Free ComfyUI Workflow: AI Video Upscaler with RealESRGAN

Transform your low-resolution videos into crisp, high-definition masterpieces with this powerful and easy-to-use ComfyUI video upscaler workflow. Leveraging the state-of-the-art RealESRGAN model, this pipeline is designed to intelligently enhance and enlarge your video files, adding incredible detail and clarity frame by frame.

Whether you're looking to restore old family footage, improve the quality of a grainy download, or prepare a video for a 4K display, this workflow provides a complete, automated solution. Stop settling for pixelated video and unlock the true potential of your clips.

How Does AI Video Upscaling Work?

Unlike traditional upscaling that simply stretches pixels, this AI-powered workflow takes a more intelligent approach. The entire process is broken down into three key stages:

1. Deconstruction: The workflow first loads your video and breaks it down into its individual image frames.
2. AI Enhancement (RealESRGAN): Each individual frame is then processed by the RealESRGAN model. This powerful AI doesn't just make the image bigger; it analyzes the content and intelligently reconstructs missing details, sharpens edges, and reduces noise.
3. Reconstruction: Once every frame has been upscaled and enhanced, the workflow seamlessly stitches them back together into a new, high-resolution video file, complete with the original audio.

A Simple Guide to Using the RealESRGAN Video Upscaler

This workflow is designed for simplicity. Get stunning results in just a few steps.

Step 1: Load Your VideoBegin by using the "Load Video" node to select the video file you wish to enhance from your computer.

Step 2: Queue Your Prompt

Once your video is loaded, simply click "Queue Prompt." The workflow is pre-configured to handle the rest.

Step 3: Be Patient and Monitor Progress

This is the most important step. AI video processing is an intensive task. The workflow is enhancing hundreds or even thousands of individual images. This will take a significant amount of time, especially for longer videos or users with less powerful GPUs.

You can monitor the progress by watching the green execution box move from node to node or by checking the command-line console (the log), which will show you which frame is currently being processed.

Step 4: Find Your Upscaled Video

Once the process is complete, your new, high-quality video will be saved in your ComfyUI output folder.

Who is This Workflow For?

• Video Editors: Upscale archival footage or low-quality clips to match the resolution of your high-definition projects.
• AI Artists: Enhance the quality of AI-generated animations (e.g., from AnimateDiff) to give them a professional, polished look.
• Hobbyists & Archivists: Breathe new life into old home movies or digitized VHS tapes by restoring detail and clarity.
• Content Creators: Improve the visual quality of mobile phone footage or screen recordings before publishing.

Frequently Asked Questions (FAQ)

Why is the process so slow? Video upscaling is essentially performing a complex image enhancement task on every single frame of your video. A 30-second video at 30 frames per second has 900 frames to process. The time required depends heavily on your video's length, resolution, and your GPU's power.

What custom nodes are required? This type of workflow typically relies on a video helper suite to load and combine frames. The ComfyUI-VideoHelperSuite (VHS) is a common requirement for video processing nodes.

Can I change the upscale factor from 2x? Absolutely. While this workflow is pre-set for a 2x upscale, you can swap out the RealESRGAN model for a 4x version (e.g., RealESRGAN_x4plus.pth or RealESRGAN_x4plus_anime_6B.pth) to achieve an even larger resolution increase.

Download Your Free AI Video Enhancer

Stop letting poor quality hold your videos back. Download this free ComfyUI workflow and start upscaling your content to the stunning high-definition standard it deserves.

[Download the RealESRGAN Video Upscaler Workflow Now]