FL DiffVSR

Diffusion-based video super-resolution nodes for ComfyUI powered by Stream-DiffVSR. Upscale videos 4x with temporal coherence for smooth, artifact-free results.

Features

• 4x Video Upscaling - Upscale video frames to 4x resolution with high fidelity
• Temporal Coherence - Maintains consistency across frames for flicker-free results
• Diffusion-Based - Leverages diffusion models for superior detail reconstruction
• Text Guidance - Optional prompt support for guided upscaling
• Memory Efficient - Chunked processing and xformers support for lower VRAM usage
• Automatic Downloads - Models download automatically from HuggingFace on first use

Nodes

Node	Description
FL DiffVSR Load Model	Downloads and loads Stream-DiffVSR model from HuggingFace
FL DiffVSR Upscale	Upscales video frames with temporal coherence

Installation

ComfyUI Manager

Search for "FL DiffVSR" and install.

Manual

cd ComfyUI/custom_nodes
git clone https://github.com/filliptm/ComfyUI-FL-DiffVSR.git
cd ComfyUI-FL-DiffVSR
pip install -r requirements.txt

Quick Start

1. Add FL DiffVSR Load Model node and configure precision/device settings
2. Connect to FL DiffVSR Upscale node
3. Feed your video frames as an IMAGE batch
4. Adjust inference steps (4 recommended for speed/quality balance)
5. Generate upscaled frames

Parameters

Model Loader

Parameter	Options	Description
precision	auto, fp32, fp16, bf16	Model precision (auto selects fp16 for GPU)
device	auto, cuda, cpu	Target device for inference
enable_xformers	true/false	Enable memory-efficient attention

Upscaler

Parameter	Default	Description
inference_steps	4	Denoising steps (higher = better quality, slower)
guidance_scale	0.0	CFG scale (0 = no guidance)
chunk_size	8	Frames per batch (lower = less VRAM)
prompt	""	Optional text guidance
negative_prompt	""	Optional negative prompt
seed	-1	Random seed (-1 for random)

Requirements

• Python 3.10+
• 8GB VRAM minimum (16GB+ recommended for larger videos)
• NVIDIA GPU recommended (CPU supported but slow)

Model

The Stream-DiffVSR model downloads automatically to ComfyUI/models/stream_diffvsr/ on first use (~2GB).

Model	Source	Size
Stream-DiffVSR	Jamichsu/Stream-DiffVSR	~2GB

License

Apache 2.0