Video upscaler and Interpolator [RIFE VFI + Nvidia Video Super Resolution]

Turn your low-resolution, low-framerate videos into high-quality, high-FPS videos. **What’s Interpolation?** A method that adds extra frames between the original ones to make the video look smoother. It basically “fills in the gaps” between frames, so motion appears more fluid and less choppy. This workflow uses NVIDIA VSR, so it does not add extra detail to the base video. Instead, it preserves the original quality while upscaling without introducing pixelation. It uses RIFE VFI for interpolation. Tested with 1-minute-long videos targeting 1440p at 64 FPS on an NVIDIA RTX 4090. To install ComfyUI_NVIDIA_RTX_Nodes: 1. Update ComfyUI to the latest version. 2. Using ComfyUI Manager, search for the ComfyUI_NVIDIA_RTX_Nodes custom node and install it. COMFYUI SECURITY ERROR FIX If you hit a security level error while trying to install the ComfyUI_NVIDIA_RTX_Nodes custom node from ComfyUI manager: You need to temporarily change the security level in your config.ini file. If you are using the portable version, the file is located at: ComfyUI/user/__manager/config.ini Change the value to: security_level = weak IMPORTANT: Do NOT forget to restore it back to its original value. It is safe to temporarily lower the security level for this node since it comes directly from the ComfyUI team, but you should restore it afterward for safety reasons. Perform a hard restart of ComfyUI (completely stop it, then start it again). Install the custom node using ComfyUI manager and double-check that it is the official one. The link should point to: https://github.com/Comfy-Org/Nvidia_RTX_Nodes_ComfyUI Restart ComfyUI and check if the node works properly. If you encounter a dependency error, keep reading... Once everything is working properly, restore your original security level in the config.ini file and restart ComfyUI one final time. COMFYUI PORTABLE DEPENDENCY ERROR FIX If you hit a dependency error trying to run the Nvidia VSR node, try this: Create a backup of your embedded Python directory, in case you break something you can restore your embedded directory later using this backup. Then run the following command: python -m pip install -U --no-build-isolation nvidia-vfx --index-url https://pypi.nvidia.com Run the command in your embedded Python directory. For example: D:\ComfyUI\python_embeded. This command is designed for CMD. If you're using PowerShell, replace the initial python with .\python.exe. Detailed use instructions are contained within the workflow it self: - Yellow nodes are input and settings you can configure to suit your needs. - Red nodes are instructions and useful notes.