AI guides / questions / glossary
How does AI
do that?
Recreate an AI effect, choose a workflow, or understand a term. Practical steps and clear explanations, with the sources and limitations alongside them.
Start with character swapsAI inference
01 Featured workflow
AI video / character replacement
How to make AI character-swap videos
A movement clip, a character image and the edit that creates the switch. Follow the free browser route, set up the local graph, or compare paid hosted options.
Open the complete guide
Choose your next workflow
All guides →Build your first ComfyUI workflow
Follow the official purple-bottle recipe, inspect genuine publisher screenshots, and save an image with its reusable workflow.
How do I keep the same AI character across images?
Build a reference-editing baseline, change one scene at a time, and inspect identity before exporting. Local Qwen and paid Midjourney routes.
How to use a LoRA in ComfyUI
Match the adaptation to the base model, connect MODEL and CLIP correctly, then compare and export.
Why are details in my AI image prompt ignored?
Identify the missed requirement, distinguish wording from references and masks, then repair one region with free local inpainting or hosted editing.
02 Questions & explanations
Before you press Run
All questions →Can my PC run local AI?
Check the exact model, runtime, available memory and intended job. There is no single RAM or GPU number that makes every local AI model practical.
Why are ComfyUI nodes missing?
A workflow names node types that your current installation cannot load. Missing code, failed imports and missing model files need different fixes.
What do Q4, Q8, FP16 and GGUF mean?
Q4, Q8 and FP16 describe numerical representations; GGUF describes a model-file format. Neither label alone tells you quality, compatibility or total memory.
Why does my local AI model run slowly?
Separate model loading, input processing and output generation, then check placement and workload size before changing settings.
Decode the terminology
Glossary →What is AI inference?
Inference is running a trained AI model on an input to produce an output. It is the computation that happens when you ask a model a question or generate an image.
Quantisation
Quantisation represents model numbers with lower precision to reduce storage or memory requirements, with possible changes to output quality.
Workflow
A workflow is a connected set of processing steps, their settings and inputs. In ComfyUI it is a node graph that can be saved and shared.
Sources, steps
and actual limits.
Definitions explain the idea and show where it matters. Guides show the inputs, dependencies and route choices. If a workflow has not been run through generation, we say so.
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