Upscale Videos or Images to 4K with ComfyUI SeedVR2 VideoUpscaler Step-by-Step Guide(GGUF Latest)

#aiimages #comfy #comfyui #videoediting #4k
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Latest update(20251108)
Please update the SeedVR2 node to the latest version V2.5; no need to use the nightly version anymore. Breaking change to the old one. I will make a new video guide for it.
https://github.com/numz/ComfyUI-SeedV...

Upscale Your Old Videos & Images to Stunning 4K FOR FREE!

Do you have precious family memories trapped on blurry, low-resolution video tapes or old digital files? A professional restoration can cost a fortune, but today, Faboro shows you the powerful, free, and open-source solution: the ComfyUI SeedVR2 VideoUpscaler from ByteDance!

In this step-by-step guide, we'll show you how to use our custom, ready-to-use ComfyUI workflow to seamlessly restore and upscale any video or image to incredible HD, 2K, or 4K quality. Say goodbye to artifacts and hello to crystal-clear detail!

🚀 What You Will Master in This Tutorial:

The SeedVR2 Core: Learn the difference between the high-quality 7b FP16 and the low-VRAM 3b FP8/GGUF models to choose the best option for your PC (works great even on low-spec GPUs!).

VRAM Optimization Secrets: Master advanced techniques like Block Swap and VAE Tile Processing to prevent Out-of-Memory (OOM) errors and run 4K upscales on consumer hardware.

The Batch Size Formula: Understand the crucial 4n + 1 batch size rule and how to set a minimum of 5 to avoid broken frames and artifacts.

Frame Interpolation: Enable this group to smoothly increase your video's frame rate (e.g., to 24FPS) for a modern, fluid look.

Handling Long Videos: We show you the simple command to increase the 100MB upload limit for large video files.

Image Upscaling: Convert the workflow into an image upscaler to boost your photos to 4K with impressive results.


Whether you're running ComfyUI locally or using our free, zero-setup Cloud Computer option, we provide all the files and links below to get you started immediately. Preserve those sweet memories in glorious 4K today!

Resources and Links
Latest update(20251108)
Please update the SeedVR2 node to the latest version V2.5; no need to use the nightly version anymore.
https://github.com/numz/ComfyUI-SeedV...

Video Upscale Workflow and AI App(Cloud Computer Version):
https://www.runninghub.ai/post/196451...
Image Upscale Workflow and AI App(Cloud Computer Version):
https://www.runninghub.ai/post/197305...

Local Version:
https://civitai.com/models/2024056?mo...

Models used in the video:

Base model: goes to ComfyUI/models/SEEDVR2 folder
https://huggingface.co/numz/SeedVR2_c...

GGUF: goes to ComfyUI/models/SEEDVR2 folder
https://huggingface.co/cmeka/SeedVR2-...

Custom nodes:
https://github.com/numz/ComfyUI-SeedV...

Optional fp8 base model(the old fp8 has some quality issues):
https://huggingface.co/AInVFX/SeedVR2...

Resource monitoring node:
https://github.com/crystian/ComfyUI-C...

ComfyUI installation guide:
https://comfyui-wiki.com/en/install/i...

Command to change the node version to nightly.
git fetch --all
git switch nightly

Extra argument added to the starting command of ComfyUI
--max-upload-size 500



Video Timeline:
00:00 - Introduction and Latest Update
01:52 - Workflow Explanation For Video Upscaling
04:37 - GGUF and Extra args set up Nightly Version
15:14 - Video Upscale Examples
21:05 - Workflow Explanation For Image Upscaling
21:51 - Image Upscale Examples