DaSiWa Custom Nodes Collection

A high-performance collection of custom nodes for ComfyUI, optimized for video workflows, resolution management, and logic control.

Included Nodes

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💎 RTX Upscaler & Refiner

State-of-the-art image and video enhancement using NVIDIA RTX Video SDK. It executes up to three sequential passes (Denoise, Deblur, and Upscale) in a single node, processing frame-by-frame to keep VRAM usage predictable and low.

• Refine: Independent Denoise and Deblur passes.
• Upscale: AI-powered VSR and High Bitrate upscaling.
• Smart Sizing: Multiple resize modes including Constant Megapixel targets.
• Efficiency: Frame-by-frame processing for minimal VRAM usage.

Full documentation →

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📐 Resolution Scale Calculator

The DaSiWa Scale Calculator provides mathematically precise resolution management for high-performance video models. It uses a Constant-Area Square-Root method to ensure that your GPU VRAM usage remains stable regardless of the aspect ratio.

• Unified Resolution Presets: Pick standard p targets from 144p to 2160p/4K or optimized megapixel tiers from one dropdown.
• Clear Aspect Modes: IMAGE ASPECT uses the connected image shape; USE ASPECT BELOW uses the always-visible aspect controls.
• Video-Safe Snapping: Standard, Div32, Div64, and custom divisor modes keep dimensions aligned for different model families.

Full documentation →

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🎛️ Node Status Switch

The DaSiWa Node Status Switch lets you mute or bypass any node in your workflow using a single toggle. Targets are registered by wiring their outputs into the switch's input slots, which grow dynamically as you connect more nodes (up to 99).

Full documentation →

Quick start:

1. Add a DaSiWa Node Status Switch to your workflow
2. Drag any output from the node(s) you want to control into the switch's target_01 input — new slots appear as you connect more
3. Set action to mute or bypass and configure trigger_on to taste
4. Toggle enabled directly on the switch

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🎬 LTX-2 Lora Loader

The DaSiWa LTX-2 Lora Loader is a 10-slot LoRA stacker designed for LTX-2.3 video generation. LTX-2.3 is unique because it generates both video and audio from separate transformer branches. This node gives you independent control over how LoRAs affect video vs. audio.

• Dual-Branch Control: Adjust video (V×) and audio (A×) multipliers independently per LoRA.
• 10 LoRA Slots: Stack up to 10 LoRAs with fine-grained strength control (STR: −2.0 to +2.0).
• Key Count Indicator: Auto-scans each LoRA to show video/audio key counts before generation.
• 6 Themes: Switch between Jade, Neon, Studio, Chrome, OLED, and Wood color schemes.
• Searchable UI: Quick LoRA search with live filtering in the node itself.

Full documentation →

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💾 Metadata Image Saver (Civitai Ready)

The DaSiWa Metadata Image Saver ensures your images are fully compatible with Civitai, Hugging Face, and other galleries by embedding A1111-style metadata. It automatically detects LoRAs used in the workflow and supports dynamic filenames.

• Civitai Compatibility: Writes the standard parameters block for auto-parsing of prompts and resources.
• LoRA Detection: Scans your workflow and appends <lora:name:weight> triggers automatically.
• WebP Support: Full "Drag-and-Drop" workflow reconstruction support for both PNG and WebP formats.
• Dynamic Filenames: Use placeholders like %seed%, %date%, %model%, %width%, and %height%.
• Privacy: Toggle workflow JSON embedding to share images without exposing your full graph.

Full documentation →

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🎬 Watermark Overlay

A professional-grade watermark tool optimized for image and video batches. It uses a stable CPU compositor with high-quality resampling and precise rotation.

• Dynamic Random Positioning: Toggle seeded corner cycling while keeping the selected position as the start position.
• Splash Mode: Configure dynamic fade-in and fade-out at the start and end of clips for professional branding.
• Optical Padding: Automatically adjusts placement by the watermark's visual center of mass for perfect alignment.
• Stable Compositing: Output frames are initialized from the source batch before the watermark region is blended, avoiding flicker and black-frame artifacts.

Full documentation →

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🔀 Random String Picker

Bridge any string/text node through DaSiWa Random String Picker to randomize prompt variants inline.

• Text passthrough: Accepts a connected STRING input and returns a STRING output.
• Inline variants: Replaces every {A|B|C} segment with one randomly selected option.
• Multiple groups: Processes any number of groups independently, such as {red|blue} car in {sun|rain}.
• Literal passthrough: Text outside complete {...} groups is left unchanged.

Full documentation →

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🧠 LLM / VLM Analyze

The DaSiWa LLM / VLM nodes let you run local transformers chat or vision-language models from inside a ComfyUI workflow. They accept native STRING inputs and native IMAGE batches from nodes such as Load Image or VHS frame loaders.

• Native ComfyUI Inputs: Analyze connected text, still images, or video/image-sequence frame batches.
• Prompt Presets: Custom system instructions, LTX-2.3/Wan2.2 video prompt enhancement, and image/video caption presets for mixed tags, tag-only, or natural language.
• Memory Modes: Keep models cached for speed, unload after each response, or use the Analyze node cleanup switch to free RAM/VRAM before later steps.
• Frame Sampling: Limit video analysis with max frames, stride, frame strategy, resize controls, context limits, and optional KV-cache reduction.
• Local or HF Models: Load full model folders from ComfyUI/models/llm, or download a Hugging Face repo id into that folder when missing.

Full documentation →

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🛠️ Installation

Manual install

1. Activate your venv inside your ComfyUI folder
2. Clone this repo into your custom_nodes folder:

   git clone https://github.com/darksidewalker/ComfyUI-DaSiWa-Nodes

3. Install all dependencies:

   pip install -r requirements.txt

4. Requirement: NVIDIA RTX GPU with drivers 530+. (Windows users may need the NVIDIA Broadcast SDK; Linux usually works out-of-the-box with the pip package).
5. Restart ComfyUI.

Use ComfyUI-Manager

Search for DaSiWa-Nodes and install.

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Credits

• The RTX implementation in this collection is based on the excellent work by Deno2026/comfyui-deno-custom-nodes.
• Lora-Loader is based on Brojakhoeman/Loradaddyloaderltx.
• Ideas for Watermark Overlay are inspired by Artificial-Sweetener/comfyui-WhiteRabbit