know about your Feedback.
Important Note:
This was not tested nor recommended to do Fully Generated from first stage!
if you are going to fully generate something generate normally in stage 1 then use this node for stage 2 upscaling you result.
This node is mainly for Video to Video and Upscaling.