> ## 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.

# Astra 2 Workflow in ComfyUI

> How to run the Astra 2 creative video upscaling workflow in ComfyUI, locally or on Comfy Cloud

This guide shows how to run the Astra 2 workflow in ComfyUI. For what the model is and what it does best, see the [Astra 2 overview](/tutorials/partner-nodes/topaz/astra-2).

<Tip>
  To use the Partner Nodes, you need to ensure that you are logged in properly and using a permitted network environment. Please refer to the [Partner Nodes Overview](/tutorials/partner-nodes/overview) section of the documentation to understand the specific requirements for using the Partner Nodes.
</Tip>

<Tip>
  <Tabs>
    <Tab title="Local users">
      Make sure your ComfyUI is updated.

      * [Download ComfyUI](https://www.comfy.org/download)
      * [Update Guide](/installation/update_comfyui)

      Workflows in this guide can be found in the [Workflow Templates](/interface/features/template).
      If you can't find them in the template, your ComfyUI may be outdated.

      If nodes are missing when loading a workflow, possible reasons:

      1. You are not using the latest ComfyUI version (Nightly version)
      2. Some nodes failed to import at startup
    </Tab>

    <Tab title="Cloud users">
      * [Cloud](https://cloud.comfy.org) will update after ComfyUI stable release.

      So, if you find any core node missing in this document, it might be because the new core nodes have not yet been released in the latest stable version. Please wait for the next stable release.
    </Tab>
  </Tabs>
</Tip>

## In ComfyUI

Use **Topaz Video Enhance**. **Topaz Video Enhance (Legacy)** does not offer **Astra 2**. Set upscaler to **Astra 2**, resolution to **FullHD** or **4K**; input must be **MP4**.

Optional **Prompt**: max **450** frames (\~15 s @ 30 fps). Empty prompt: up to **9000** frames. Expand advanced controls for **Sharp** and **Realism** when needed.

## Example workflow

**Load Video** → **Topaz Video Enhance** → **Save Video**. After opening the template, pick **Astra 2** on the upscaler if another preset is selected.

<img src="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/templates/api_topaz_astra2-1.webp" alt="Astra 2 workflow preview" />

<CardGroup cols={2}>
  <Card title="Run on Comfy Cloud" icon="cloud" href="https://cloud.comfy.org/?template=api_topaz_astra2&utm_source=docs&utm_medium=referral&utm_campaign=astra-2">
    Open the workflow instantly on Comfy Cloud.
  </Card>

  <Card title="Download workflow" icon="download" href="https://github.com/Comfy-Org/workflow_templates/blob/main/templates/api_topaz_astra2.json">
    Download the workflow JSON for local ComfyUI.
  </Card>
</CardGroup>

<details className="prose" style={{marginBottom:"1rem"}}>
  <summary>Input materials</summary>

  Download this sample input video to try the workflow:

  <CardGroup cols={1}>
    <Card title="Input video" icon="video" href="https://raw.githubusercontent.com/Comfy-Org/workflow_templates/main/input/cyber_fight.mp4">
      Download sample input video
    </Card>
  </CardGroup>
</details>