> ## Documentation Index
> Fetch the complete documentation index at: https://docs.comfy.org/llms.txt
> Use this file to discover all available pages before exploring further.

# SeedVR2TemporalChunk - ComfyUI Built-in Node Documentation

> Complete documentation for the SeedVR2TemporalChunk node in ComfyUI. Learn its inputs, outputs, parameters and usage.

This node splits a SeedVR2 video latent into smaller overlapping temporal chunks that can be processed one at a time within available VRAM. The chunks are designed to be passed to both the Apply SeedVR2 Conditioning node and the sampler latent input, then later recombined using the Merge SeedVR2 Latents node.

## Inputs

| Parameter          | Description                                                                                           | Data Type | Required | Range                |
| ------------------ | ----------------------------------------------------------------------------------------------------- | --------- | -------- | -------------------- |
| `latent`           | The VAE-encoded SeedVR2 latent to split                                                               | LATENT    | Yes      | -                    |
| `temporal_overlap` | Latent frames shared between adjacent chunks and crossfaded at merge; 0 means no overlap (default: 0) | INT       | No       | 0 to 16384           |
| `chunking_mode`    | manual = use frames\_per\_chunk exactly; auto = predict the largest chunk that fits free VRAM         | COMBO     | Yes      | "auto"<br />"manual" |

When `chunking_mode` is set to "manual", the following parameter becomes available:

| Parameter          | Description                                                                    | Data Type | Required | Range              |
| ------------------ | ------------------------------------------------------------------------------ | --------- | -------- | ------------------ |
| `frames_per_chunk` | Pixel frames per temporal chunk (must be 4n+1: 1, 5, 9, 13, ...) (default: 21) | INT       | Yes      | 1 to 16384, step 4 |

**Notes on parameter constraints:**

* The input `latent` must be a 5-dimensional video latent with shape (B, C, T, H, W) and exactly 4 latent channels
* When using "manual" mode, `frames_per_chunk` must be a 4n+1 value (1, 5, 9, 13, 17, 21, ...)
* `temporal_overlap` is automatically capped to be less than the chunk size
* In "auto" mode, the node calculates the optimal chunk size based on available free VRAM

## Outputs

| Output Name        | Description                                                                           | Data Type |
| ------------------ | ------------------------------------------------------------------------------------- | --------- |
| `latents`          | The temporal chunks in sequence order                                                 | LATENT    |
| `temporal_overlap` | The effective latent-frame overlap between adjacent chunks, for Merge SeedVR2 Latents | INT       |

> This documentation was AI-generated. If you find any errors or have suggestions for improvement, please feel free to contribute! [Edit on GitHub](https://github.com/Comfy-Org/embedded-docs/blob/main/comfyui_embedded_docs/docs/SeedVR2TemporalChunk/en.md)

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