WanContextWindowsManual - ComfyUI Built-in Node Documentation

The WAN Context Windows (Manual) node lets you manually configure context windows for Wan-style video models. It applies these settings during sampling, giving you control over the window length, overlap, scheduling, and fusion method used while the model processes video. Context length and overlap are specified in real frames and are converted internally for the model’s 2D processing.

Inputs

Parameter	Description	Data Type	Required	Range
`model`	The model to apply context windows to during sampling.	MODEL	Yes	-
`context_length`	The length of the context window in real frames. Must be 4*n + 1 (default: 81).	INT	Yes	1 to 16384 (MAX_RESOLUTION), step 4
`context_overlap`	The overlap of the context window in real frames (default: 30).	INT	Yes	0 or higher
`context_schedule`	Step-dependent scheduling algorithm for context windows (default: “uniform_standard”).	COMBO	Yes	`"static_standard"` `"uniform_standard"` `"uniform_looped"` `"batched"`
`context_stride`	The stride of the context window; only applicable to uniform schedules (default: 1).	INT	Yes	1 or higher
`closed_loop`	Whether to close the context window loop; only applicable to looped schedules (default: False).	BOOLEAN	Yes	-
`fuse_method`	The method to use to fuse the context windows (default: “pyramid”).	COMBO	Yes	`"pyramid"` `"gaussian"` `"average"` `"overlap"`
`freenoise`	Whether to apply FreeNoise noise shuffling, improves window blending (default: True).	BOOLEAN	Yes	-
`retain_first_frame`	Retain the first I2V frame in every context window (may help retain initial reference) (default: False).	BOOLEAN	Yes	-
`split_conds_to_windows`	Whether to split multiple conditionings (created by ConditionCombine) to each window based on region index (default: False).	BOOLEAN	Yes	-

Note: context_stride only affects uniform schedules, and closed_loop only applies to looped schedules. The context length and overlap are specified in real frames and are automatically converted and clamped to minimum valid values during processing (context_length becomes ((length - 1) / 4) + 1, context_overlap becomes overlap / 4). context_length must follow the form 4*n + 1. retain_first_frame is intended for image-to-video use. split_conds_to_windows expects multiple conditionings created by the ConditionCombine node. The fuse_method parameter includes several options beyond just “pyramid”.

Outputs

Output Name	Description	Data Type
`model`	The model with the applied context window configuration.	MODEL

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