> ## Documentation Index
> Fetch the complete documentation index at: https://dripart-context-windows.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Context Windows (Manual) - ComfyUI Built-in Node Documentation

> Context Windows (Manual) node provides manual context window control, implementing sliding window sampling techniques to process long sequence generation tasks while efficiently managing memory usage with multiple scheduling strategies.

The `Context Windows (Manual)` node helps you process ultra-long content. It decomposes long sequences into multiple overlapping context windows for sampling, rather than processing the entire sequence at once, thereby saving memory and enabling high-quality results generation.

**How it works:**
Like using multiple segmented samples to generate different segments of a video, and finally synthesizing a complete video\*\*

* Each window looks at a part (window processing)
* Windows overlap to ensure coherence (overlap areas)
* Finally, all parts are spliced into a complete image (result fusion)

```mermaid
%%{init: {"theme": "base", "themeVariables": {"primaryColor": "#444444", "primaryTextColor": "#ffffff", "primaryBorderColor": "#cccccc", "lineColor": "transparent", "sectionBkgColor": "#f8f9fa", "altSectionBkgColor": "#e9ecef", "gridColor": "transparent", "section0": "#555555", "section1": "#777777", "section2": "#E6F3FF", "section3": "#bbbbbb", "activeTaskBkgColor": "#444444", "activeTaskBorderColor": "#cccccc", "cScale0": "#555555", "cScale1": "#777777", "cScale2": "#E6F3FF", "critBkgColor": "#E6F3FF", "critBorderColor": "#B3D9FF", "xyColor": "#333333", "axisTextColor": "#333333", "gridLineColor": "transparent"}}}%%
gantt
    title Context Window Processing Example (length=21, overlap=5)
    dateFormat X
    axisFormat %s
    
    section Original Sequence
    Complete Content (length=81) : 0, 81
    
    section Window Processing
    Window 1 (0-20) : active, w1, 0, 21
    Window 2 (16-36) : active, w2, 16, 37
    Window 3 (32-52) : active, w3, 32, 53
    Window 4 (48-68) : active, w4, 48, 69
    Window 5 (64-81) : active, w5, 64, 81
    
    section Overlap Areas
    Overlap 1-2 : crit, o1, 16, 21
    Overlap 2-3 : crit, o2, 32, 37
    Overlap 3-4 : crit, o3, 48, 53
    Overlap 4-5 : crit, o4, 64, 69
```

## Input Parameters

| Parameter Name     | Function             | Simple Explanation                                                                         |
| ------------------ | -------------------- | ------------------------------------------------------------------------------------------ |
| `model`            | Model Input          | The model you want to process                                                              |
| `context_length`   | Window Size          | Length of each small window, the larger the range the more memory it occupies              |
| `context_overlap`  | Overlap Size         | Overlapping part between windows, more overlap means smoother effect but slower processing |
| `context_schedule` | Processing Method    | Choose how windows move, four modes available                                              |
| `context_stride`   | Movement Step        | How much the window moves each time, only useful in uniform mode                           |
| `closed_loop`      | Loop Mode            | Whether to connect the last window back to the first, only useful in loop mode             |
| `fuse_method`      | Merge Method         | Choose how overlapping parts merge, affects final effect                                   |
| `dim`              | Processing Dimension | Which direction to process, usually 0 (time direction)                                     |

## Scheduling Strategy Selection

| Scheduling Strategy   | Working Method                            |
| --------------------- | ----------------------------------------- |
| **STATIC\_STANDARD**  | Window positions are fixed                |
| **UNIFORM\_STANDARD** | Windows move uniformly                    |
| **UNIFORM\_LOOPED**   | Windows move in a loop                    |
| **BATCHED**           | Multiple windows processed simultaneously |

## Merge Methods

| Merge Method        | Weight Distribution Method                          | Characteristics                                         |
| ------------------- | --------------------------------------------------- | ------------------------------------------------------- |
| **PYRAMID**         | Middle part most important, decreasing toward edges | Most natural effect, recommended                        |
| **RELATIVE**        | Intelligent weight adjustment                       | Automatically adjusts based on position, natural effect |
| **FLAT**            | Average weight distribution                         | Simple and direct, suitable for uniform content         |
| **OVERLAP\_LINEAR** | Linear gradient                                     | Smoother transition                                     |

## Output Results

| Parameter Name | Description                                                   |
| -------------- | ------------------------------------------------------------- |
| `model`        | Processed model, can be directly connected to sampler for use |

## Typical Usage

```mermaid
graph LR
    A[Model Loader] --> B[Context Windows Manual]
    B --> C[KSampler]
    C --> D[Output]
    
    style A fill:#1976d2,color:#ffffff
    style B fill:#f57c00,color:#ffffff
    style C fill:#388e3c,color:#ffffff
    style D fill:#2e7d32,color:#ffffff
```

**Usage Steps**:

1. Load model
2. Connect to Context Windows Manual node
3. Connect to sampler to generate results