Video Interpolation and Upscaling to 4K with TensorRT for ComfyUI and RTX50 Series GPUs

Here is my tried and tested, and very FAST workflow for video interpolation and upscaling using ComfyUI.

NOTE: This will only work for nVidia "Blackwell" 50xx series GPUs.

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The flow is:

• Load input video

• First Interpolation (x2 Frames)

• Second Interpolation (x2 Frames)

• Upscale using TensorRT (loading from model)

• Resize by Longer Side to 4K

• Save output video

Usage notes:

If using Wan Video at native 16fps, using both interpolation nodes will get you to 64fps, good enough for 60fps approximation, but note that this will really stress your system RAM at the Upscale node if going full 4x on Upscaling. So for 60fps you really want to use only a 2x Upscaler and I recommend bypassing the second interpolation node and settling with 32fps if upscaling by 4x.

For resizing to 4K, set "3840" for landscape videos and "2160" for portrait or square videos.

Enjoy!